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:
Jan. 23, 2001
Filed:
Oct. 15, 1998
Applicant:
Inventor:
Morimi Hashimoto, Wako, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 ;
U.S. Cl.
CPC ...
G11B 5/66 ;
Abstract
Disclosed herein is a magneto-optical medium of the type that information recorded therein is reproduced by displacing a domain wall, the medium comprises a substrate, and a magnetic layer provided on the substrate, which permits domain wall displacement, wherein the surface roughness Ra of the substrate is 1.2 nm or smaller.