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:
Dec. 03, 2002
Filed:
Oct. 13, 2000
Applicant:
Inventor:
Edward F. McFadden, Charlottesville, VA (US);
Assignee:
Bacharach, Inc., New Kensington, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 1/710 ; G01R 2/728 ; G01R 2/708 ;
U.S. Cl.
CPC ...
G01R 1/710 ; G01R 2/728 ; G01R 2/708 ;
Abstract
A circuit capable of detecting natural gas at a wide range of concentrations is disclosed. The gas detection circuit includes a catalytic Wheatstone bridge circuit and an analyzing Wheatstone bridge circuit. A circuit for detecting natural gas, which includes placing a device containing the circuit described above in an area in which the air has a potential of containing natural gas, and monitoring the output signal for indications of the presence of natural gas is also disclosed.