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. 18, 1978
Filed:
Oct. 08, 1975
Applicant:
Inventor:
Sumio Kato, Mihara, JA;
Assignee:
Teijin Limited, Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29F / ; D01D / ;
U.S. Cl.
CPC ...
264171 ; 2641 / ; 264211 ;
Abstract
A process for producing sheath-core type electrically conductive synthetic composite filaments, which comprises simultaneously melt-extruding in a sheath/core filament configuration an electrically conductive core composition of a thermoplastic synthetic polymer containing an electrically conductive carbon black dispersed therein and a non-conductive sheath composition of a thermoplastic fiber-forming synthetic polymer, and taking up the extruded sheath-core type synthetic filaments at a take-up speed of at least 2,500 meters per minute; and an electrically conductive sheath-core type synthetic filament having a polyamide sheath.