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:
Jan. 31, 2023
Filed:
Jun. 20, 2019
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Yutaka Matsuo, Tokyo, JP;
Yoshio Kaita, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/18 (2006.01);
U.S. Cl.
CPC ...
G01N 27/18 (2013.01);
Abstract
A gas sensor includes a first thermistor as a detection element, a second thermistor as a reference element, a first heater for heating the first thermistor, a second heater for heating the second thermistor, and a control circuit that heats the first and second heaters such that the second thermistor has a higher temperature than the first thermistor in a first period of time and that the first thermistor has a higher temperature than the second thermistor in a second period of time.