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:
Sep. 08, 2020
Filed:
Oct. 22, 2018
Applicant:
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Inventor:
Mehdi Afshari, Midlothian, VA (US);
Assignee:
DUPONT SAFETY & CONSTRUCTION, INC., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/34 (2006.01); D21H 27/00 (2006.01); D21H 13/26 (2006.01); D21H 15/10 (2006.01); D21H 19/12 (2006.01); D21H 23/04 (2006.01); D21H 17/67 (2006.01); D21H 23/66 (2006.01); D21H 19/84 (2006.01); D21H 21/14 (2006.01); D21H 17/68 (2006.01); D21H 19/24 (2006.01); F16D 69/02 (2006.01);
U.S. Cl.
CPC ...
D21H 27/00 (2013.01); D21H 13/26 (2013.01); D21H 15/10 (2013.01); D21H 17/34 (2013.01); D21H 17/67 (2013.01); D21H 17/675 (2013.01); D21H 17/68 (2013.01); D21H 19/12 (2013.01); D21H 19/24 (2013.01); D21H 19/84 (2013.01); D21H 21/14 (2013.01); D21H 23/04 (2013.01); D21H 23/66 (2013.01); F16D 69/026 (2013.01); F16D 2200/0095 (2013.01);
Abstract
A paper comprises from 60 to 99 weight percent of a aramid fibrous pulp and from 1 to 40 weight percent of a polyvinylpyrrolidone coating on the fiber surface, the coating being neither chemically nor electrostatically bound to the fibers. A friction paper composite comprising the paper and a resin coating is also described.