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:
Feb. 01, 2005
Filed:
May. 10, 2002
Toyoji Ataka, Nagano, JP;
Yuji Ando, Nagano, JP;
Satoru Nakamura, Nagano, JP;
Katsuya Masuda, Nagano, JP;
Manabu Shimosato, Nagano, JP;
Toyoji Ataka, Nagano, JP;
Yuji Ando, Nagano, JP;
Satoru Nakamura, Nagano, JP;
Katsuya Masuda, Nagano, JP;
Manabu Shimosato, Nagano, JP;
Fuji Electric Co., Ltd., Kawasaki, JP;
Abstract
A magnetic recording medium and method of manufacturing the same including directly texturing a surface of a non-magnetic substrate made of a glass material to form circular concentric grooves thereon, forming a seed layer on the non-magnetic substrate, forming an under layer on the seed layer, forming a magnetic layer on the under layer, and forming a protective layer on the magnetic layer. A ratio of an in-plane remanent magnetization in a circumferential direction of the magnetic recording medium to an in-plane remanent magnetization in a radial direction of the magnetic recording medium is equal to or greater than 1.05.