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. 29, 1989
Filed:
Jul. 21, 1988
Applicant:
Inventors:
Hermann Koop, Ronnenberg, DE;
Claudia Pechtheiden-Meier, Hanover, DE;
Assignee:
Philips & DuPont Optical Company, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204-5 ;
Abstract
In a method of manufacturing a mould and providing it with a backing, the mould is derived from a parent information carrier by an electroforming process, after which electroforming process and prior to its separation from the parent information carrier the mould is provided with a backing. In order to reduce the cycle times and to improve the mechanical stability, the backing is formed by a UV-curable lacquer which is applied in liquid form and is distributed over the back of the mould, which is subsequently cured by exposure to ultraviolet light.