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:
May. 11, 2021
Filed:
May. 29, 2018
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
David Eric Schwartz, Concord, MA (US);
Jianer Bao, Sunnyvale, CA (US);
PALO ALTO RESEARCH CENTER INCORPORATED, Palo Alto, CA (US);
Abstract
Gas sensors for the detection of rare events consume very little or no power. The sensors include materials that interact with a target gas. Accumulation of the target gas on the sensor materials leads to a change in electrical properties of the sensor. The sensors may have high gain, meaning that a large electrical change is induced upon gas accumulation. The sensor might change from an extremely high resistance (open circuit) to a measurably low resistance, or it might change from a relatively low capacitance to a high capacitance. The gas sensors are connected to electronics that can transmit an alarm signal after gas has been detected. The electronics may be in a low power sleep mode until awakened by a signal from the sensor.