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:
Oct. 16, 1984
Filed:
Sep. 30, 1982
Applicant:
Inventor:
Kumaran M Nair, East Amherst, NY (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; C22C / ; B22F / ; C22B / ;
U.S. Cl.
CPC ...
148 / ; 75 / ; 148 / ; 148-627 ; 252513 ; 252514 ;
Abstract
A method for activating the surface of finely divided particles of conductive metals having a thin surface coating of an oxide of the conductive metal comprising the steps of (a) treating the surface with an aqueous solution of a reducing agent when the conductive metal is a noble metal and either a reducing agent for the oxide or an inorganic acid when the conductive metal is a base metal, (b) washing the surface of the treated particles with an aqueous liquid, and (c) drying the surface of the washed particles.