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143results about "Investigating time/temperature history" patented technology
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Temperature Indicator for Warming Products
InactiveUS20090149925A1Thermometers using material expansion/contactionInvestigating time/temperature historyEngineeringColor changes
A warming product (e.g., mask, glove, sock, etc.) configured to provide heat to the body part of a user is provided. The warming product contains a thermochromic composition that undergoes a color change at a certain temperature. The color change may signal to a user that the warming product is hot, thus providing an indication that the desired treatment is still functioning. Likewise, the color change may signal that the product is cool, thus providing an indication that the treatment is complete.
Owner:KIMBERLY-CLARK WORLDWIDE INC
Non-invasive method of determining oxygen concentration in a sealed package
InactiveUS20070212789A1Improve accuracyImprove temperature measurement accuracyChemiluminescene/bioluminescenceInvestigating time/temperature historyExcited stateLuminous intensity
The invention is a method of measuring oxygen concentration in a package having an oxygen sensitive product disposed therein. The method includes exposing a luminescent compound that is disposed in an interior of the package to light having a wavelength that is absorbed by the luminescent compound so that the luminescent compound is promoted into an excited state. When the exposure of the light is terminated, the excited luminescent compound emits light that is detectable by a detector positioned outside of the package. The intensity of the emitted light is inversely proportional to the oxygen concentration and is used in conjunction with mathematical function that describes the luminescent intensity of the luminescent compound as a function of oxygen concentration and temperature to calculate the oxygen concentration. The method may be used to verify and track the oxygen concentration of a package as it moves through a distribution system.
Owner:CRYOVAC ILLC
Method and apparatus for measuring oxygen concentration
InactiveUS7569395B2Lower Level RequirementsHigh sensitivityChemiluminescene/bioluminescenceWithdrawing sample devicesOxygenNon invasive
An apparatus and non-invasive method of measuring oxygen by exciting a luminescent compound disposed in a container and then measuring the intensity of the light emitted by the excited luminescent compound as it relaxes to the ground state. A plot of emission intensity as a function of time results in an exponential decay curve the area of which is inversely proportional to the oxygen concentration. The oxygen concentration can be determined over a wide temperature range by measuring the temperature of the container and the emission intensity and then applying the following equation:[O2]=(ATa(T)2+BTa(T)+CTa)(tau)2+(ATb(T)2+BTb(T)+CTb)(tau)+(ATc(T)2+BTc(T)+CTc)T is the measured temperature;tau is the area of the exponential decay curve; andATa, BTa, CTa, ATb, BTb, CTb, ATc, BTc, and CTc are coefficients that are specific to the luminescent compound being examined.
Owner:CRYOVAC ILLC
Plural intrinsic expiration initiation application indicators
InactiveUS20050037498A1Investigating time/temperature historyThermometerIntrinsicsBiological activation
A device and method for monitoring the expiration of goods includes a substrate, a coating of polydiacetylene, said coating having properties of (1) changing from a first color irreversibly to a second color immediately upon being subjected to a specified temperature and (2), upon activation upon contact by an activating agent, changing from said first color to said second color at a temperature lower than said specified temperature after a time delay of at least one hour and an activating agent on a portion but not all of said coating.
Owner:CMC GRP INC
Ingestibles possessing intrinsic color change
Methods and compositions are provided comprising ingestibles and a thermochromic composition which is informative as to the temperature history of the ingestible, either prior or contemporaneous with use. Various solid or liquid ingestible compositions are provided for determining storage temperature, temperature of the user, temperature of the ingestible, particularly comestibles, and the like. Of particular interest are polydiacetylene polymers which may be formulated to provide compositions having transition temperature over a broad temperature range.
Owner:SEGAN INDS
Plural intrinsic expiration initiation application indicators
A device and method for monitoring the expiration of goods includes a substrate, a coating of polydiacetylene, said coating having properties of (1) changing from a first color irreversibly to a second color immediately upon being subjected to a specified temperature and (2), upon activation upon contact by an activating agent, changing from said first color to said second color at a temperature lower than said specified temperature after a time delay of at least one hour and an activating agent on a portion but not all of said coating.
