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:
Dec. 23, 1980
Filed:
Feb. 15, 1979
Applicant:
Inventors:
Yoshihiko Nakatani, Osaka, JP;
Seiichi Nakatani, Kadoma, JP;
Masayuki Sakai, Katano, JP;
Michio Matsuoka, Ibaragi, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
422 94 ; 73 2 / ; 324 / ; 338 34 ; 422 98 ;
Abstract
Combustible gas detecting element for detecting the concentration of a combustible gas such as isobutane, ethane, propane and hydrogen. It comprises .gamma.-Fe.sub.2 O.sub.3, .gamma.-Al.sub.2 O.sub.3 and at least one of La, Ce, Pr and Nd in terms of La.sub.2 O.sub.3, Ce.sub.2 O.sub.3, Pr.sub.2 O.sub.3 and Nd.sub.2 O.sub.3, respectively. This gas detecting element is an improvement over .gamma.-Fe.sub.2 O.sub.3, and is advantageous for its highly stable load life even under severe conditions of a high temperature and a high humidity and for its high sensitivity to a combustible gas.