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. 23, 2021
Filed:
Jul. 13, 2016
Applicant:
Dupont Safety & Construction, Inc., Wilmington, DE (US);
Inventors:
Mark T. Aronson, Midlothian, VA (US);
Alicia Marie Castagna, Framingham, MA (US);
Joseph D Trentacosta, Wilmington, DE (US);
Paul Douglas Stull, Wilmington, DE (US);
Assignee:
DUPONT SAFETY & CONSTRUCTION, INC., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 8/08 (2006.01); D01D 5/34 (2006.01); D01D 5/04 (2006.01); D01F 8/12 (2006.01); D02G 3/04 (2006.01); D01D 5/253 (2006.01);
U.S. Cl.
CPC ...
D01F 8/08 (2013.01); D01D 5/04 (2013.01); D01D 5/34 (2013.01); D01F 8/12 (2013.01); D02G 3/045 (2013.01); D02G 3/047 (2013.01); D01D 5/253 (2013.01);
Abstract
This invention relates to a yarn, and a process for making the yarn, the yarn comprising a plurality of spun filaments having a distinct, continuous, uniform-density sheath of a first polymer surrounding a distinct, continuous core of a second polymer; the first polymer further having a thermal decomposition temperature at least 50 degrees Celsius lower than the thermal decomposition temperature of the second polymer.