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:
Aug. 24, 1993
Filed:
Nov. 21, 1990
Katsumi Ryoke, Kanagawa, JP;
Youichi Hayata, Kanagawa, JP;
Junji Yazawa, Kanagawa, JP;
Toshihiko Miura, Kanagawa, JP;
Masaki Suzuki, Kanagawa, JP;
Tatsuya Oguri, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A magnetic recording medium having well-balanced properties with respect to head abrasion characteristics, head cleaning characteristics and drop out characteristics is disclosed, which comprises a non-magnetic support having thereon a magnetic layer containing a ferromagnetic powder and a binder, wherein the magnetic layer has been brought into contact with a carbon steel alloy or super hard alloy made from powders having a Mohs' hardness of at lease 6 and rubbed therewith. A process of producing the magnetic recording medium is also disclosed.