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:
Dec. 10, 1991
Filed:
Jan. 23, 1991
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 541 ; 346137 ; 4273897 ;
Abstract
A method for producing an optical disc including the step of transferring a pattern of alternate projections and recesses from a stamper to a glass base plate by photopolymerization of a resin curable with ultraviolet rays, wherein the glass base plate is previously processed by surface processing by a suitable coupling agent. Before or after the surface processing with the coupling agent, the glass base plate is heated under a reduced pressure for improving bonding properties between the glass base plate and the resin curable with ultraviolet rays.