Chang-Qing Xu

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Dundas, CA

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus of optical transmitters and receivers operating in long w...
- Patent number 11,841,599
- Issue date Dec 12, 2023
- McMaster University
- Chang-qing Xu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Mid-infrared wavelength optical transmitter and receiver
- Patent number 11,815,783
- Issue date Nov 14, 2023
- McMaster University
- Chang-qing Xu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Speckle reduced laser projection with color gamut optimization
- Patent number 10,712,640
- Issue date Jul 14, 2020
- McMaster University
- Qianli Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical sensor and system
- Patent number 7,340,119
- Issue date Mar 4, 2008
- McMaster University
- Chang-Qing Xu
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
LASER APPARATUS AND METHOD
- Publication number 20230128226
- Publication date Apr 27, 2023
- McMaster University
- Chang-qing Xu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
APPARATUS OF OPTICAL TRANSMITTERS AND RECEIVERS OPERATING IN LONG W...
- Publication number 20220197109
- Publication date Jun 23, 2022
- McMaster University
- Chang-qing Xu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MEASURING CONCENTRATIONS OF MIXED GASES AT AN ENDPOINT
- Publication number 20220196602
- Publication date Jun 23, 2022
- ROMET LIMITED
- CHANG QING XU
- G08 - SIGNALLING
Information Patent Application
MID-INFRARED WAVELENGTH OPTICAL TRANSMITTER AND RECEIVER
- Publication number 20210141282
- Publication date May 13, 2021
- McMaster University
- Chang-qing Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SPECKLE REDUCED LASER PROJECTION WITH COLOR GAMUT OPTIMIZATION
- Publication number 20190361327
- Publication date Nov 28, 2019
- McMaster University
- Qianli Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE