The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2000
Filed:
Dec. 09, 1997
Applicant:
Inventors:
Peter McGeehin, Compton, GB;
Patrick Timothy Moseley, Chilton, GB;
David Edward Williams, Abingdon, GB;
Geoffrey Stephen Henshaw, London, GB;
Darryl Hirst Dawson, London, GB;
Laura Jane Gellman, Harrow, GB;
Assignee:
Capteur Sensors & Analysers, Ltd., Didcot, GB;
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436121 ; 436122 ; 436127 ; 436128 ; 436131 ; 436132 ; 436133 ; 436134 ; 436137 ; 436139 ; 436140 ; 436141 ; 436142 ; 436151 ; 73 3106 ; 422 90 ; 422 98 ; 422 95 ;
Abstract
The selectivity of response of resistive gas sensors to specific gases or vapors is improved by the selection of specified gas-sensitive materials which are not previously known for the applications described, which include detection of hydrocarbons in the presence of CO, H.sub.2 S, SO.sub.2, chlorine, NO.sub.2, CO.sub.2 (especially in low concentrations), CFC's, ammonia, free oxygen by determination of partial pressures, and numerous organic gases and vapors.