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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.:

US 12553857 B1

PDFFull Text
Date of Patent:
Feb. 17, 2026

Filed:

Apr. 13, 2018

Sensor apparatus and sensor unit

Applicant:

Ngk Spark Plug Co., Ltd., Nagoya, JP;

Inventors:

Takanori Nunome, Komaki, JP;

Satoshi Teramoto, Nisshin, JP;

Shoichi Hasegawa, Komaki, JP;

Tomomi Imaida, Nagoya, JP;

Assignee:

Niterra Co., Ltd., Nagoya, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

James Lin

Assistant Examiner:

Vivian A Tran

Int. Cl.
CPC ...
G01N 27/416 (2006.01); G01N 27/04 (2006.01); G01N 27/12 (2006.01); G01N 27/406 (2006.01); G01N 27/407 (2006.01); G01N 27/41 (2006.01); G01N 27/417 (2006.01);
U.S. Cl.
CPC ...
G01N 27/4163 (2013.01); G01N 27/041 (2013.01); G01N 27/045 (2013.01); G01N 27/123 (2013.01); G01N 27/4065 (2013.01); G01N 27/4067 (2013.01); G01N 27/4073 (2013.01); G01N 27/41 (2013.01); G01N 27/4175 (2013.01);
Abstract

A sensor control apparatus () calculates the concentration of oxygen using a gas sensor () including a sensor element () and a heater (). The sensor control apparatus () repeatedly obtains internal resistance data representing an internal resistance value Rpvs of an oxygen-ion-conductive solid electrolyte body () and pump current data representing the value of pump current Ip which flows between a pair of pump electrodes () and () and whose value varies with the concentration of oxygen. The sensor control apparatus () corrects the value of the pump current Ip based on the internal resistance value Rpvs, a target internal resistance value, and a derivative value dRpvs/dt calculated based on a plurality of the repeatedly obtained internal resistance values Rpvs.

Find Patent Forward Citations

Nunome, Takanori. (2026). Sensor apparatus and sensor unit (U.S. Patent No. 12553857). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12553857

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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