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:
Feb. 26, 1985
Filed:
Feb. 21, 1984
Applicant:
Inventors:
Takashi Takeuchi, Utsunomiya, JP;
Syoji Kobayashi, Utsunomiya, JP;
Tsuyoshi Ootani, Ichikaimachi, JP;
Tetsuya Imamura, Utsunomiya, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
428329 ; 427127 ; 427130 ; 427132 ; 428328 ; 428339 ; 428407 ; 4284259 ; 428457 ; 428480 ; 428694 ; 428900 ;
Abstract
Magnetic recording particles (i) are coated with a reaction product of (ii) an isocyanate compound such as polyisocyanate compounds and isocyanate compounds having a hydrolyzable alkoxysilane group, and (iii) a phosphoric ester of an alkanol, alkenol, alkylene oxide additives thereof or aliphatic carboxylic alkylene oxides.