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:
Sep. 02, 2003
Filed:
May. 05, 2000
Applicant:
Inventors:
Jürgen Koch, Mühlheim, DE;
Sandra Wittpahl, Hanau, DE;
Wolfgang Weber, Karlstein, DE;
Wolfgang Kohlweiler, Frankfurt, DE;
Assignee:
Degussa-Huls Aktingesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 3/5362 ; B23K 3/5363 ;
U.S. Cl.
CPC ...
B23K 3/5362 ; B23K 3/5363 ;
Abstract
A flux based on inorganic boron and/or halogen compounds for brazing difficult to wet metallic materials with silver- and copper-based solders, which contains, as an activating addition, based on the total amount of the flux, 0.01-10 wt. % of elemental boron and 0.01-10 wt. % of at least one of the elements Mo, W, Mn, Co, Ni, Pd, Cu or Ag in the form of elements, alloys or compounds. The activating addition brings about a substantial increase in the wettability by the solder, particularly in the case of difficult to wet stock materials.