Changwu XU

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Submarine optical cable system
- Patent number 12,292,611
- Issue date May 6, 2025
- HMN Technologies Co., Limited
- Changwu Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Submarine network device
- Patent number 11,955,764
- Issue date Apr 9, 2024
- HMN Technologies Co., Limited
- Changwu Xu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Submarine cable fault determining method and apparatus
- Patent number 11,265,080
- Issue date Mar 1, 2022
- HMN Technologies Co., Limited
- Changwu Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reconfigurable optical add-drop multiplexer apparatus
- Patent number 9,762,348
- Issue date Sep 12, 2017
- Huawei Marine Networks Co., Ltd.
- Wendou Zhang
- G02 - OPTICS
Information Patent Grant
Communications device and method
- Patent number 9,705,593
- Issue date Jul 11, 2017
- Huawei Marine Networks Co., Ltd.
- Wendou Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Submarine Optical Cable System
- Publication number 20220308301
- Publication date Sep 29, 2022
- HMN SMART CO., LIMITED
- Changwu Xu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SUBMARINE CABLE FAULT DETERMINING METHOD AND APPARATUS
- Publication number 20210218469
- Publication date Jul 15, 2021
- HUAWEI MARINE NETWORKS CO., LTD.
- Changwu XU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CABLE ACCESSORY DEVICE AND SUBMARINE CABLE ACCESSORY SYSTEM
- Publication number 20210116492
- Publication date Apr 22, 2021
- HUAWEI MARINE NETWORKS CO., LTD.
- Fei XU
- G01 - MEASURING TESTING
Information Patent Application
SUBMARINE NETWORK DEVICE
- Publication number 20210028591
- Publication date Jan 28, 2021
- HUAWEI MARINE NETWORKS CO., LTD.
- Changwu XU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SUBMARINE NETWORK DEVICE AND SUBMARINE CABLE SYSTEM
- Publication number 20210021336
- Publication date Jan 21, 2021
- HUAWEI MARINE NETWORKS CO., LTD.
- Yan WANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
RECONFIGURABLE OPTICAL ADD-DROP MULTIPLEXER APPARATUS
- Publication number 20160261360
- Publication date Sep 8, 2016
- HUAWEI MARINE NETWORKS CO., LTD.
- Wendou ZHANG
- G02 - OPTICS
Information Patent Application
COMMUNICATIONS DEVICE AND METHOD
- Publication number 20150318926
- Publication date Nov 5, 2015
- HUAWEI MARINE NETWORKS CO., LTD.
- Wendou ZHANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SCHEDULING METHOD, APPARATUS, AND SYSTEM FOR AVOIDING DUAL-END MONI...
- Publication number 20140010531
- Publication date Jan 9, 2014
- HUAWEI MARINE NETWORKS CO., LTD.
- Xiaobo HU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Person

Patents Grantslast 30 patents

Submarine optical cable system

Submarine network device

Submarine cable fault determining method and apparatus

Reconfigurable optical add-drop multiplexer apparatus

Communications device and method

Patents Applicationslast 30 patents

Submarine Optical Cable System

SUBMARINE CABLE FAULT DETERMINING METHOD AND APPARATUS

CABLE ACCESSORY DEVICE AND SUBMARINE CABLE ACCESSORY SYSTEM

SUBMARINE NETWORK DEVICE

SUBMARINE NETWORK DEVICE AND SUBMARINE CABLE SYSTEM

RECONFIGURABLE OPTICAL ADD-DROP MULTIPLEXER APPARATUS

COMMUNICATIONS DEVICE AND METHOD

SCHEDULING METHOD, APPARATUS, AND SYSTEM FOR AVOIDING DUAL-END MONI...