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:
Aug. 31, 1993
Filed:
Jul. 06, 1992
Applicant:
Inventors:
Rudi Steinke, Hanau, DE;
Stefan Schittny, Alzenau-Kaelberau, DE;
Bernd Kempf, Freigericht, DE;
Werner Groll, Alzenau-Hoerstein, DE;
Assignee:
Degussa Aktiengesellschaft, Hanau, DE;
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
22826261 ; 420508 ; 420580 ; 420589 ; 420587 ;
Abstract
White solder alloys for dental and jewelry parts, with working temperatures around 1000.degree. C., contain 38 to 70% by weight gold, 6 to 20% by weight palladium, 8 to 40% by weight silver, 1 to 6% by weight iron and/or cobalt, 0 to 10% by weight copper, 0-5% each by weight indium, zinc and tin, 0 to 4% each by weight gallium and germanium, ruthenium and/or rhenium. The sum of the contents of tin, zinc, indium, gallium and germanium can be between 1 and 5% by weight.