Jen-Chi Chen

Person

Morrisville, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Composition and method for water clarification
- Patent number 5,916,991
- Issue date Jun 29, 1999
- BetzDearborn Inc.
- Jen-Chi Chen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
N, N-alkyl polyacrylamide metal treatment
- Patent number 5,908,892
- Issue date Jun 1, 1999
- BetzDearborn Inc.
- Jiangbo Ouyang
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Methods and compositions for inhibiting corrosion
- Patent number 5,866,042
- Issue date Feb 2, 1999
- BetzDearborn Inc.
- Jen-Chi Chen
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method of and composition for breaking oil and water emulsions in c...
- Patent number 5,851,433
- Issue date Dec 22, 1998
- BetzDearborn Inc.
- Paul R. Hart
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Composition and method for water clarification
- Patent number 5,846,436
- Issue date Dec 8, 1998
- BetzDearborn Inc.
- Jen-Chi Chen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Compositions and methods for water clarification
- Patent number 5,738,795
- Issue date Apr 14, 1998
- BetzDearborn Inc.
- Jen-Chi Chen
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Compositions and methods for detackifying paint spray booth water
- Patent number 5,719,224
- Issue date Feb 17, 1998
- BetzDearborn Inc.
- Howard B. Agree
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method of and composition for breaking oil and water emulsions in c...
- Patent number 5,693,216
- Issue date Dec 2, 1997
- BetzDearborn Inc.
- Paul R. Hart
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Composition comprising a tannin-containing copolymer
- Patent number 5,684,109
- Issue date Nov 4, 1997
- BetzDearborn Inc.
- Jen-Chi Chen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Paint spray booth treatment program for waterborne and/or solventbo...
- Patent number 5,660,734
- Issue date Aug 26, 1997
- BetzDearborn Inc.
- Howard B. Agree
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Methods for suppressing dust emissions
- Patent number 5,648,116
- Issue date Jul 15, 1997
- BetzDearborn Inc.
- Donald C. Roe
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Composition and method for water clarification
- Patent number 5,643,462
- Issue date Jul 1, 1997
- BetzDearborn Inc.
- Jen-Chi Chen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Methods for detackifying paint spray booth water
- Patent number 5,614,103
- Issue date Mar 25, 1997
- BetzDearborn, Inc.
- Howard B. Agree
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Coating compositions incorporating composite polymer particles
- Patent number 5,331,025
- Issue date Jul 19, 1994
- Rohm & Haas Company
- Alvin C. Lavoie
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Quaternized polyvinylamine water clarification agents
- Patent number 5,292,441
- Issue date Mar 8, 1994
- Betz Laboratories, Inc.
- Jen-Chi Chen
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Quaternized polyvinylamines for deinking loop clarification
- Patent number 5,269,942
- Issue date Dec 14, 1993
- Betz Laboratories
- John C. Harrington
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Jen-Chi Chen

Person

Patents Grantslast 30 patents

Composition and method for water clarification

N, N-alkyl polyacrylamide metal treatment

Methods and compositions for inhibiting corrosion

Method of and composition for breaking oil and water emulsions in c...

Composition and method for water clarification

Compositions and methods for water clarification

Compositions and methods for detackifying paint spray booth water

Method of and composition for breaking oil and water emulsions in c...

Composition comprising a tannin-containing copolymer

Paint spray booth treatment program for waterborne and/or solventbo...

Methods for suppressing dust emissions

Composition and method for water clarification

Methods for detackifying paint spray booth water

Coating compositions incorporating composite polymer particles

Quaternized polyvinylamine water clarification agents

Quaternized polyvinylamines for deinking loop clarification