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:
Aug. 06, 2002
Filed:
Dec. 11, 1998
Makoto Asano, Ibaraki, JP;
Toshimasa Kuroda, Ibaraki, JP;
Shinji Owaki, Ichinomiya, JP;
Kinya Kumazawa, Yokohama, JP;
Hiroshi Tabata, Yokohama, JP;
Susumu Shimizu, Hiratsuka, JP;
Akio Sakihara, Isehara, JP;
Other;
Abstract
A flat optical-interference-functional fiber formed by alternately laminating individually independent layers of polymers having different refractive indices in parallel with the major axis direction of its flat cross section, characterized in that (a) the ratio (SP ratio) of the solubility parameter value (SP ) of high refractive index polymer to the solubility parameter value (SP ) of low refractive index polymer is in the range of 0.8≦SP /SP ≦1.1, and a fibrous structure using the fiber. According to the present invention, there are provided a fiber which has high color development intensity based on optical interference and forms clear color; and a fibrous structure thereof.