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:
Nov. 20, 1984
Filed:
Oct. 13, 1982
Applicant:
Inventor:
Hans Pink, Starnberg, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
422 92 ; 422 83 ; 422 88 ; 436148 ;
Abstract
Long-term monitoring of pollutants or moisture in a fluid stream, such as an air stream, is achieved by electrically measuring (and optionally recording) pressure changes caused by a reaction between a pollutant or moisture in the stream and a chemical capable of reacting with such pollutant or moisture. The invention is useful for monitoring apparatus used in environment protection as well as measuring apparatus in determining moisture concentrations in, for example, protective or carrier gas streams utilized in semiconductor technology.