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:
Apr. 24, 1984
Filed:
Feb. 19, 1982
Applicant:
Inventor:
Elmer E Most, Jr, Kinston, NC (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ;
U.S. Cl.
CPC ...
2642095 ; 264234 ; 2642888 ; 2642893 ; 264345 ;
Abstract
A process for increasing the percent void of hollow filaments by contacting the filaments with water at a temperature of at least about 92.degree. C. for at least about 3 seconds. It is necessary that the treatment be carried out while the filaments are in an amorphous condition. Preferred filaments are polyesters.