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. 03, 2004
Filed:
Apr. 18, 2002
Takafumi Matsumura, Hitachinaka, JP;
Kenichi Katagishi, Hitachinaka, JP;
Masahiro Matsumoto, Hitachi, JP;
Keiji Hanzawa, Mito, JP;
Other;
Abstract
A flow rate signal analog-digital conversion circuit , an adjustment processing circuit and a chip temperature sensor circuit are disposed a single semiconductor chip to form an integrated circuit, and a chip temperature signal in a form of digital signal outputted from the chip temperature sensor circuit is inputted into the adjustment processing circuit in which correction reducing temperature dependent error in a series of signal processing circuits is performed. Thereby, a board temperature dependent error in a gas flow rate measuring device can be reduced in which adjustment is performed for digital signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile