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. 26, 1997
Filed:
Jul. 28, 1994
Applicant:
Inventors:
Takuya Arase, Settsu, JP;
Yoshiyuki Shibuya, Settsu, JP;
Ikuo Kitamura, Settsu, JP;
Shigeo Daimon, Settsu, JP;
Assignee:
Daikin Industries Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428328 ; 428329 ; 4286 / ; 4286 / ; 4286 / ; 428695 ; 428900 ; 427128 ; 427131 ; 252 / ; 252 6254 ; 252 6255 ; 148105 ; 148122 ;
Abstract
The present invention provides acicular fine particles made up of iron and carbon, and these acicular metal iron fine particles can be prepared by contacting acicular iron carbide fine particles with a reducing agent containing no carbon atom. Further, the present invention provides a magnetic coating composition and magnetic recording medium containing the above acicular metal iron fine particles.