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:
Mar. 10, 1992
Filed:
Dec. 27, 1990
Applicant:
Inventors:
Manfred Stuemke, Pforzheim, DE;
Harry Schiwiora, Pforzheim, DE;
Assignee:
Degussa Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
106 35 ; 4332171 ; 4332221 ; 4332281 ;
Abstract
Gold preparations are used for the production of highly porous coatings on metal surfaces by means of sintering. 1 to 10% by weight of a pore former is added to these gold preparations, the pore former comprises a material which suddenly decomposes or evaporates at 700.degree. to 1050.degree. C. and escapes from the layer without leaving a residue. Plastics and dental waxes in powder form are preferably used to this end.