Owner:CMC GRP INC
Thermochromic polymers for rapid visual assessment of temperature
A thermochromic polymer-based temperature indicator composition which comprises a polythiophene and a carrier medium. The composition is characterized in that the polythiophene is present in the medium in an amount of about 0.05 to about 5.0% by weight based on the total weight of the composition. The structure of the compound is designed such that when the composition is placed in a heat-exchange relationship with an article, the composition will exhibit a color change when a design temperature or a temperature beyond the design temperature is reached in the article.
Owner:BOARD OF GOVERNORS FOR HIGHER EDUCATION STATE OF RHODE ISLAND & PROVIDENCE PLANTATIONS
Method of marketing maturing consumable products and products useful therein
InactiveUS20060247967A1Avoid difficult choicesQuickly easily determineInvestigating time/temperature historyCash registersPEARDiffusion
A marketing process for a maturing consumable product, especially one lacking a clear visual indication of maturity or ripeness, e.g. certain pears, other fruit, some cheeses, aged beef, sausages and wine, employs a visual indicator responsive to cumulative exposure to temperature, humidity, atmospheric conditions and / or other environmental conditions. The maturity indicator responds by changing its visual appearance, or providing another signal, after elapse of a condition exposure correlated with the conditions anticipated to be required for a desired maturity stage of the maturing product. Optionally the indicator can be incorporated in a label adhered to the maturing product. The indicator can employ various indicator technologies including an active chemical agent, e.g. a polyacetylenic agent, adhesive diffusion technology, an oxidative reaction, a silver salt redox reaction, an enzyme based reaction or an electronic condition exposure indicator. The visual indicator can enable a customer readily to determine the ripeness or maturity of a product without having to handle it or otherwise physically inspect it.
Owner:TEMPTIME CORP
Method and apparatus for measuring oxygen concentration
InactiveUS20070212792A1Improve accuracyImprove temperature measurement accuracyWithdrawing sample devicesChemiluminescene/bioluminescenceOxygenNon invasive
An apparatus and non-invasive method of measuring oxygen by exciting a luminescent compound disposed in a container and then measuring the intensity of the light emitted by the excited luminescent compound as it relaxes to the ground state. A plot of emission intensity as a function of time results in an exponential decay curve the area of which is inversely proportional to the oxygen concentration. The oxygen concentration can be determined over a wide temperature range by measuring the temperature of the container and the emission intensity and then applying the following equation: [O2]=(ATa(T)2+BTa(T)+CTa)(tau)2+(ATb(T)2+BTb(T)+CTb)(tau)+(ATc(T)2+BTc(T)+CTc) T is the measured temperature; tau is the area of the exponential decay curve; and ATa, BTa, CTa, ATb, BTb, CTb, ATc, BTc, and CTc are coefficients that are specific to the luminescent compound being examined.
Owner:CRYOVAC INC
A monitoring system based on etching of metals
ActiveCN102077060AThermometers using mean/integrated valuesInvestigating time/temperature historyPolyesterMicrowave
Compositions, devices and processes related to etching of a very thin layer or fine particles of a metal are disclosed for monitoring a variety of parameters, such as time, temperature, time-temperature, thawing, freezing, microwave, humidity, ionizing radiation, sterilization and chemicals. These devices have capabilities of producing a long and sharp induction pepod of an irreversible visual change The devices are composed of an indicator comppsing a very thin layer of a metal (e g, polyester film having an extremely thin, e g, about one hundred Angstroms layer of aluminum) and an activator, e g, a reactant, such as water, water vapor, an acid, a base, oxidizing agent or their precursors, which is capable of reacting with the said indicator. The indicator retains its opacity and metallic luster, e g, silvery white, mirror like finish of aluminum layer for a long time. The activator destroys the indicator layer including the naturally formed oxide layer.
Owner:JP LAB INC
Full history time-temperature indicator system
InactiveUS7290925B1Avoid contactThermometer detailsThermometers using mean/integrated valuesChemical reactionDependent manner
A full-history time-temperature indicator system which is capable of exhibiting a time-temperature dependent and visually detectable chemical reaction, useful for monitoring the time and temperature exposure of food products. The system comprises an immobilized reactant, such as Fe3+, and a mobile reactant, such as Fe(CN)64-, initially contained in separate compartments, and separated by a sealing. The system is activated by removing a sealing between the compartments whereby the mobile reactant in a time-temperature dependent manner is brought into contact with the immobilized reactant resulting in a visually detectable reaction signal.
