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:
Sep. 11, 1990
Filed:
May. 25, 1989
Takao Kojima, Nagoya, JP;
Yasuhiro Ujita, Kasugai, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
An oxygen sensor including a detection element with electrodes for detecting an oxygen partial pressure, a metal member for containing the detection element, and an insulation spacer for supporting the detection element. The oxygen sensor further includes an insulating layer for covering the surface of a recess defined by the detection element, the metal member, and the insulating spacer, thus preventing the deterioration of insulation between the electrodes of the detection element and the metal member. The oxygen sensor of this invention can accurately detect the oxygen partial pressure for a long time.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile