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619results about How to "Easy to deposit" patented technology

Method for manufacturing precision electroplated solder bumps

A method for fabrication of a solder bump, comprising applying preferably an insulating film, followed by applying a multilayer underbump metallization, a layer of a photoresist, and a thin layer of titanium on a substrate containing, preferably, III-V semiconductor circuits. The multilayer UBM pad, preferably comprising a 0.02 to 0.05 micrometer thick layer of titanium, a 0.5 to 1.0 micrometer thick layer of nickel and a 0.1 to 0.2 thick layer of gold. The protective film with the thickness of preferably 0.5 to 40 micrometer comprises a photoresist. After the solder has been electroplated, the protective film is removed, preferably by dry etching or with a solvent. The titanium film serves a dual function of being a membrane for electroplating of the solder and of being a non-wettable dam for wetting back of the plated solder. The titanium film with the thickness of 200 to 1,000 Angstroms is preferably deposited by evaporation. After the solder has been electroplated, much of the titanium film is removed, preferably by wet etching or dry etching, leaving only a band of titanium that surrounds the disk of solder. A multilayer solder bump structure for III-V semiconductor circuits manufactured using this method, comprising, preferably, an insulating film, a multilayer underbump metallization layer, and remnants of the thin titanium film.
Owner:HRL LAB

Liquid nitrogen container and cryogenic vial pick-and-place device

The invention discloses a liquid nitrogen container and a cryogenic vial pick-and-place device. The liquid nitrogen container comprises a container body, and further comprises a rotary disc, a cryopreservation frame, a central shaft and a driving assembly, wherein an opening is formed in the container body; the rotary disc is arranged in the container body; the cryopreservation frame is supported by the rotary disc and comprises a plurality of layers of placement faces; the included angle between each placement face layer and the rotary disc is 40-60 degrees; the central shaft is perpendicularly arranged with and fixedly connected with the rotary disc; the driving assembly is electrically connected with the central shaft and used for driving the central shaft to rotate; and the central shaft is used for driving the cryopreservation frame to rotate through the rotary disc to reach the opening of the container body. By adoption of the liquid nitrogen container and the cryogenic vial pick-and-place device, the workload of operating personnel is reduced, the error rate of manual picking of cryogenic vials is lowered, and the potential safety hazard for the operating personnel is avoided. The liquid nitrogen container and the cryogenic vial pick-and-place device are particularly suitable for the work of picking cryogenic vials in a high-capacity biological sample bank, and meet the technical requirement for storage in the high-capacity biological sample bank.
Owner:SHANGHAI ORIGINCELL BIOLOGICAL CRYO EQUIP CO LTD

System for secure collection and disposal of large volumes of documents

The invention disclosed herein provides an apparatus and method for securely collecting, storing, and disposing of documents by attaching a reusable, secure, lockable closure to a cardboard receptacle box. The lockable closure has a slot in the top to allow documents to be deposited in the box. Two opposing side surfaces of the lockable closure have an interior lip that engages the box flap in such a way as to prevent the unwanted removal of the closure. The closure can be secured to the box with a locking seal such as a cable tie through locking holes located on the top surface and two opposing sides of the lockable closure as well as the box flaps and box sides. A hole allows removal of the lockable closure by exerting pressure on the flap. The disclosed method provides the steps of providing a single lockable closure, a plurality of receptacle boxes, and a number of locking seals capable of fitting through the holes. The single, reusable, locking closure is placed on a receptacle box, which is sealed, documents are placed into the box through the slot. When the box is full, the locking seals are removed and the box is closed secured with its internal flaps and shipped for destruction or recycling. The same lockable closure is then placed on a different box bottom to repeat the process.
Owner:CHADIMA MIKE

System for secure collection and disposal of large volumes of documents

The invention disclosed herein provides an apparatus and method for securely collecting, storing, and disposing of documents by attaching a reusable, secure, lockable closure to a cardboard receptacle box. The lockable closure has a slot in the top to allow documents to be deposited in the box. Two opposing side surfaces of the lockable closure have an interior lip that engages the box flap in such a way as to prevent the unwanted removal of the closure. The closure can be secured to the box with a locking seal such as a cable tie through locking holes located on the top surface and two opposing sides of the lockable closure as well as the box flaps and box sides. A hole allows removal of the lockable closure by exerting pressure on the flap. The disclosed method provides the steps of providing a single lockable closure, a plurality of receptacle boxes, and a number of locking seals capable of fitting through the holes. The single, reusable, locking closure is placed on a receptacle box, which is sealed, documents are placed into the box through the slot. When the box is full, the locking seals are removed and the box is closed secured with its internal flaps and shipped for destruction or recycling. The same lockable closure is then placed on a different box bottom to repeat the process.
Owner:CHADIMA MIKE

Corrugated fin heat exchanger and method of manufacture

A heat exchanger includes a corrugated metal sheet comprising a first side having a plurality of first troughs alternating with a plurality of first peaks, and a second side having a plurality of second troughs alternating with a plurality of second peaks, each trough being formed by a pair of walls, each wall separating the first side from the second side and extending from a first peak to a second peak, the troughs and peaks extending in parallel and defining a longitudinal direction. Each first peak is formed with at least one depression, the depressions in respective peaks being aligned to form at least one tube-receiving channel extending transversely to the longitudinal direction. Each depression has a contact surface formed in the first side and extending laterally over each adjacent first trough. A tube section is received in each tube-receiving channel in substantially conforming contact with the contact surfaces. The heat exchanger is manufactured using first and second fixtures having first and second sets of parallel ribs which are received in respective second and first troughs of the corrugated sheet. The first peaks are formed downward using a mandrel received through windows interrupting the second ribs, the depressions being formed in corresponding notches in the first ribs.
Owner:AAVID THERMALLOY LLV
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