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:
Feb. 19, 2002
Filed:
Oct. 23, 2000
Applicant:
Inventors:
Seiichi Otani, Tokyo, JP;
Shoei Yasuda, Tokyo, JP;
Assignee:
Riken Keiko Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 1/710 ;
U.S. Cl.
CPC ...
G08B 1/710 ;
Abstract
A gas detector-alarm comprises a hot-wire gas sensor having an actuating power control that supplies pulsed actuating power with a cycle T when the concentration of gas detected by the hot-wire gas sensor is lower than a first reference level, with a cycle T that is shorter than said cycle T at least once when the concentration of gas exceeds a second reference level, and with a cycle T again after an alarm has been triggered.
Otani, Seiichi. (2002). Gas detector-alarm employing hot-wire gas sensor (U.S. Patent No. 6348872). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6348872
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile