Fu Chen from Cupertino, CA, age 51

Composition And Method For Water Clarification
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US Patent:

58464360, Dec 8, 1998
Filed:

Feb 20, 1997
Appl. No.:

8/801401
Inventors:

Jen-Chi Chen - Morrisville PA
Fu Chen - Newtown PA
Gerald C. Walterick - Levittown PA
Stephen R. Vasconcellos - Doylestown PA
Assignee:

BetzDearborn Inc. - Trevose PA
International Classification:

B01D 2101
US Classification:

210730
Abstract:

Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The polymers are aldehyde-free and comprise copolymers of tannin and a cationic monomer. Another embodiment comprises aldehyde-free polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.

Quaternized Polyvinylamine Water Clarification Agents
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US Patent:

52924416, Mar 8, 1994
Filed:

Jan 12, 1993
Appl. No.:

8/003186
Inventors:

Jen-Chi Chen - Morrisville PA
Stephen R. Vasconcellos - Doylestown PA
Gerald C. Walterick - Levittown PA
Fu Chen - Newtown PA
Assignee:

Betz Laboratories, Inc. - Trevose PA
International Classification:

C02F 156
US Classification:

210735
Abstract:

The use of quaternized polyvinylamines for use in water clarification is disclosed.

Composition Comprising A Tannin-Containing Copolymer
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US Patent:

56841094, Nov 4, 1997
Filed:

May 20, 1994
Appl. No.:

8/246547
Inventors:

Jen-Chi Chen - Morrisville PA
Fu Chen - Newtown PA
Gerald C. Walterick - Levittown PA
Assignee:

BetzDearborn Inc. - Trevose PA
International Classification:

C08H 502
US Classification:

527400
Abstract:

Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The tannin containing polymers comprise copolymers of tannin and a cationic monomer. Another embodiment comprises tannin containing polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.

Composition And Method For Water Clarification
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US Patent:

56434626, Jul 1, 1997
Filed:

May 20, 1994
Appl. No.:

8/246544
Inventors:

Jen-Chi Chen - Morrisville PA
Fu Chen - Newtown PA
Gerald C. Walterick - Levittown PA
Stephen R. Vasconcellos - Doylestown PA
Assignee:

BetzDearborn Inc. - Trevose PA
International Classification:

B01D 2101
US Classification:

210730
Abstract:

Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The tannin containing polymers comprise copolymers of tannin and a cationic monomer. Another embodiment comprises tannin containing polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.

Composition And Method For Water Clarification
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US Patent:

59169915, Jun 29, 1999
Filed:

Jul 8, 1997
Appl. No.:

8/889855
Inventors:

Jen-Chi Chen - Morrisville PA
Fu Chen - Newtown PA
Gerald C. Walterick - Levittown PA
Assignee:

BetzDearborn Inc. - Trevose PA
International Classification:

C08H 502
US Classification:

527400
Abstract:

Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The tannin containing polymers comprise copolymers of tannin and a cationic monomer. Another embodiment comprises tannin containing polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.