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:
May. 14, 1996
Filed:
May. 30, 1995
Applicant:
Inventors:
Makoto Sasaki, Yokohama, JP;
Katsuhiko Haji, Yokohama, JP;
Assignee:
Nippon Oil Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ;
U.S. Cl.
CPC ...
252 6256 ; 428403 ; 428407 ; 428900 ;
Abstract
A fluid having both magnetic and electrorheological effects contains electroconductive ferromagnetic particles, the surfaces of which are coated with a particular electrically insulating layer having a critical thickness and electrical resistance, dispersed in an electrically non-conductive solvent.