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. 12, 1989
Filed:
Mar. 11, 1987
Applicant:
Inventors:
Hughey A Rush, Williamsburg, VA (US);
Billy B Hibbard, Williamsburg, VA (US);
Johnson L Pursoo, Lake Jackson, TX (US);
John W Lindsay, Williamsburg, VA (US);
Thomas E Smith, Williamsburg, VA (US);
Kenneth Harper, Lanexa, VA (US);
MIchael V Tullos, Grimstead, VA (US);
James E Davis, Gloucester, VA (US);
Assignee:
BASF Corporation, Williamsburg, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
D04H / ;
U.S. Cl.
CPC ...
428288 ; 428290 ; 428297 ; 523152 ; 523153 ; 523155 ; 523156 ; 523157 ; 523158 ;
Abstract
An improved fibrous polyacrylonitrile mixture for use in friction products enables the production of low resiliency preforms by mixing an additive with a polyacrylonitrile wet gel. The additive is incorporated into the fiber in extremely large amounts. The additive is a member selected from the group consisting of: