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. 23, 2008
Filed:
May. 21, 2004
Applicants:
Kunihiko Tokura, Tokyo, JP;
Masaru Uryu, Chiba, JP;
Inventors:
Kunihiko Tokura, Tokyo, JP;
Masaru Uryu, Chiba, JP;
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
B29C 33/38 (2006.01);
U.S. Cl.
CPC ...
Abstract
In order to transcribe a pattern without seams of a photomask onto the whole or part of a die having a three-dimensional shape, a general-purpose polyester film coated with a photosensitive material is used as a photomask and, after forming a pattern, the photomask is struck through vacuum molding or the like to a die molded into the same shape as that of a die to be exposed and developed.