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:
Apr. 22, 2003
Filed:
Dec. 22, 1999
Yunzhi Gao, Kumagaya, JP;
Akira Kunimoto, Kumagaya, JP;
Yongtie Yan, Kumagaya, JP;
Hideyuki Kurosawa, Kumagaya, JP;
Yukio Nakanouchi, Kumagaya, JP;
Norio Miura, Fukuoka, JP;
Noboru Yamazoe, Kasuga, JP;
Masaharu Hasei, Kumagaya, JP;
Kabushiki Kaisha Riken, Tokyo, JP;
Abstract
A gas sensor for measuring concentration of a gas component in a measured gas, including a solid electrolytic substrate and at least two electrodes fixed to the substrate. At least a first electrode of the electrodes is disposed in the environment of the measurement gas, at least one of electrodes is polarized by applying a bias current or bias voltage, and a change in the potential of the polarized electrode is measured to thereby measure the concentration of the target gas.