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. 09, 1993
Filed:
Oct. 31, 1990
Applicant:
Inventor:
Henry Kobsa, Greenville, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425461 ; 264177130 ; 4251 / ; 425464 ;
Abstract
A spinneret made from a hardened metal plate having one or more slot shaped capillaries exiting the face of the spinneret. The walls of the capillaries taper toward the face of the spinneret, and each capillary has a length to width ratio of greater than about 2.