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:
Sep. 24, 1991
Filed:
Oct. 20, 1989
Applicant:
Inventors:
Yasuyuki Yamada, Kanagawa, JP;
Mikihiko Kato, Kanagawa, JP;
Yasuhi Endo, Kanagawa, JP;
Masaya Kojima, Kanagawa, JP;
Yasuo Nagashima, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428 64 ; 428694 ; 428900 ; 4284259 ;
Abstract
A magnetic disk comprising a nonmagnetic support having provided thereon a magnetic layer comprising a ferromagnetic metal powder and a binder resin, wherein the magnetic layer has a mechanical loss tangent, tan .delta., of from 8.times.10.sup.-3 to 6.times.10.sup.-2, measured at a frequency of 110 Hz and in a temperature range of from 20.degree. to 50.degree. C. with a temperature increase rate of 2 deg/min.
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Yamada, Yasuyuki. (1991). Magnetic disk having a magnetic layer comprising a binder and (U.S. Patent No. 5051287). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5051287
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