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:
Jan. 26, 1999
Filed:
Apr. 01, 1996
Shuzo Kudo, Nara, JP;
Hisao Ohnishi, Osaka, JP;
Masamichi Ipponmatsu, Nishinomiya, JP;
Shoji Tanaka, Tokyo, JP;
Hisao Yamauchi, Nagareyama, JP;
Satoshi Takano, Ryugasaki, JP;
Mitsunobu Wakata, Sagamihara, JP;
Osaka Gas Co., Ltd., Osaka, JP;
International Superconductivity Technology Center, Tokyo, JP;
Mitsubishi Denki KK, Tokyo, JP;
Abstract
A nitrogen oxide detecting sensor, according to the present invention, incorporates a gas detecting portion including, as a main component thereof, an oxide compound having electric conductivity or semiconductivity, the oxide compound having a crystal structure of 2212 phase and expressed generally as: Bi.sub.2 Sr.sub.2 (Ca.sub.1-x Y.sub.x)Cu.sub.2 O.sub.8.+-..delta. where 0.6.ltoreq.x<1; 0.ltoreq..delta..ltoreq.1. Electrodes are electrically connected to the gas detecting portion. When the gas detecting portion is analyzed by X-ray diffraction using cuK.alpha. rays to obtain diffraction peak values thereof in the range of a diffraction angle between 5.degree. and 65.degree., the diffraction peak values having a sum .SIGMA. I�2212! expressed by one of the following: