Yongqian Liu

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Richardson, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Modular optical medical diagnostic system
- Patent number 8,786,689
- Issue date Jul 22, 2014
- Yongqian R. Liu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
LED curing light having fresnel lenses
- Patent number 7,857,619
- Issue date Dec 28, 2010
- Yongqian Liu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Scanner system and method for mapping surface of three-dimensional...
- Patent number 7,609,875
- Issue date Oct 27, 2009
- OraMetrix, Inc.
- Yongqian Liu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
LED Curing Light having Fresnel Lenses
- Publication number 20070275344
- Publication date Nov 29, 2007
- Yongqian Liu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
High speed 3D scanner and uses thereof
- Publication number 20060269896
- Publication date Nov 30, 2006
- Yongqian Liu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
High Efficiency LED Curing Light System
- Publication number 20060199144
- Publication date Sep 7, 2006
- Yongqian Liu
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Tunable, reconfigurable optical add-drop multiplexer and a switchin...
- Publication number 20030035172
- Publication date Feb 20, 2003
- Gang (Paul) Chen
- G02 - OPTICS
Information Patent Application
Configurable dispersion management device
- Publication number 20030026533
- Publication date Feb 6, 2003
- Yochay Danziger
- G02 - OPTICS
Information Patent Application
Method and system for dispersion management with Raman amplification
- Publication number 20020118934
- Publication date Aug 29, 2002
- Yochay Danziger
- G02 - OPTICS