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:
Oct. 29, 2019
Filed:
Nov. 20, 2015
Applicant:
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Inventors:
Tao Huang, Downingtown, PA (US);
Neil Jay Croft, Jr., Middletown, DE (US);
Zachary R. Dilworth, Wilmington, DE (US);
Assignee:
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/16 (2006.01); D04H 1/4291 (2012.01); D04H 1/4382 (2012.01); D04H 1/724 (2012.01); A41D 13/11 (2006.01); A62B 23/02 (2006.01); D01D 4/02 (2006.01); D01D 5/00 (2006.01); D01D 5/098 (2006.01); D01D 5/12 (2006.01); D01D 5/26 (2006.01); D01D 7/00 (2006.01); D04H 1/728 (2012.01); D04H 3/007 (2012.01); D04H 3/16 (2006.01); D04H 5/08 (2012.01); D01D 5/18 (2006.01); D01D 10/00 (2006.01);
U.S. Cl.
CPC ...
B01D 39/1623 (2013.01); A41D 13/11 (2013.01); A62B 23/02 (2013.01); D01D 4/02 (2013.01); D01D 4/025 (2013.01); D01D 5/0023 (2013.01); D01D 5/0985 (2013.01); D01D 5/12 (2013.01); D01D 5/18 (2013.01); D01D 5/26 (2013.01); D01D 7/00 (2013.01); D01D 10/00 (2013.01); D04H 1/4291 (2013.01); D04H 1/4382 (2013.01); D04H 1/724 (2013.01); D04H 1/728 (2013.01); D04H 3/007 (2013.01); D04H 3/16 (2013.01); D04H 5/08 (2013.01); B01D 2239/025 (2013.01); B01D 2239/0435 (2013.01); B01D 2239/064 (2013.01); B01D 2239/1208 (2013.01); B01D 2239/1216 (2013.01); B01D 2239/1233 (2013.01); B01D 2239/1258 (2013.01); B01D 2239/1291 (2013.01);
Abstract
The present disclosure is directed toward an improved nanofibrous electret filtration media of which the stand-alone electret nanofibrous web comprises a single source randomly intermingled fiber network that yields high breathability due to the high porosity and improved filtration efficiency for use as improved filtration media for respiratory devices and face masks.