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:
Feb. 08, 2005
Filed:
Dec. 12, 2001
Applicants:
Yoichiro Sako, Tokyo, JP;
Takashi Kihara, Chiba, JP;
Tomihiro Nakagawa, Kanagawa, JP;
Tatsuya Inokuchi, Tokyo, JP;
Inventors:
Yoichiro Sako, Tokyo, JP;
Takashi Kihara, Chiba, JP;
Tomihiro Nakagawa, Kanagawa, JP;
Tatsuya Inokuchi, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B003/02 ;
U.S. Cl.
CPC ...
Abstract
An optical disc recording method of irradiating an optical beam to an optical disc including a basal plate made of synthetic resin which has a concavo-convex pattern formed in advance on one surface thereof, and a reflective coat made of metal which is formed over the concavo-convex pattern on the basal plate, to physically change the concavo-convex pattern so as to record identification data.