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:
Apr. 14, 1987
Filed:
Dec. 31, 1984
Applicant:
Inventors:
Takashi Hatanai, Nagaoka, JP;
Koichi Mukasa, Koide, JP;
Keishi Nakashima, Nagaoka, JP;
Hiroshi Sato, Nagaoka, JP;
Assignee:
Alps Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428328 ; 428694 ; 252 6254 ;
Abstract
A magnetic recording medium for perpendicular magnetization includes a base of a nonmagnetic material, and a magnetic layer having perpendicular magnetic anisotropy on at least a face side of the base, the magnetic layer being composed of cobalt as a main component with carbon added thereto.
Hatanai, Takashi. (1987). Recording medium for perpendicular magnetization (U.S. Patent No. 4657812). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4657812
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile