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. 20, 1986
Filed:
Sep. 28, 1984
Applicant:
Inventor:
Arthur E Brewster, Thaxted, GB;
Assignee:
International Standard Electric Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G02B / ;
U.S. Cl.
CPC ...
250338 ; 250339 ; 250343 ; 350-16 ; 350166 ;
Abstract
A gas detector arrangement, e.g. for detecting carbon dioxide, includes an infra-red source, a photodetector and band pass filter disposed in the light path therebetween. The arrangement includes means for oscillating the pass-band of the filter across an absorption band edge of the gas to be detected. The arrangement is portable and may be installed in diving apparatus.
Brewster, Arthur. (1986). Infra-red light absorption gas detector (U.S. Patent No. 4590374). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4590374
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile