Louis Leung

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Hong Kong, HK

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Patents Grantslast 30 patents

Information Patent Grant
Compositions of aromatic polybenzimidazoles and aromatic polyetheri...
- Patent number 4,973,630
- Issue date Nov 27, 1990
- Hoechst Celanese Corp.
- Louis Leung
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Compositions of aromatic polybenzimidazoles and aromatic polyimides
- Patent number 4,973,629
- Issue date Nov 27, 1990
- Hoechst Celanese Corp.
- David J. Williams
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...