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:
Aug. 14, 1979
Filed:
Aug. 29, 1977
Applicant:
Inventor:
James S Johnston, Bognor Regis, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
422 96 ; 2323 / ; 340633 ; 422 97 ;
Abstract
A catalytic gas detector is formed as a sandwich and comprises two flat printed film resistance thermometer sensors back-to-back with a layer of thermally insulating material between them. A coating of a suitable catalytic substance covers an exposed flat face of one of the two sensors.