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Patents Grants
last 30 patents
Information
Patent Grant
Multi-wavelength light source and photonic chip
Patent number
11,990,987
Issue date
May 21, 2024
Huawei Technologies Co., Ltd.
Hongmin Chen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Receiving apparatus, sending apparatus, system and method for optic...
Patent number
8,861,959
Issue date
Oct 14, 2014
Huawei Technologies Co., Ltd.
Dafeng Tian
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method, device and system for generating and receiving a phase pola...
Patent number
8,687,979
Issue date
Apr 1, 2014
Huawei Technologies Co., Ltd.
Xiaogeng Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
PON multicast communication system, multicast management method, an...
Patent number
8,457,494
Issue date
Jun 4, 2013
Huawei Technologies Co., Ltd.
Xiaogeng Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for generating DQPSK encoding optical signal
Patent number
8,238,747
Issue date
Aug 7, 2012
Huawei Technologies Co., Ltd.
Xiaogeng Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Ranging method and system for passive optical network and optical n...
Patent number
7,925,157
Issue date
Apr 12, 2011
Huawei Technologies Co., Ltd.
Xiaogeng Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Multi-Wavelength Light Source and Photonic Chip
Publication number
20220149972
Publication date
May 12, 2022
Huawei Technologies Co., Ltd
Hongmin Chen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEM, METHOD, AND DEVICE FOR OPTICAL TRANSMISSION BASED ON POLARI...
Publication number
20120213511
Publication date
Aug 23, 2012
Huawei Technologies Co., Ltd
Zhiyu XIAO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RECEIVING APPARATUS, SENDING APPARATUS, SYSTEM AND METHOD FOR OPTIC...
Publication number
20120207475
Publication date
Aug 16, 2012
Huawei Technologies Co., Ltd
Dafeng TIAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD, DEVICE AND SYSTEM FOR GENERATING AND RECEIVING A PHASE POLA...
Publication number
20120027410
Publication date
Feb 2, 2012
Huawei Technologies Co., Ltd
Xiaogeng Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, APPARATUS AND METHOD
Publication number
20100239264
Publication date
Sep 23, 2010
Huawei Technologies Co., Ltd
Yanfu YANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS FOR GENERATING DQPSK ENCODING OPTICAL SIGNAL
Publication number
20100080569
Publication date
Apr 1, 2010
Xiaogeng XU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PON MULTICAST COMMUNICATION SYSTEM, MULTICAST MANAGEMENT METHOD, AN...
Publication number
20090274461
Publication date
Nov 5, 2009
Xiaogeng Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Ranging method and system for passive optical network and optical n...
Publication number
20080124075
Publication date
May 29, 2008
Huawei Technologies Co., Ltd.
Xiaogeng Xu
H04 - ELECTRIC COMMUNICATION TECHNIQUE