David C. TANG

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Charenton-le-pont, FR

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Patents Grantslast 30 patents

Information Patent Grant
Method for evaluating the vision of an individual in predefined bri...
- Patent number 10,674,903
- Issue date Jun 9, 2020
- Essilor International
- David Tang
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Ophthalmic lens centring-blocking apparatus
- Patent number 10,306,119
- Issue date May 28, 2019
- Essilor International
- David C Tang
- G02 - OPTICS
Information Patent Grant
Ophthalmic-lens holder
- Patent number 9,751,184
- Issue date Sep 5, 2017
- Essilor International
- Bernard Brechemier
- B24 - GRINDING POLISHING
Information Patent Grant
Method of determining at least one refraction characteristic of an...
- Patent number 9,052,253
- Issue date Jun 9, 2015
- Essilor International (Compagnie Generale d'Optique)
- Stephane Boutinon
- G01 - MEASURING TESTING
Information Patent Grant
Method for shaping an ophthalmic lens for eyeglasses
- Patent number 8,747,187
- Issue date Jun 10, 2014
- Essilor International (Compagnie Generale d'Optique)
- Cédric Lemaire
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
SYSTEMS AND METHODS FOR VISION TESTING
- Publication number 20210290051
- Publication date Sep 23, 2021
- Essilor International
- David TANG
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD FOR EVALUATING THE VISION OF AN INDIVIDUAL IN PREDEFINED BRI...
- Publication number 20180325369
- Publication date Nov 15, 2018
- Essilor International
- David TANG
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
OPHTHALMIC LENS CENTRING-BLOCKING APPARATUS
- Publication number 20170163857
- Publication date Jun 8, 2017
- Essilor International (Compagnie Generale D Optique)
- David C. TANG
- G02 - OPTICS
Information Patent Application
OPHTHALMIC-LENS HOLDER
- Publication number 20140038500
- Publication date Feb 6, 2014
- ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
- Bernard Brechemier
- G02 - OPTICS
Information Patent Application
METHOD OF DETERMINING AT LEAST ONE REFRACTION CHARACTERISTIC OF AN...
- Publication number 20130235370
- Publication date Sep 12, 2013
- ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
- Stephane Boutinon
- G01 - MEASURING TESTING
Information Patent Application
METHOD FOR SHAPING AN OPHTHALMIC LENS FOR EYEGLASSES
- Publication number 20110256804
- Publication date Oct 20, 2011
- ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
- Cédric LEMAIRE
- B24 - GRINDING POLISHING