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:
Apr. 16, 1985
Filed:
May. 18, 1983
Applicant:
Inventors:
Masashi Anonuma, Kanagawa, JP;
Yasuo Tamai, Kanagawa, JP;
Tsunehiko Sato, Kanagawa, JP;
Shinichi Funabashi, Kanagawa, JP;
Hiroshi Ogawa, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ;
U.S. Cl.
CPC ...
252 6254 ; 427128 ; 428900 ;
Abstract
A process for preparing a magnetic coating composition using a dried magnetic metal powder, or a magnetic metal powder containing 50% by weight or less of a solvent is described. The process comprises adding from 0.1 to 10 parts by weight of an abrasive, from 5 to 20 parts by weight of a main binder, and from 0 to 60 parts by weight of a solvent to 100 parts by weight (calculated as a dry powder) of the magnetic metal powder and, thereafter, kneading the resulting mixture while applying a shearing stress of from about 20 to about 300 kg/cm.sup.2.