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Yu LIU
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Charenton-Le-Pont, FR
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Patents Grants
last 30 patents
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Patent Grant
Spectacle ophthalmic lens intended to be mounted on a spectacle frame
Patent number
10,379,382
Issue date
Aug 13, 2019
Essilor International
Yu Richard Liu
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
SPECTACLE OPHTHALMIC LENS INTENDED TO BE MOUNTED ON A SPECTACLE FRAME
Publication number
20180004011
Publication date
Jan 4, 2018
Essilor International (Compagnie Generale D Optique)
Yu Richard LIU
G02 - OPTICS
Information
Patent Application
METHOD FOR DYEING A PLASTIC SUBSTRATE OF HIGH REFRACTIVE INDEX AND...
Publication number
20120238660
Publication date
Sep 20, 2012
Essilor International (Compagnie Generale D Optique)
Yu Liu
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
IMPACT-RESISTANT OPHTHALMIC LENS AND ITS MANUFACTURING PROCESS
Publication number
20120147322
Publication date
Jun 14, 2012
Essilor International (Compagnie Generale D Optique)
Cedric BEGON
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL