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:
Sep. 03, 1985
Filed:
Jul. 06, 1984
Applicant:
Inventor:
Norio Okabayashi, Himeji, JP;
Assignee:
Daicel Chemical Industries, Ltd., Sakai, JP;
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ; C25D / ;
U.S. Cl.
CPC ...
204-5 ; 204212 ; 204275 ;
Abstract
Method and apparatus for producing a desired thickness distribution on a stamping plate in a rotary electroforming process. The stamping plate is used to produce a high density information recording carrier. A shielding plate is detachably mounted adjacent a fixed anode in an electrochemical bath. Another shielding plate is detachably mounted adjacent the rotary cathode. During electroforming either or both shielding plates are put into position or removed at appropriate times to produce the desired thickness distribution.
Okabayashi, Norio. (1985). Method and apparatus for electroforming a stamper for producing a (U.S. Patent No. 4539079). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4539079
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