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:
Jul. 19, 1994
Filed:
Sep. 17, 1992
Applicant:
Inventors:
Michinobu Mieda, Shigi, JP;
Toshikazu Nagaura, Nara, JP;
Hirotoshi Takemori, Nara, JP;
Kenji Ohta, Kitakatsuragi, JP;
Hiroo Yoshidome, Kitakyushu, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G11B / ;
U.S. Cl.
CPC ...
3692751 ; 369283 ; 369291 ; 430271 ; 430275 ; 430945 ;
Abstract
An optical disc comprises an antistatic film of light transmission properties which is formed of a synthetic resin, includes a tin oxide with a phosphorous as electro-conductive filler and is provided on another side of a plastics substrate of the optical disc where an optical beam is applied.