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:
Jun. 12, 1984
Filed:
Jul. 12, 1982
Applicant:
Inventors:
Kazumasa Fukuda, Tokyo, JP;
Yoshimi Kitahara, Tokyo, JP;
Assignee:
TDK Electronics Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428336 ; 360134 ; 360135 ; 360136 ; 2041 / ; 427132 ; 428457 ; 428458 ; 428692 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium has a magnetic recording layer comprising from 75 to 90% by weight of Co and up to 5% by weight of Cr, the rest being V. The magnetic recording layer has an easy magnetization axis in the perpendicular direction to the layer surface. The magnetic recording medium is prepared by sputtering a composition of Co-V-Cr onto a substrate at an industrially feasible deposition speed of at least 3000 .ANG./min to form the above mentioned recording layer on the substrate.
Quick Actions:
Fukuda, Kazumasa. (1984). Magnetic recording medium (U.S. Patent No. 4454195). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4454195
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile