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:
Dec. 25, 1990
Filed:
Oct. 31, 1988
Nobuyuki Ishiwata, Osaka, JP;
Chizuko Wakabayashi, Osaka, JP;
Takayuki Matsumoto, Osaka, JP;
Toshiyuki Okumura, Osaka, JP;
Junichi Homma, Osaka, JP;
Susumu Ito, Osaka, JP;
NEC Home Electronics Ltd., Osaka, JP;
Abstract
A Magneto-Optical disk having a transparent substrate, a Magneto-Optical film formed on the transparent substrate and a high corrosion-resistant film laminated on the Magneto-Optical film. The Magneto-Optical film is made of a perpendicular magnetic anisotropy material, the corrosion-resistant film is made of a metal or metal alloy. A foundation protecting layer may be formed on the transparent substrate with the Magneto-Optical film and the corrosion resistant film formed thereon. The Magneto-Optical film may be a plurality of films laminated alternately with a plurality of corrosion-resistant films.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile