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. 08, 1976
Filed:
Mar. 17, 1975
Applicant:
Inventor:
Vilmos Frenyo, Budapest, HU;
Assignee:
Novex Talalmanyfejleszto es Ertekesito Kulkereskedelmi Rt., Budapest, HU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
2323 / ; 2325 / ; 324 / ;
Abstract
A component of a gaseous mixture, particularly carbon dioxide, can be measured in extremely small quantities or concentrations, by supporting on a solid surface a thin film of a liquid, e.g. an aqueous solution of barium hydroxide, which reacts with the gaseous component so as substantially to alter the electrical resistance of the solution. The electric resistance of the film is measured between electrodes, before and after exposure to the test gas. The test is much more sensitive than if a confined body of liquid were used as the test solution.