Vien Van Toan

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Lentigny, CH

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Patents Grantslast 30 patents

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Latent light stabilizers
- Patent number 5,597,854
- Issue date Jan 28, 1997
- Ciba-Geigy Corporation
- Jean-Luc Birbaum
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Photographic recording material containing a UV absorber
- Patent number 5,538,840
- Issue date Jul 23, 1996
- Ciba-Geigy Corporation
- Vien Van Toan
- C07 - ORGANIC CHEMISTRY