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:
Mar. 22, 2005
Filed:
Apr. 05, 2000
Applicants:
Toshitsugu Ono, Miyagi, JP;
Hirofumi Kondo, Miyagi, JP;
Tetsuhiro Sakamoto, Tokyo, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B003/02 ; B32B019/00 ; G11B007/24 ; G11B007/26 ; G03C003/00 ;
U.S. Cl.
CPC ...
Abstract
An optical recording medium in which deposition of impurities or damage to a surface of the medium illuminated by the light for signal recording and/or reproduction is to be prevented from occurring. An amine salt compound of perfluoropolyether having terminal carboxylic groups, represented by the chemical formulas (1) and/or (2):R—COONHRRR  (formula 1)RRRNHCO—R—COONHRRR  (formula 2)where Rdenotes a perfluoropolyether group and R, Rand Rdenote hydrogen or a hydrocarbon group, is held on the surface side illuminated by light.