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. 29, 2002
Filed:
Oct. 25, 2000
Applicant:
Inventors:
Jürgen Koch, Mühlheim, DE;
Sandra Wittpahl, Hanau, DE;
Leander Staab, late of Mömbris, DE;
Assignee:
Degussa AG, Hanau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 9/02 ;
U.S. Cl.
CPC ...
C22C 9/02 ;
Abstract
The invention relates t a flux-free brazing paste for the brazing of copper and copper alloys. The paste includes a binder consisting of a mixture of polyisobutene with a relative molar mass from 50,000 to 500,000 and paraffin within a melting-range from 40 to 90° C.