logo

For the Inventor, By the Inventor

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 8794451 B1

PDFFull Text
Expired
Date of Patent:
Aug. 05, 2014

Filed:

Aug. 20, 2010

Hollow-fiber ultrafiltration membrane with excellent fouling resistance

Applicants:

Kenta Kochi, Ohtsu, JP;

Tsuyoshi Hoshiyama, Iwakuni, JP;

Hideki Sugihara, Ohtsu, JP;

Akihiro Ariji, Ohtsu, JP;

Koichi Baba, Iwakuni, JP;

Hideki Yamada, Osaka, JP;

Inventors:

Kenta Kochi, Ohtsu, JP;

Tsuyoshi Hoshiyama, Iwakuni, JP;

Hideki Sugihara, Ohtsu, JP;

Akihiro Ariji, Ohtsu, JP;

Koichi Baba, Iwakuni, JP;

Hideki Yamada, Osaka, JP;

Assignee:

Toyo Boseki Kabushiki Kaisha, Osaka-shi, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Ana Fortuna

Int. Cl.
CPC ...
B01D 33/21 (2006.01); B01D 39/00 (2006.01); B01D 63/06 (2006.01); B01D 67/00 (2006.01); B01D 39/14 (2006.01); B01D 71/28 (2006.01); B01D 71/68 (2006.01); B01D 69/08 (2006.01); B01D 61/00 (2006.01);
U.S. Cl.
CPC ...
B01D 71/68 (2013.01); B01D 69/08 (2013.01); B01D 71/28 (2013.01);
Abstract

An object of the present invention is to provide a hollow-fiber ultrafiltration membrane that can be used in treatment in various aqueous fluids such as water purification, beverage treatment, seawater clarification, and that has excellent fractionation characteristics and permeability, while deterioration of its performance due to passage of time is minimized, and that has excellent recovery of the membrane-separation characteristics by cleaning. The main feature of the hollow-fiber ultrafiltration membrane of the present invention is that the specific surface area of the membrane surface to which raw water is supplied falls within the range from not less than 1.10 to not greater than 1.55. The present invention also provides a process for producing a hollow-fiber ultrafiltration membrane, wherein a heat treatment is conducted under the condition that the membrane having a residual organic solvent content of not greater than 300 mg/g.

Find Patent Forward Citations

Kochi, Kenta. (2014). Hollow-fiber ultrafiltration membrane with excellent fouling resistance (U.S. Patent No. 8794451). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8794451

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…