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:
Jun. 25, 1985
Filed:
Apr. 23, 1982
Applicant:
Inventors:
Masaru Tanaka, Kyoto, JP;
Naoki Noguchi, Kyoto, JP;
Kenji Yoshino, Kyoto, JP;
Osamu Saitoh, Kyoto, JP;
Assignee:
Horiba, Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356435 ; 250565 ; 356437 ;
Abstract
An optical absorption analyzer for determining the concentration of low concentration components of a sample gas. Inexpensive voltage to frequency converters, up/down counters, and integrators are used to obtain a high accuracy determination which is independent of fluctuations in the strength of the light source used in the analyzer.