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Class Information
Number: 252/963
Name: Compositions > Humidity or moisture indicators
Description: Art collection relating to compositions indicating water.










Patents under this class:

Patent Number Title Of Patent Date Issued
6933421 Methods of making disposable products having humidity activated materials with shape-memory Aug. 23, 2005
6376250 Composition and probe for detection of water Apr. 23, 2002
5608374 Humidity sensor and a method of producing the humidity sensor Mar. 4, 1997
5421192 Leak detection in heating, ventilating and air conditioning systems using an environmentally safe material Jun. 6, 1995
5357782 Leak detection in heating, ventilating and air conditioning systems using an environmentally safe material Oct. 25, 1994
5348761 Use of a swellable plastic and process for making a resistive moisture sensor Sep. 20, 1994
5112768 Real-time passive detection of humidity using vanillin May. 12, 1992
5082588 Optical and capacitance type, phase transition, humidity-responsive devices Jan. 21, 1992
4990284 Moisture indicating ink and package having same Feb. 5, 1991
4975249 Optical and capacitance type, phase transition, humidity-responsive devices Dec. 4, 1990
4793175 Humidity sensor, sensor material, method of manufacture and humidity sensing system, especially for automotive use Dec. 27, 1988
4643122 Diffusion controlled security tags Feb. 17, 1987
4550676 Elapsed time indicator Nov. 5, 1985
4391859 Process and a composition for the insulation of surfaces, and product hereby obtained Jul. 5, 1983
4373391 Relative humidity sensitive material Feb. 15, 1983
4179397 Indicator ink Dec. 18, 1979
4166891 Visual-type hygrometer Sep. 4, 1979
4041437 Humidity sensor Aug. 9, 1977
3972826 Fuel moisture analog Aug. 3, 1976











 
 
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