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:
Oct. 06, 1992
Filed:
Aug. 28, 1991
Applicant:
Inventors:
Tsutomu Okita, Kanagawa, JP;
Kazuko Hanai, Kanagawa, JP;
Akihiro Matsufuji, Kanagawa, JP;
Nobuo Aoki, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428336 ; 4284246 ; 4284259 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer comprising ferromagnetic fine powder uniformly dispersed in a binder, wherein the binder comprises at least one resin selected from the group consisting of a vinyl chloride resin and a urethane resin, said resin for the binder has a weight average molecular weight of about from 20,000 to 80,000 and contains a low molecular weight fraction having a weight average molecular weight of about 3,000 or less in an amount of about 3 wt. % or less based on the amount of the resin.