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331results about How to "Avoid excessive changes" patented technology

Pressure-sensitive adhesive and retardation layer-attached polarizing plate, method for manufacturing thereof, optical film, and image display

A pressure-sensitive adhesive and retardation layer-attached polarizing plate (4) of the invention comprises a retardation layer-attached polarizing plate (3) comprising a polarizing plate (2) that comprises an iodine-based polarizer (1) and a transparent protective film laminated on both sides of the polarizer (1); and a retardation layer provided on at least one of the transparent protective films; and an acrylic pressure-sensitive adhesive layer laminated on the retardation layer side of the retardation layer-attached polarizing plate (3), wherein the iodine-based polarizer (1) has a ratio (K / I), which is the content (% by weight) of potassium (K) to the content (% by weight) of iodine (I) in the polarizer, of 0.200 to 0.235, the polarizing plate (2) comprises the iodine-based polarizer (1) and the transparent protective film laminated with an adhesive layer formed from a water-soluble adhesive containing an acetoacetyl group-containing polyvinyl alcohol resin and a crosslinking agent, the retardation layer-attached polarizing plate (3) has a measured dimensional shrinkage of 0.5% or less in the direction of its absorption axis after it is allowed to stand at 80° C. for 24 hours, the pressure-sensitive adhesive and retardation layer-attached polarizing plate (4) has a single-piece transmittance of 41.0% to 43.2%. The pressure-sensitive adhesive and retardation layer-attached polarizing plate can resist a change in optical properties and keep visibility high, even under heated or humidified conditions.
Owner:NITTO DENKO CORP

Remote level gauge adapted for liquid fuel tank

An apparatus for sensing a fluid level that, in one embodiment, is adapted to fit the threads of a fill pipe or vent cap in a storage tank. A first (or upper) part of the assembly is secured in an upper portion of the tank (such as is provided at a threaded vent opening) and includes components to permit sensing pressure at a first location. A second (lower) portion of the assembly sensing pressure at a second location is disposed in a weighted casing. The second portion is coupled to the first portion through a cable that carries a section of tubing. Circuitry disposed in the second portion receives a pressure indication from the upper portion through the tubing, and detects a fluid pressure at both the upper and lower portion of the tank. The difference between the two pressures is indicative of fluid level. This level is then sent back up to the electronics assembly in the first (upper) portion. The electronics assembly can contain a microprocessor and a radio transmitter, such as a cellular or other wireless data network transmitter, to report the fluid level to a remote station such as operated by a fuel supplier. In more particular aspects, the reports of fluid levels can be delayed until periods of significantly less change in fluid level or an indication that use of the tank as stopped, to save battery life.
Owner:KRITLOW MARK +1
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