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:
Mar. 23, 1993
Filed:
Dec. 15, 1989
Applicant:
Inventors:
Assignees:
Calsonic Corporation, Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01N / ;
U.S. Cl.
CPC ...
324663 ; 324690 ; 324449 ; 324450 ; 73 6143 ;
Abstract
A fuel sensor for sensing methanol in methanol-mixed fuel, which comprises a structure which defines a fuel passage through which the mixed fuel flows, an electrode assembly including a pair of probe portions which are exposed to the fuel passage, and an electric circuit causing the paired probe portions to exhibit positive and negative characteristics respectively in the mixed fuel. At least the positive probe portion is intimately covered with an electrically insulating film.