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:
Apr. 21, 1992
Filed:
Apr. 25, 1990
Applicant:
Inventors:
James E Stangroom, Sheffield, GB;
Ian Harness, Sheffield, GB;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; H01B / ; C10M / ;
U.S. Cl.
CPC ...
252 73 ; 252 74 ; 252 75 ; 252 781 ; 252 783 ; 252573 ; 252574 ; 252580 ; 252581 ;
Abstract
An electro-rheological fluid which comprises a solid particulate substance contained in a hydrophobic vehicle which is liquid at atmospheric pressure at least at temperatures below 50.degree. C. and which comprises a compound of the formula: