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:
Nov. 14, 1989
Filed:
Dec. 17, 1987
Applicant:
Inventors:
Takeo Ito, Yokohama, JP;
Hajime Takeuchi, Yokohama, JP;
Minoru Hashimoto, Kawasaki, JP;
Toshio Fukaya, Yokohama, JP;
Masumi Koishi, Sagamihara, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
427128 ; 264109 ; 427127 ; 428694 ; 428900 ;
Abstract
A method of manufacturing a magnetic recording medium has a step of mechanically pulverizing and mixing a composition of a binder consisting of a solid resin and a magnetic powder so as to form a mixed powder. The method allows mass-production of magnetic recording media having excellent outputs and S/N ratios.