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:
Sep. 03, 2002
Filed:
May. 03, 2001
Applicant:
Inventor:
Cody Zane Slater, Calgary, CA;
Assignee:
BW Technologies Limited, Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 3/3497 ; F01N 3/10 ;
U.S. Cl.
CPC ...
G01N 3/3497 ; F01N 3/10 ;
Abstract
A method for detecting combustible gases or vapours using a combustible gas sensor or pellistors includes the steps of keeping the combustible gas sensor or the pellistor beads inactive until an oxygen sensor indicates a variation from a reference level of oxygen, such variation representing the potential presence of combustible gases or vapours.