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:
Feb. 10, 2004
Filed:
Apr. 16, 2002
Applicant:
Inventors:
Tadashi Koyanagi, Nobeoka, JP;
Takao Abe, Nobeoka, JP;
Teruhiko Matsuo, Nobeoka, JP;
Mitsuyuki Yamamoto, Kanazawa, JP;
Assignee:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
D01F 6/00 ; D01F 6/62 ;
U.S. Cl.
CPC ...
D01F 6/00 ; D01F 6/62 ;
Abstract
The invention provides false twisted yarn of a polyester composite fiber characterized in that the fiber is composed of single-filaments which are laminated with two types of polyester components in a side-by-side or eccentrical core/sheath fashion, at least one of the two polyester components is poly(trimethylene terephthalate), the difference in intrinsic viscosity between the two polyester components is 0.05-0.9 (dl/g), and the false twisted yarn has latent crimpability and has at least 50% stretching elongation of developed crimps prior to boiling water treatment.