Thomas C. Shen

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Chesapeake, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Polymerizable quaternary ammonium methyl carbonates
- Patent number 4,973,639
- Issue date Nov 27, 1990
- Hoechst Celanese Corporation
- Thomas C. Shen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polymerizable quaternary ammonium methyl carbonates
- Patent number 4,910,325
- Issue date Mar 20, 1990
- Hoechst Celanese Corporation
- Thomas C. Shen
- C07 - ORGANIC CHEMISTRY