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:
Mar. 17, 2020
Filed:
Feb. 01, 2019
Applicant:
Dupont Safety & Construction, Inc., Wilmington, DE (US);
Inventors:
Tao Huang, Downingtown, PA (US);
Thomas Patrick Daly, Aston, PA (US);
Zachary R Dilworth, Wilmington, DE (US);
Assignee:
DUPONT SAFETY & CONSTRUCTION, INC., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 5/00 (2006.01); D01D 4/02 (2006.01); D01F 6/00 (2006.01); D01D 5/18 (2006.01);
U.S. Cl.
CPC ...
D01D 4/025 (2013.01); D01D 5/18 (2013.01); D01F 6/00 (2013.01); Y10T 428/298 (2015.01); Y10T 442/60 (2015.04);
Abstract
The present invention is directed toward an apparatus comprising a high speed rotating disk or bowl for nanofiber spinning from the rotational sheared thin film fibrillation at the enclosed serrations with the optimized stretching zone to produce the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 500 nm that yield the crystallinity higher than the polymer resin used in making the web.