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:
Dec. 10, 1991
Filed:
Dec. 14, 1990
Applicant:
Inventor:
Robert A Cipriano, Lake Jackson, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ; C09K / ;
U.S. Cl.
CPC ...
252 77 ; 252 73 ; 252572 ;
Abstract
An electrorheological fluid including a discrete phase of the reaction product of a polymeric or monomeric crown ether and a quaternary amine, which forms non-abrasive, low density organic fibrils, in a high dielectric strength, low dielectric constant continuous phase fluid. The crown ethers are selected from both oxygen-based and sulfur-based crown ethers.