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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.:

US 6720070 B1

PDFFull Text
Date of Patent:
Apr. 13, 2004

Filed:

Apr. 27, 2001

Hydrophilic polyester fiber and hydrophilic nonwoven fabric using the same and their production

Applicant:
Inventors:

Tadaaki Hamaguchi, Osaka, JP;

Hiroshi Maruyama, Iwakuni, JP;

Shigeki Tanaka, Ohtsu, JP;

Hisao Nishinaka, Osaka, JP;

Assignee:

Toyo Boseki Kabushiki Kaisha, , JP;

Attorney:

Kenyon & Kenyon

Primary Examiner:

Elizabeth M Cole

Assistant Examiner:

Jeremy R Pierce

Int. Cl.
CPC ...
B32B 1/900 ; D02G 3/00 ;
U.S. Cl.
CPC ...
B32B 1/900 ; D02G 3/00 ;
Abstract

A hydrophilic polyester fiber is supplied with an aqueous mixed dispersion on the surface and made hydrophilic by being heated at 35° C. or higher, and the aqueous mixed dispersion employed contains a polyester-polyether block copolymer composed of a polyester component and a polyether component and is stable at lower than 35° C. and precipitates the polyester-polyether block copolymer when its dispersion state is broken by being heated to 35° C. or higher.

Find Patent Forward Citations

Hamaguchi, Tadaaki. (2004). Hydrophilic polyester fiber and hydrophilic nonwoven fabric using the same and their production (U.S. Patent No. 6720070). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6720070

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