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:
May. 01, 1979
Filed:
Jan. 11, 1978
Applicant:
Inventor:
Rudolf Pollner, Bamberg, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2041 / ;
Abstract
A solid closed ended tubular oxygen sensor element, particularly useful for sensing the oxygen content of exhaust gases from internal combustion engines. The closed end of the tubular element which is adapted to be exposed to the hot exhaust gases is made of zirconium oxide stabilized with yttrium oxide and/or ytterbium dioxide. The remaining main portion of the tubular element is made of zirconium dioxide stabilized with calcium oxide. The invention also provides methods of manufacturing these tubular elements.