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. 28, 2001
Filed:
Feb. 22, 1999
Applicant:
Inventors:
Takafumi Atarashi, Tokyo, JP;
Katsuto Nakatsuka, Miyagi, JP;
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B 3/20 ;
U.S. Cl.
CPC ...
H01B 3/20 ;
Abstract
A rheological fluid of a bright color which has excellent light resistance and weather resistance, is stable even when used in a high-temperature environment, can be stored over long, and mightily and precisely actuates in response to an electric field or a magnetic field or to both. The rheological fluid comprises a medium in which a film-coated powder comprising a base particle having thereon a coating layer(s) is dispersed.