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:
Dec. 18, 1975
Tatsuo Ishikawa, Nobeoka, JA;
Keiji Yamashita, Nobeoka, JA;
Norio Okubo, Nobeoka, JA;
Masahira Sakashita, Nobeoka, JA;
Arimichi Okamoto, Nobeoka, JA;
Tetsuhiro Kusunose, Nobeoka, JA;
Asahi Kasei Kogyo Kabushiki Kaisha, Osaka, JA;
Abstract
Synthetic fibers capable of absorbing aqueous medium are manufactured by simultaneously extruding the fiber material and a second material in a core and sheath arrangement. Turbulence is produced in the zone where these two materials combine which results in undulations in their cross-sections. The second material is then dissolved away with a solvent to leave a fiber with an undulating surface. When the second material is extruded as the core, the fiber is hollow with undulations on the inside while when the second material is extruded as the sheath the solid fiber has an undulating outer surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile