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. 08, 2024
Filed:
Jul. 23, 2019
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Hiroshi Nakayama, Miyagi, JP;
Hiroyuki Takemoto, Miyagi, JP;
Minoru Kikuchi, Miyagi, JP;
Minoru Matsuura, Miyagi, JP;
Assignee:
SONY CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01); B29C 45/00 (2006.01); B29D 17/00 (2006.01); G11B 7/2534 (2013.01);
U.S. Cl.
CPC ...
G11B 7/2534 (2013.01); B29C 45/00 (2013.01); B29C 45/0001 (2013.01); B29D 17/005 (2013.01); Y10T 428/31507 (2015.04);
Abstract
There is provided an optical recording medium substrate including a polycarbonate in which an average molecular weight is in a range from 15000 to 16000, and mass per unit volume at 25° C. is in a range from 1.1930 g/cmto 1.2000 g/cm.