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. 19, 1991
Filed:
May. 26, 1988
Applicant:
Inventors:
Richard L Dreibelbis, Waynesboro, VA (US);
Nathan E Houser, Afton, VA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01F / ; C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
264205 ; 2642108 ; 26421114 ; 525410 ; 528 61 ; 528 64 ; 528 68 ; 428364 ; 428394 ;
Abstract
A elastic fibers are formed from spandex polymer that is prepared by reacting a glycol prepared from a tetrahydrofuran/3-methyltetrahydrofuran copolymer with a diisocyanate and then chain extending the thusly capped glycol with a particular mixture of diamines. The fibers have a highly desirable combination of power, hot-wet creep and heat-set efficiency and can be prepared at high spinning and windup speeds.
Quick Actions:
Dreibelbis, Richard. (1991). Spandex fiber with copolymer soft segment (U.S. Patent No. 5000899). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5000899
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile