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. 14, 1996
Filed:
Sep. 20, 1994
Applicant:
Inventor:
Susumu Yasunaga, Osaka, JP;
Assignee:
Figaro Engineering Inc., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340634 ; 340632 ; 422 94 ; 422 98 ; 338 34 ; 73 3105 ; 73 3106 ;
Abstract
A CO detector, utilizing periodical temperature change of a metal oxide semi-conductor gas sensor, is equipped with a backup battery. When power cut of a commercial power supply is detected, the detector will be driven by the battery, and the gas sensor will be heated at 50.degree.-100.degree. C. for from 30 seconds to 1 minute and will be kept at room temperature for about 30 minutes. CO is detected by the minimum sensor output after the heating.
Yasunaga, Susumu. (1996). Method for co detection and its apparatus (U.S. Patent No. 5517182). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5517182
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