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Chemical sensing apparatus and methods

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G08B-017/10
출원번호 US-0741573 (1991-08-07)
발명자 / 주소
  • Stetter Joseph R. (Naperville IL) Maclay G. Jordan (Maywood IL)
출원인 / 주소
  • Transducer Research, Inc. (Aurora IL 02)
인용정보 피인용 횟수 : 77  인용 특허 : 0

초록

Apparatus for the detection of a vapor of a selected chemical substance includes a sensor whose impedance changes upon exposure to such a vapor. The sensor comprises a polymer whose physical structure is altered by the vapor, e.g., through expansion or disintegration, and electrically conductive ele

대표청구항

Apparatus for indicating the end of service life of a filter cartridge for removing vapors of a chemical species from respired air, including a sensor that comprises: a polymer whose physical structure changes upon exposure to said chemical species, discrete electrically conductive elements at least

이 특허를 인용한 특허 (77)

  1. Sunshine,Steven A.; Munoz,Beth C., Aligned particle based sensor elements.
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  17. Frankel, Kevin A.; Zelinsky, Maria L., End of service life indicating systems for layered filter cartridges.
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  19. Herman, Peter K.; Zoch, Roger L.; Schwartz, Scott W.; Adams, Mark P., Engine air filter replacement indication system.
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  25. Potter, Michael D., High temperature embedded charge devices and methods thereof.
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  32. Motouji, Satoshi; Hirao, Iichi; Hayashi, Teruyuki; Saito, Misako, Method for deciding on the timing of replacing a chemical filter, filter life detection sensor, chemical filter unit, and semiconductor manufacturing apparatus.
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  35. Potter,Michael D., Method for non-damaging charge injection and system thereof.
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  37. Lewis,Nathan S.; Severin,Erik, Methods for remote characterization of an odor.
  38. Wagner, Mark, Methods of making an electrochemical gas sensor.
  39. Potter,Michael D., Micro fluidic valves, agitators, and pumps and methods thereof.
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  41. Potter,Michael D., Motion based, electrostatic power source and methods thereof.
  42. Freund, Michael S.; Lewis, Nathan S.; Briglin, Shawn M., Nanoparticle-based sensors for detecting analytes in fluids.
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  71. Verdegan, Barry M.; Thomas, Chad M.; Herman, Peter K., System for monitoring and indicating filter life.
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  75. Lewis, Nathan S.; Severin, Erik J.; Freund, Michael; Matzger, Adam J., Use of an array of polymeric sensors of varying thickness for detecting analytes in fluids.
  76. Lewis,Nathan S.; Severin,Erik J.; Freund,Michael; Matzger,Adam J., Use of an array of polymeric sensors of varying thickness for detecting analytes in fluids.
  77. Lewis,Nathan S.; Freund,Michael S.; Briglin,Shawn M., Use of spatiotemporal response behavior in sensor arrays to detect analytes in fluids.
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