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.

Date of Patent:
Jul. 08, 2014

Filed:

Jan. 03, 2012
Applicants:

Lei Xiao, London, GB;

Terence Nicholas Moran, Portsmouth, GB;

Inventors:

Lei Xiao, London, GB;

Terence Nicholas Moran, Portsmouth, GB;

Assignee:

Honeywell International Inc., Morristown, NJ (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/404 (2006.01); G01N 27/413 (2006.01);
U.S. Cl.
CPC ...
Abstract

A gas sensor in one form comprises a housing including a base and a top defining an interior space. The housing includes a gas entry hole and first and second electrical terminals. First and second electrodes in the housing interior space each comprise a membrane having a layer of platinum black catalyst on one side. The second electrode includes a lower amount of platinum black catalyst than the first electrode. A separator is placed between the first and second electrodes. Current collectors electrically connect the first and second electrodes to the respective first and second electrical terminals whereby sensor current represents concentration of gas while minimizing cross sensitivity.


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