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. 13, 1981
Filed:
Oct. 29, 1979
Applicant:
Inventors:
Terry J Gold, Flint, MI (US);
Frederick L Kennard, III, Holly, MI (US);
Paul C Kikuchi, Flint, MI (US);
Ralph V Wilhelm, Jr, Flint, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
2041 / ; 2041 / ;
Abstract
A method of sputtering a platinum exhaust gas electrode onto a vitrified zirconia thimble for an electrochemical-type exhaust gas oxygen sensor. Porous high surface area platinum films are deposited that have more consistent properties. A platinum target is spaced about 3.0-4.5 cm from the thimble and more than 6 cm from the sputtering anode. A pressure of about 10-20 millitorr is used during sputtering at a DC power of about 13-22 watts/cm.sup.2 of target area.