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. 08, 2016
Filed:
May. 18, 2011
Applicants:
Steven W. Smith, Waynesboro, VA (US);
Raymond S. P. Leung, Shatin, HK;
Inventors:
Steven W. Smith, Waynesboro, VA (US);
Raymond S. P. Leung, Shatin, HK;
Assignee:
INVISTA North America S.a.r.l., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G 3/36 (2006.01); D02G 3/32 (2006.01); D01F 8/16 (2006.01);
U.S. Cl.
CPC ...
D02G 3/36 (2013.01); D01F 8/16 (2013.01); D02G 3/32 (2013.01);
Abstract
Disclosed herein are spandex fibers having reduced friction combined to provide a multiple end spandex package. The spandex fibers have a sheath-core cross-section with a lubricating additive is included in the sheath. A fusing additive specifically excluded to avoid coalescence among the individual filaments in the yarn. When combined in a yarn package, the multiple filaments are separable.