Owner:TIMETEMP
Patterned chemical sensor having inert occluding layer
ActiveUS20110094514A1Easily identifiableSharp contrastBreathing filtersBreathing masksColor changesOrganic vapor
A sensor 40 that detects a chemical such as an organic vapor. The sensor 40 includes a film that has a film body 58 that includes a detection layer 48 and that is responsive to the presence of a chemical by providing a color change. The film also includes an occluding layer 54 that has a first major surface 59 and that is bound to the film body 58 but is inert to the detection layer 48 to preclude the occluding layer 54 and the chemical from causing a color change in the film body 58 in an area 42 normal to the first major surface 59 of the occluding layer 54. A sensor having this construction can provide a distinctly visible image on the sensor, which may be helpful in evaluating the remaining life of a filter cartridge.
Owner:3M INNOVATIVE PROPERTIES CO
Reactivity control in substituted diacetylenic monomer shelf life monitoring systems
InactiveUS6924148B2Accurately controlled extension and shiftingEasy to controlInvestigating time/temperature historyThermometerTime to effectMonitoring system
A product shelf life monitoring system comprising an active substituted diacetylenic monomer component indicator composition is responsive to an integral of varying temperature over time to effect a solid state polymerization in the active monomer which results in a visible change in color density or the like at a rate designed to closely approximate the degradation, or shelf life, of an associated foodstuff or medicament product. The reactivity of the monomer component upon which the time-temperature integral of the indicator composition, and thus the represented shelf life, primarily depends may be readily varied by refluxing a solution of the monomer in a selected solvent for a predetermined time prior to recrystallization of the monomer for incorporation into the indicator composition.
Owner:TEMPTIME CORP
Apparatus with timed color change indication
ActiveUS20130269592A1Prevent premature color changeMeasured value indication by color changeIncision instrumentsChange colorChange colour
An apparatus with time controlled color change indication comprises an apparatus includes a disposable, limited or restricted use product and an oxygen sensing color changeable dye disposed on a portion of the apparatus, the dye being translucent or having a first color upon application and for a defined time thereafter and the dye changing color after exposure to oxygen for the defined time. For example, a packaging for containing a product for human consumption has a portion with a color changeable dye disposed thereon. The dye changes color after being exposed to oxygen for a controlled and predetermined period of time indicating that the product for human consumption should no longer be consume or has decreased in freshness, quality of taste or potency.
Owner:THERMOGRAPHIC MEASUREMENTS
Thermochromic polymers for rapid visual assessment of temperature
InactiveUS20020149003A1Measuring points markingMeasurement apparatus componentsVisual assessmentColor changes
A thermochromic polymer-based temperature indicator composition which comprises a polythiophene and a carrier medium. The composition is characterized in that the polythiophene is present in the medium in an amount of about 0.05 to about 5.0% by weight based on the total weight of the composition. The structure of the compound is designed such that when the composition is placed in a heat-exchange relationship with an article, the composition will exhibit a color change when a design temperature or a temperature beyond the design temperature is reached in the article.
Owner:BOARD OF GOVERNORS FOR HIGHER EDUCATION STATE OF RHODE ISLAND & PROVIDENCE PLANTATIONS
Robust, ultraviolet-protected ambient condition history indicator and method of making same
InactiveUS20130239874A1Simple configurationOptimizationInvestigating time/temperature historyLaminationAdhesiveUltraviolet radiation
An optically readable ambient condition history indicator can have a substrate, an indicator agent on the substrate surface, and a transparent layer overlying the indicator agent. The indicator agent can be capable of changing appearance in response to exposure to an ambient condition and the transparent layer can be subject to exposure to environmental ultraviolet radiation. The indicator can also include a radiation-filtering adhesive layer overlying the indicator agent to secure the transparent layer to the indicator agent, which adhesive layer can include an adhesive and an ultraviolet radiation filter and can contact both the transparent layer and the indicator agent-bearing substrate. The radiation-filtering adhesive layer can protect the indicator agent from ultraviolet radiation transmitted through the transparent layer and provide a simple, robust construction that is easy to manufacture and resists delamination. The adhesive itself is also protected from ultraviolet radiation. A simplified manufacturing method is also disclosed.
