Heliang LIU

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Wuhan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Wavelength selective switch and optical signal transmission system
- Patent number 10,187,173
- Issue date Jan 22, 2019
- Huawei Technologies Co., Ltd.
- Heliang Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transceiver and optical communications product
- Patent number 9,692,516
- Issue date Jun 27, 2017
- Huawei Technologies Co., Ltd.
- Chuang Zhou
- G02 - OPTICS
Information Patent Grant
On-line dispersion compensation device for a wavelength division op...
- Patent number 7,221,872
- Issue date May 22, 2007
- Huawei Technologies Co., LTD.
- Heliang Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DEVICE, OPTICAL COMMUNICATION DEVICE, AND OPTICAL SWITCHING...
- Publication number 20250116830
- Publication date Apr 10, 2025
- Huawei Technologies Co., Ltd
- Zhengwei GUO
- G02 - OPTICS
Information Patent Application
Optical Communication Device
- Publication number 20250076597
- Publication date Mar 6, 2025
- Huawei Technologies Co., Ltd
- Mingran Quan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
WAVELENGTH SELECTIVE SWITCH AND OPTICAL SIGNAL TRANSMISSION SYSTEM
- Publication number 20180152259
- Publication date May 31, 2018
- Huawei Technologies Co., Ltd
- Heliang LIU
- G02 - OPTICS
Information Patent Application
OPTICAL TRANSCEIVER AND OPTICAL COMMUNICATIONS PRODUCT
- Publication number 20160323038
- Publication date Nov 3, 2016
- Huawei Technologies Co., Ltd
- Chuang ZHOU
- G02 - OPTICS
Information Patent Application
BEAM PROCESSING DEVICE, BEAM ATTENUATION AND SWITCHING DEVICE, AND...
- Publication number 20160154247
- Publication date Jun 2, 2016
- Huawei Technologies Co., Ltd
- Heliang LIU
- G02 - OPTICS
Information Patent Application
On-line dispersion compensation device for a wavelength division op...
- Publication number 20040091272
- Publication date May 13, 2004
- Heliang Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE