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:
May. 23, 2000
Filed:
Apr. 27, 1993
Applicant:
Inventors:
Kenji Ohta, Kitakatsuragi-gun, JP;
Toshikazu Nagaura, Nara, JP;
Masayasu Futagawa, Nara, JP;
Shinji Yamagami, Tenri, JP;
Yoshiteru Murakami, Nishinomiya-sho, JP;
Hiroyuki Ikenaga, Nara, JP;
Michinobu Mieda, Shiki-gun, JP;
Tetsuya Inui, Nara, JP;
Akira Takahashi, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
369288 ;
Abstract
An optical disc having a recording film formed on one surface of a plastics substrate transparent to light, a first protection film formed on the recording film, a moisture proof film formed on the other surface of the substrate, and a second protection film formed on the moisture proof film.