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:
Nov. 25, 2008
Filed:
Jun. 25, 2004
Jill A. Conley, Chesterfield, VA (US);
Lenard Oscar Lundblad, Richmond, VA (US);
Edmund A. Merriman, Midlothian, VA (US);
Jill A. Conley, Chesterfield, VA (US);
Lenard Oscar Lundblad, Richmond, VA (US);
Edmund A. Merriman, Midlothian, VA (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The present invention relates to meta- and para-aramid pulp for use as reinforcement material in products such as seals and friction materials. The pulp comprises (a) fibril free meta-aramid particles, (b) irregularly shaped, para-aramid fibrous structures, and (c) water, whereby the para-aramid fibrous structures contact and are wrapped partially around at least some of the meta-aramid particles. The invention further relates to processes for making such aramid pulp.