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. 21, 1997
Filed:
Apr. 25, 1995
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
425175 ; 264-133 ; 425810 ;
Abstract
An optical disk formation member has a center and an outer periphery. A tracking guide groove formation portion and a prepit formation portion are provided on the member. A first land plane on an internal peripheral side of the prepit formation has a depth that is different from a second land plane on the external peripheral side of the prepit formation portion. The second land plane, furthermore, is deeper than the first land plane on the internal peripheral side of the prepit formation portion.
Murakami, Motoyoshi. (1997). Optical disk formation member for making an optical disk substrate (U.S. Patent No. 5679386). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5679386
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile