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:
Jul. 06, 1999
Filed:
Sep. 30, 1997
Applicant:
Inventors:
Norio Suzuki, Wako-shi, Saitama, JP;
Daisuke Shimizu, Wako-shi, Saitama-ken, JP;
Yukio Noda, Wako-shi, Saitama-ken, JP;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204424 ; 204425 ; 204428 ; 2057845 ; 205785 ;
Abstract
An oxygen concentration-detecting device for an internal combustion engine includes an oxygen concentration sensor arranged in the exhaust system of the engine, for detecting concentration of oxygen present in exhaust gases emitted from the engine. Energization of a heater for heating the oxygen concentration sensor is started when the ignition switch is turned on. The energization of the heater is stopped after a predetermined time period has elapsed after the turning-on of the ignition switch.