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:
Mar. 01, 1988
Filed:
Apr. 02, 1986
Applicant:
Inventor:
Shiro Kaneko, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ;
U.S. Cl.
CPC ...
2041814 ; 252 6254 ; 427 57 ; 427128 ; 428900 ;
Abstract
A process of producing a magnetic recording medium comprises continuously circulating a magnetic coating composition prepared by dispersing a ferromagnetic powder in a solution of a high molecular binder while applying an ultrasonic treatment to the circulating magnetic coating composition, drawing out an amount of the ultrasonically treated magnetic coating composition necessary for coating from the circulating stream, and then coating the magnetic coating composition which is drawn out on to a non-magnetic support.