Shi Feng

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Charenton, FR

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Patents Grantslast 30 patents

Information Patent Grant
Producing a transparent optical element comprising a substance cont...
- Patent number 7,839,576
- Issue date Nov 23, 2010
- Essilor International (Compagnie Generale d'Optique)
- Samuel Archambeau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Producing a Transparent Optical Element Comprising a Substance Cont...
- Publication number 20090262436
- Publication date Oct 22, 2009
- ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
- Samuel Archambeau
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL