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. 20, 1998
Filed:
Sep. 28, 1995
Applicant:
Inventor:
Chang-bin Lim, Seoul, KR;
Assignee:
Samsung Electro-Mechanics Co., Ltd., Kyungki-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204425 ; 204426 ; 204427 ; 204429 ; 422 83 ;
Abstract
A wide-range air fuel ratio oxygen sensor including a pump cell, a sensor cell, and a porous diffusion layer interposed between the pump cell and the sensor cell and a method for fabricating the oxygen sensor. The oxygen sensor generates output pumping current with a very small dispersion range of about .+-.2% by virtue of the activation effect of the catalyst such as Pt mixed into Al.sub.2 O.sub.3 of the porous diffusion layer.