Title:
WATER PURIFICATION APPARATUS
Document Type and Number:
WIPO Patent Application WO1999040031
Kind Code:
A3
Abstract:
The present invention relates to the use of a hydrophilic membrane to provide by the process of vaporation through the membrane water suitable for agricultural irrigation, industrial use, hydrating or rehydrating of food or agricultural or pharmaceutical compositions. The present invention also relates to a water purification apparatus which includes the hydrophilic membrane, comprising one or more layers of hydrophilic polymers, to purify water which may contain suspended or dissolved impurities and solids, including but not limited to seawater, brackish water and other kinds of polluted water.
Inventors:
TONKIN MARK CHRISTOPHER
YOUNG MARK ANDREW
KIRCHNER OLAF NORBERT
YOUNG MARK ANDREW
KIRCHNER OLAF NORBERT
Application Number:
PCT/US1999/002291
Publication Date:
November 11, 1999
Filing Date:
February 04, 1999
Export Citation:
Assignee:
DU PONT (US)
DESIGN TECHNOLOGY & INNOVATION (GB)
DESIGN TECHNOLOGY & INNOVATION (GB)
International Classes:
A01C1/02; A01C1/04; A01G9/24; A01G27/00; A01G27/04; A23L1/00; A23L3/40; A61K9/00; B01D61/00; B01D61/36; B01D71/48; B01D71/76; B01D71/80; C02F1/44; C08J5/18; F24F6/04; (IPC1-7): C02F1/44; B01D61/36; A01G9/24; A01G27/04; F24F6/02; A23L1/00; A61K9/00
Domestic Patent References:
| WO1995003033A1 | 1995-02-02 |
Foreign References:
| US5595662A | 1997-01-21 | |||
| US5348691A | 1994-09-20 | |||
| EP0521726A1 | 1993-01-07 | |||
| EP0808657A2 | 1997-11-26 | |||
| EP0238941A1 | 1987-09-30 | |||
| US5657577A | 1997-08-19 | |||
| US4978505A | 1990-12-18 | |||
| US4832690A | 1989-05-23 | |||
| US3415719A | 1968-12-10 | |||
| US4725481A | 1988-02-16 |
Other References:
KORNGOLD ET AL: "Water desalination by pervaporation with hollow fiber membranes", DESALINATION, vol. 107, no. 2, 1 October 1996 (1996-10-01), pages 121-129, XP004071159
PATENT ABSTRACTS OF JAPAN vol. 097, no. 012 25 December 1997 (1997-12-25)
PATENT ABSTRACTS OF JAPAN vol. 097, no. 012 25 December 1997 (1997-12-25)
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