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. 03, 2015
Filed:
Jan. 26, 2011
Masato Masuda, Mishima, JP;
Akira Kishiro, Mishima, JP;
Joji Funakoshi, Otsu, JP;
Yoshitsugu Funatsu, Mishima, JP;
Seiji Mizukami, Otsu, JP;
Masato Masuda, Mishima, JP;
Akira Kishiro, Mishima, JP;
Joji Funakoshi, Otsu, JP;
Yoshitsugu Funatsu, Mishima, JP;
Seiji Mizukami, Otsu, JP;
Toray Industries, Inc., , JP;
Abstract
A sea-island composite fiber has an island component which is ultrafine fibers having a noncircular cross-section, the ultrafine fibers being uniform in the degree of non-circularity and in the diameter of the circumscribed circle. The sea-island composite fiber includes an easily soluble polymer as the sea component and a sparingly soluble polymer as the island component, and the island component has a circumscribed-circle diameter of 10-1,000 nm, a dispersion in circumscribed-circle diameter of 1-20%, a degree of non-circularity of 1.2-5.0, and a dispersion in the degree of non-circularity of 1-10%.