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. 23, 1990
Filed:
Sep. 26, 1989
Philips & Du Pont Optical Company, New York, NY (US);
Abstract
Method of producing a metal matrix for the manufacture of optically readable information carriers, in which a photoresist layer which contains an information track and is provided on a carrier is coated with an electroless gold layer, the gold layer at the side provided with the resist layer being exclusively in contact with organic material, the gold layer being provided with a first metal peel by electro-deposition, the carrier coated with the resist layer is removed, the gold layer-coated first metal peel provided by electro-deposition at the side having the gold layer with a second metal peel, the first metal peel being removed together with the gold layer and optionally a further metal copy of the second metal peel is produced by electro-deposition.