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, 2019
Filed:
Dec. 13, 2016
Honeywell International Inc., Morris Plains, NJ (US);
Robert E. Higashi, Shorewood, MN (US);
Karen M. Newstrom-Peitso, Hopkins, MN (US);
HONEYWELL INTERNATIONAL INC., Morris Plains, NJ (US);
Abstract
A gas sensor that includes a heat source and a gas sensing film. The gas sensing film includes a polycrystalline tungsten trioxide film thermally connected to the heat source and a plurality of islands of gold on a surface of the polycrystalline tungsten trioxide film. The surface of the polycrystalline tungsten trioxide film is exposed between the islands of gold to allow the polycrystalline tungsten trioxide film to sense gas. A first electrode that electrically connected to the polycrystalline tungsten trioxide film and a second electrode is electrically connected to the polycrystalline tungsten trioxide film. The resistance of the polycrystalline tungsten trioxide film between the first electrode and the second electrode changes when the polycrystalline tungsten trioxide film is exposed to a particular type of gas.