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Acton, MA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Selective membrane having a high fouling resistance
Patent number
9,089,820
Issue date
Jul 28, 2015
WOONGJIN CHEMICAL CO., LTD.
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for preparing a filtration membrane and filtration membrane...
Patent number
8,820,540
Issue date
Sep 2, 2014
Woongjin Chemical Co., Ltd.
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Selective membrane having a high fouling resistance
Patent number
7,913,857
Issue date
Mar 29, 2011
Woongjin Chemical Co., Ltd.
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Selective membrane having a high fouling resistance
Patent number
7,537,697
Issue date
May 26, 2009
Woongjin Chemical Co., Ltd.
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Composite polyamide reverse osmosis membrane and method of producin...
Patent number
7,479,300
Issue date
Jan 20, 2009
Woongjin Chemical Co., Ltd.
Ja-Young Koo
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Selective membrane having a high fouling resistance
Patent number
6,913,694
Issue date
Jul 5, 2005
Saehan Industries Incorporation
Ja-Young Koo
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Composite polyamide reverse osmosis membrane and method of producin...
Patent number
6,368,507
Issue date
Apr 9, 2002
Saekan Industries Incorporation
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Composite polyamide reverse osmosis membrane and method of producin...
Patent number
6,245,234
Issue date
Jun 12, 2001
Saehan Industries Incorporation
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Composite polyamide reverse osmosis membrane and method of producin...
Patent number
6,063,278
Issue date
May 16, 2000
Saehan Industries Inc.
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Composite polyamide reverse osmosis membrane and method of producin...
Patent number
6,015,495
Issue date
Jan 18, 2000
Saehan Industries Incorporation
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
SELECTIVE MEMBRANE HAVING A HIGH FOULING RESISTANCE
Publication number
20120211414
Publication date
Aug 23, 2012
Woongjin Chemical Co., Ltd.
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Method for preparing a filtration membrane and filtration membrane...
Publication number
20120193284
Publication date
Aug 2, 2012
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Composite polyamide reverse osmosis membrane showing high boron rej...
Publication number
20070227966
Publication date
Oct 4, 2007
Ja-young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Selective membrane having a high fouling resistance
Publication number
20070175820
Publication date
Aug 2, 2007
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Selective membrane having a high fouling resistance
Publication number
20070175821
Publication date
Aug 2, 2007
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Composite polyamide reverse osmosis membrane and method of producin...
Publication number
20060219628
Publication date
Oct 5, 2006
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Selective membrane having a high fouling resistance
Publication number
20030121844
Publication date
Jul 3, 2003
Ja-Young Koo
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL