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:
Aug. 11, 1992
Filed:
Feb. 20, 1991
Applicant:
Inventors:
Nagaaki Koshino, Yokohama, JP;
Miyozo Maeda, Atsugi, JP;
Yasuyuki Goto, Atsugi, JP;
Itaru Shibata, Tokyo, JP;
Kenichi Utsumi, Sagamihara, JP;
Akira Ushioda, Atsugi, JP;
Ken-ichi Itoh, Yamato, JP;
Kozo Sueishi, Atsugi, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11B / ;
U.S. Cl.
CPC ...
365106 ; 365113 ; 365114 ; 365215 ; 369289 ; 346 / ; 3461351 ; 346137 ; 430945 ;
Abstract
Recording and erasing optical information can be done by using an alloy film capable of forming two stable crystalline states differing in crystal texture and optical characteristics by being irradiated with optical energies under different conditions. A thin memory film preferably including 60 to 90 atom % of Indium (IN) and 10 to 40 atom % of Bismuth (Bi) is formed on a substrate.