Owner:TEMPTIME CORP
Biological specimen collection and storage devices
InactiveUS20100279397A1Increase the number ofIncrease percentageStampsBioreactor/fermenter combinationsEngineeringBiological activation
Owner:BECTON DICKINSON & CO
Food and beverage quality sensor
InactiveUS20050153052A1Strong specificityRule out the possibilityMicrobiological testing/measurementInvestigating time/temperature historyEngineeringIngested food
A method and device for sensing food quality includes a detection material having an inherent sensitivity to a contaminant and changing a property in response thereto. The detection material is subjected to a modulating agent to alter the sensitivity of the detection material, so that exposure of the detection material to the contaminant causes the property to change in response to a level corresponding to the altered detection sensitivity.
Owner:CHARLES STARK DRAPER LABORATORY
Product shelf life monitoring systems
ActiveUS7682830B2Low costIncrease diversityThermometer detailsInvestigating time/temperature historyTemporal changeTime to effect
A product shelf life monitoring system comprises a label substrate bearing upon a limited portion of its area an active indicator composition responsive to varying temperature over time to effect a visible change in color density or the like. The susceptibility of the indicator composition to similarly respond to incidence of vagrant ultraviolet light is ameliorated by application of an area of ultraviolet light absorbent composition in register above the indicator composition and extending at most only slightly beyond the periphery of the area of indicator composition. In this manner, the remaining area of the label is preserved for ultraviolet light responsive implementations, and only a minimal, economical amount of ultraviolet light absorbent composition is expended.
Owner:TEMPTIME CORP
Irreversible Coolness Indicator
InactiveUS20100020846A1Color lossThermometer detailsInvestigating time/temperature historyOptical propertyLiquid medium
The invention provides a temperature-threshold indicator device 10 comprising a sealed housing 12 having at least one surface 14 which is transparent and containing a suspension of inorganic nanoparticles 18 suspended in a liquid medium wherein the suspension undergoes an irreversible detectible change in optical characteristics upon freezing of the liquid medium due to aggregation of the nanoparticles, and wherein the device is provided a with means for association thereof with a product whereby the temperature-threshold indicator device 10 serves to determine whether the product has been exposed to an environment of predetermined coldness.
Owner:KAGAN MICHAEL +2
Crystallized diacetylenic indicator compounds and methods of preparing the compounds
ActiveUS20090131718A1Improve abilitiesExpand the scope ofUrea derivatives preparationThermometers using mean/integrated valuesAcetylene compoundsCrystallization
Crystallized diacetylenic compounds having certain crystallographic and other characteristics; diacetylenic compounds and mixtures crystallized from diacetylenic solutions; methods of preparing and identifying solvent systems for dissolving diacetylenic compounds; diacetylenic solutions; methods of recrystallizing diacetylenic compounds; crystals of 2,4-hexadiyn-1,6-bis(alkylurea) compounds; and ambient condition indicators and time-temperature condition indicators comprising crystallized diacetylenic compounds.
Owner:TEMPTIME CORP
Filter cartridge having cone of visibility for end-of-service-life-indicator (ESLI)
A filter cartridge 12 that includes a filter material 42, an end-of-service-life-indicator 40, a cartridge housing 22, and a window 38. The filter material 42 and ESLI 40 are disposed in the housing, and the ESLI 40 may be viewed through the window 38. The window 38 is configured such that the ESLI 40 can only be seen within a cone defined by an angle θ of 20 to 70 degrees. The limited viewing range precludes reader error when examining the ESLI for color change.
Owner:3M INNOVATIVE PROPERTIES CO
Time Passage Indicator
ActiveUS20160011157A1The right amountAvoid spendingMaterial analysis by observing effect on chemical indicatorInvestigating time/temperature historyTemporal changeCarboxylic acid
There is described an indicator device for indicating the passage of time, the indicator device comprising an indicator section and a barrier section adjacent thereto, said indicator section comprising: an indicator material; a substrate material; and a first adhesive layer; the indicator material and the substrate material being in the form of one or more layers; the indicator material displaying different visible properties in response to the presence or absence of a chemical agent and / or the concentration thereof; the barrier section comprising a removable barrier layer, the removable barrier layer being substantially impermeable to the chemical agent; wherein on removal of the removable barrier layer, the concentration of the chemical agent in the indicator section changes over time, effecting a visible change. The device may be used to detect the presence / absence of oxygen, water, carbon dioxide, an amine, ammonia, and / or carboxylic acids or to indicate the passage of time.
Owner:INSIGNIA TECH LTD
Co-crystallizable diacetylenic monomer compositions, crystal phases and mixtures, and related methods
ActiveUS20110086995A1Thermometer detailsOrganic chemistryMonomer compositionNMR - Nuclear magnetic resonance
Solid polymerizable diacetylenic monomer compositions, including compositions co-crystallized from a diversity of solvent systems under diverse cooling conditions, can exhibit diffraction patterns associated with the color development reactivities of the compositions. High reactivity compositions are disclosed and high reactivity and low reactivity phases can be identified. A low angle powder X-ray diffraction peak can indicate the presence of one or more crystal phases in a composition. A fingerprint region can exhibit fingerprint patterns of diffraction peaks associated with different reactivities. Information about polymerization of the diacetylenic monomers is disclosed using 13C nuclear magnetic resonance (“NMR”) characterization. Diacetylenic monomer compositions useful in ambient condition indicators, for example time-temperature indicators are disclosed.
Owner:TEMPTIME CORP
Sensor
InactiveUS20050078557A1Easy to useMechanical clocksMaterial analysis by observing effect on chemical indicatorEngineeringRelative humidity
The present invention relates to sensor for indicating a cumulative time period of presence of an ambient relative humidity, there the sensor comprising an indicator and a carrier and the indicator being located at one or more limited portions of the carrier. The carrier allowing migrating of the indicator within the carrier and the indicator causing an extension thereof by migrating from the one or more limited portions when the ambient relative humidity level exceeds a predetermined level. Further, the extension by migrating being detectable by a user and the cumulative time period being related to the extension by migrating and the characteristics of the indicator and the carrier. The present invention also relates to a method for reading the cumulative time period of presence of an ambient relative humidity indicated by a sensor and a method for providing a sensor for indicating a cumulative time period of presence of an ambient relative humidity by providing a carrier with an indicator.
Owner:ANDERSEN ALF
Printed TTI indicators
InactiveUS20060130734A1Rapid and clear indicationEasy to manufactureThermometer detailsThermometers using mean/integrated valuesPack materialMechanical engineering
The present invention relates to time-temperature integrating indicators, also known as TTI indicators, which are easily printable on substrates, such as packaging materials, and to a method for the manufacture of packaging materials comprising printed TTI indicators. The printed TTI indicator is selectively activated at the time of packaging of a perishable product or alternatively at the time of opening of the package of a perishable product.
Owner:AVANTONE OY
Temperature sensing material
InactiveUS20060286211A1Temperature measurement in household appliancesInvestigating time/temperature historyFood safetyEngineering
Food safety can be enhanced by applying a temperature indicating element to packaging for a food product. The element can be applied before or after the food product has been inserted into the packaging. The color of the element indicates if the temperature of the packaged food product has rise to an unsafe level, and / or, has stayed at or above that level for a predetermined time interval.
Owner:HONEYWELL INT INC
Visual indicator status recognition
ActiveUS20140023264A1Investigating time/temperature historyCharacter and pattern recognitionComputer scienceVisual perception
A system and technique for visual indicator status recognition includes an imaging system configured to capture a first optical data of an indicator, the imaging system configured to verify indicator code indicia is derivable from the first optical data. Responsive to verifying that the indicator code indicia is derivable from the first optical data, the imaging system is configured to capture a second optical data of the indicator. The system and technique also includes a detection module executable by a processing unit to analyze the second optical data and derive status information of the indicator.
Owner:SHOCKWATCH
Printed TTI indicators
InactiveUS7430982B2Rapid and clear indicationEasy to manufactureThermometer detailsThermometers using mean/integrated valuesEngineeringPack material
Owner:AVANTONE OY
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