Luc Grateau

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Paris, FR

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Patents Grantslast 30 patents

Information Patent Grant
Photochromic glasses which darken to a pink hue
- Patent number 5,300,465
- Issue date Apr 5, 1994
- Corning Incorporated
- Luc Grateau
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Glasses with very high index of refraction and low density
- Patent number 5,288,669
- Issue date Feb 22, 1994
- Corning France S.A.
- Luc Grateau
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Fast fading, high refractive index photochromic glass
- Patent number 5,023,209
- Issue date Jun 11, 1991
- Corning France S.A.
- Luc Grateau
- C03 - GLASS MINERAL OR SLAG WOOL