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:
Nov. 02, 1982
Filed:
Sep. 30, 1981
Applicant:
Inventor:
William C Brooks, Brownsburg, IN (US);
Assignee:
RCA Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204-5 ;
Abstract
An improved method is provided for the manufacture of records, molds, and stampers in which the matrix on which the molds and stampers are electroformed is subjected to demagnetization prior to electroforming to prevent tramp metal particles from adhering to the surface of the matrix and thereby causing microdefects in the electroformed parts.