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:
Aug. 31, 2021
Filed:
Nov. 06, 2017
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Hiroshi Nakano, Tokyo, JP;
Masahiro Matsumoto, Tokyo, JP;
Yasuo Onose, Hitachinaka, JP;
Hiroaki Hoshika, Hitachinaka, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka, JP;
Abstract
An object of the present invention is to provide a gas sensor device capable of detecting a temporal change with high accuracy and maintaining measurement accuracy over a long period under a temperature environment susceptible to a complicated and wide range of change. The gas sensor device includes: heat insulating filmsandformed on a substrate; a first heaterprovided on the heat insulating filmsandand configured to measure physical quantity of gas; and a reference resistorformed in a resistive layer same as the first heater and formed on the heat insulating filmsand. The gas sensor device further includes a second heaterthat simultaneously heats the first heaterand the reference resistor