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:
Jun. 22, 1982
Filed:
Jul. 14, 1980
Applicant:
Inventors:
Masahiro Shiozaki, Matsuyama, JP;
Kiyoshi Nawata, Matsuyama, JP;
Osamu Wada, Takatsuki, JP;
Kiyokazu Tsunawaki, Matsuyama, JP;
Takatoshi Kuratsuji, Matsuyama, JP;
Wataru Funakoshi, Matsuyama, JP;
Togi Suzuki, Matsuyama, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29H / ; D02G / ;
U.S. Cl.
CPC ...
428398 ; 264 49 ; 264561 ; 2642091 ; 264211 ; 264344 ;
Abstract
Hollow water-absorbing polyester filaments, each having fine pores evenly distributed throughout the filament and extending approximately in parallel to the filament axis, are produced by melt-spinning a blend of a polyester and a pore-forming agent consisting of at least one sulfonate compound of the formula: