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:
Jan. 22, 1991
Filed:
Sep. 25, 1989
Hans Krause, Ban Nauheim, DE;
Helmut Stoll, Liederbach, DE;
Leybold AG, , DE;
Abstract
A method for manufacturing a film resistor for use as a thermal conductivity detector, particularly for gas analyzers. The film resistor is composed of a carrier of insulating material and of a thin resistance layer, preferably composed of platinum, that is applied to the carrier by cathode sputtering in an atmosphere inert gas. The resistant layer and the carrier are cleaned proceeding from the metallized side using an argon sputtering process. The film resistor is then coated with at least one plasma-enhanced CVD layer for the purpose of protection against aggressive gases.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile