Andrew J. Dunham

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DeKalb, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
High molecular weight zwitterionic polymers
- Patent number 6,590,051
- Issue date Jul 8, 2003
- Ondeo Nalco Company
- Phillip W. Carter
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Structurally rigid polymer coagulants as retention and drainage aid...
- Patent number 6,451,169
- Issue date Sep 17, 2002
- Nalco Chemical Company
- William J. Ward
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Structurally rigid nonionic and anionic polymers as retention and d...
- Patent number 6,444,091
- Issue date Sep 3, 2002
- Nalco Chemical Company
- William J. Ward
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
High molecular weight zwitterionic polymers
- Patent number 6,313,246
- Issue date Nov 6, 2001
- Nalco Chemical Company
- Phillip W. Carter
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Detectable cationic flocculant and method of using same in industri...
- Patent number 6,238,486
- Issue date May 29, 2001
- Nalco Chemical Company
- Andrew J. Dunham
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES

Patents Applicationslast 30 patents

Information Patent Application
Structurally rigid polymer coagulants as retention and drainage aid...
- Publication number 20020112836
- Publication date Aug 22, 2002
- William J. Ward
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE