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:
Jul. 11, 2006
Filed:
Dec. 29, 2004
Applicant:
Toshiyuki Ebina, Ohbu, JP;
Inventor:
Toshiyuki Ebina, Ohbu, JP;
Assignee:
Kabushiki Kaisha Meiki Seisakusho, Aichi-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention aims at increasing service life of an inner circumferential stamper holder in a die for molding disc substrates that is used when the disc substrates are injection molded. To that end, in the die for molding the disc substrates in which a stamperis supported by at least one of a stationary dieand a movable die, an abrasion resistant treatment is applied to at least a portion, which abuts against a side surfaceof a center opening of the stamper, of an outer circumferential surface 4of the inner circumferential stamper holdersupporting the stamper