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. 20, 1976
Filed:
Feb. 05, 1975
Applicant:
Inventors:
Reimar Faulhaber, Frankfurt am Main, DT;
Margareta Ascherfeld, Hattingen, DT;
Walter Fabinski, Hattersheim, DT;
Assignee:
Hartmann & Braun Aktiengesellschaft, Frankfurt, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356 51 ; 250346 ;
Abstract
The two beam analyzer has chambers traversed by infrared beams and passed through by test gas; the intensity of each beam is detected by a detector having chambers which are filled with gas of the same type as the gas to be detected (as a trace) in the test gas. Additionally, one beam path includes a selectivity cuvette or cell, filled exclusively with that type of gas, but at a rather low pressure.