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:
Dec. 15, 1987
Filed:
Jul. 30, 1985
Applicant:
Inventors:
Masao Asano, Hino, JP;
Ryosuke Isobe, Hino, JP;
Yasuhisa Yamauchi, Hino, JP;
Hiroaki Yamagishi, Hino, JP;
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428403 ; 252 6254 ; 427131 ; 428328 ; 428329 ; 428407 ; 4284259 ; 428522 ; 428526 ; 428694 ; 428695 ; 428900 ;
Abstract
A magnetic recording medium comprising a magnetic layer containing a magnetic metal powder, a fatty acid and an ester thereof, and wherein the surface of said magnetic metal powder is pre-treated with a surfactant.
Asano, Masao. (1987). Magnetic recording media (U.S. Patent No. 4713293). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4713293
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile