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:
Jun. 30, 1987
Filed:
Dec. 12, 1984
Applicant:
Inventor:
Anthony Yates, Sutton Coldfield, GB;
Assignee:
Lucas Electrical Electronics & Systems Ltd., Birmingham, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
338 34 ; 338 36 ;
Abstract
An oxygen sensor which exhibits a change in electrical resistance as a function of oxygen partial pressure, comprises at least one of strontium ferrate (SrFeO.sub.3-x), barium ferrate (BaFeO.sub.3-x), and strontium barium ferrate (Sr.sub.1-b Ba.sub.b FeO.sub.3-x), where x is a variable and determines the degree of oxygen deficiency of the oxide, and b is 0 to 1, in which part of the iron in the ferrate lattice has been replaced by at least one element selected from the group consisting of zirconium, hafnium and tin.