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:
Sep. 12, 2000
Filed:
Sep. 25, 1998
Koyata Takahashi, Kanagawa, JP;
Koji Katayama, Kanagawa, JP;
Tosoh Corporation, Yamaguchi, JP;
Abstract
A magneto-optical recording medium and a reading method thereof are disclosed, in which the reading output is hardly reduced even in bits written at sufficiently narrower intervals than the optical diffraction limit of light for reading. The magneto-optical recording medium is that in an area the temperature of which has become not lower than a first predetermined temperature by radiation of a reading laser beam, a reading layer becomes a perpendicularly magnetized film, while recording marks in a recording layer are transferred to the reading layer, and these recording marks transferred to the reading layer are extended in the reading layer in an area the temperature of which has reached a second predetermined temperature or more.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile