Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Reexamination Certificate
2006-05-09
2006-05-09
Warden, Jill (Department: 1743)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
C422S083000, C422S095000, C422S096000, C422S097000, C422S098000, C073S001010, C073S001020, C073S023200, C073S023230, C073S023310, C073S023320, C029S592000, C029S592100, C029S593000
Reexamination Certificate
active
07041256
ABSTRACT:
A poison resistant combustible gas sensing element, a method for its production and a method for determining poisoning of the element. The element includes an electric heating element, an inner layer coated on the electric heating element and containing a precious metal catalyst supported on a porous oxide, the precious metal catalyst catalyzing combustion of a combustible gas to be detected by the element, and an outer layer overlaying the first layer, and containing a catalytic compound capable of trapping gases which poison the precious metal catalyst, the catalytic compound being supported on a porous oxide.
REFERENCES:
patent: 4246228 (1981-01-01), Jones et al.
patent: 4313907 (1982-02-01), McNally
patent: 4464339 (1984-08-01), Wilkinson-Tough
patent: 5368713 (1994-11-01), Friese et al.
patent: 5423973 (1995-06-01), Friese et al.
patent: 5670115 (1997-09-01), Cheng et al.
patent: 6395161 (2002-05-01), Schneider et al.
patent: 6409899 (2002-06-01), Satou et al.
patent: 6548024 (2003-04-01), Doncaster et al.
Tomasovic Beth
Wang Annie Q.
Wang Chuan-Bao
Warburton P. Richard
Dennison Schultz Dougherty & MacDonald
Industrial Scientific Corporation
Sines Brian J.
Warden Jill
LandOfFree
Poison resistant combustible gas sensors and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Poison resistant combustible gas sensors and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Poison resistant combustible gas sensors and method for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3642689