Michel Frigoli

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Marseilles, FR

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Patents Grantslast 30 patents

Information Patent Grant
Photochromic naphtho [2,1-b]pyran compounds contain...
- Patent number 6,312,811
- Issue date Nov 6, 2001
- Essilor International Compagnie Generale d'Optique
- Michel Frigoli
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photochromic [3H]naphtho[2,1-b]pyra...
- Patent number 6,281,366
- Issue date Aug 28, 2001
- Essilor International Compagnie Generale d'Optique
- Michel Frigoli
- C07 - ORGANIC CHEMISTRY