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:
Oct. 16, 2001
Filed:
Jun. 18, 1998
Yunzhi Gao, Kumagaya, JP;
Yukio Nakanouchi, Kumagaya, JP;
Akira Kunimoto, Kumagaya, JP;
Masaharu Hasei, Kumagaya, JP;
Yongtie Yan, Kumagaya, JP;
Takashi Ono, Kumagaya, JP;
Kabushiki Kaisha Riken, Tokyo, JP;
Abstract
A nitrogen oxide sensor includes a solid electrolytic substrate exhibiting oxygen ion conductivity, a noble-metal reference electrode, which is active only to oxygen, formed on one side of the solid electrolytic substrate, and a sensing electrode, which is active to NOx and oxygen, formed on the opposite side of the solid electrolytic substrate. A potential difference across the sensing electrode and the reference electrode is output as a signal indicative of NOx concentration. Nitrogen oxides in a gas to be examined or measured gas are converted to NO,and to peroxides of nitrogen such as N,O,and NO,, after which the nitrogen oxides in the gas to be examined or measured gas are sensed by the sensing electrode as the peroxides of nitrogen such as N,O,and NO,or as a mixed gas of NO,and the peroxides of nitrogen.