Roger Y. Leung

Person

Ellicott City, MD, US

People

Patents Grantslast 30 patents

Information Patent Grant
Production of paper and paperboard
- Patent number 6,273,998
- Issue date Aug 14, 2001
- BetzDearborn Inc.
- Lawrence Lu Kuo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Water-soluble cationic copolymers and their use as flocculants
- Patent number 5,720,888
- Issue date Feb 24, 1998
- BetzDearborn Inc.
- Lawrence Lu Kuo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Water-soluble cationic copolymers and their use as flocculants and...
- Patent number 5,700,893
- Issue date Dec 23, 1997
- BetzDearborn Inc.
- Lawrence Lu Kuo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Water-soluble cationic copolymers and their use as flocculants and...
- Patent number 5,681,912
- Issue date Oct 28, 1997
- BetzDearborn Inc.
- Lawrence Lu Kuo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Water-soluble cationic copolymers and their use as flocculants
- Patent number 5,529,699
- Issue date Jun 25, 1996
- W. R. Grace & Co.-Conn.
- Lawrence L. Kuo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of producing water-soluble cationic copolymers
- Patent number 5,516,852
- Issue date May 14, 1996
- W. R. Grace & Co.-Conn.
- Lawrence L. Kuo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Water-soluble cationic copolymers and their use as drainage retenti...
- Patent number 5,473,033
- Issue date Dec 5, 1995
- W. R. Grace & Co.-Conn.
- Lawrence L. Kuo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Roger Y. Leung

Person

Patents Grantslast 30 patents

Production of paper and paperboard

Water-soluble cationic copolymers and their use as flocculants

Water-soluble cationic copolymers and their use as flocculants and...

Water-soluble cationic copolymers and their use as flocculants and...

Water-soluble cationic copolymers and their use as flocculants

Method of producing water-soluble cationic copolymers

Water-soluble cationic copolymers and their use as drainage retenti...