CHANG; Tianhai

Patent Applications and Registrations

Patent applications and USPTO patent grants for CHANG; Tianhai.The latest application filed is for "receiver, optical line terminal, and passive optical network system".

Company Profile

5.11.12

CHANG; Tianhai - Dongguan CN
Chang; Tianhai - Guangzhou CN
Chang; Tianhai - Shenzhen CN
Chang; Tianhai - Guangdong CN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Receiver, Optical Line Terminal, And Passive Optical Network System App 20220239381 - JING; Lei ; et al.	2022-07-28
Method and apparatus for spectrum defragmentation, device, and system Grant 11,381,335 - Chang July 5, 2	2022-07-05
Automatic search method for a structural mode signal of a chipless RFID tag Grant 11,295,096 - Liu , et al. April 5, 2	2022-04-05
Service Data Processing Method And Device App 20210289273 - XIANG; Junling ; et al.	2021-09-16
An Automatic Search Method for a Structural Mode Signal of a Chipless RFID Tag App 20210248329 - LIU; Xiongying ; et al.	2021-08-12
Optical amplifier apparatus, optical communications station, and optical communications system Grant 10,911,137 - Zhou , et al. February 2, 2	2021-02-02
Network protection method, network node and system Grant 10,778,570 - Yan , et al. Sept	2020-09-15
Method and Apparatus for Spectrum Defragmentation, Device, and System App 20200186273 - Chang; Tianhai	2020-06-11
Optical Amplifier Apparatus, Optical Communications Station, and Optical Communications System App 20200145098 - Zhou; Enbo ; et al.	2020-05-07
Optical fiber status detection method, optical supervisory unit, and station Grant 10,547,378 - Chang , et al. Ja	2020-01-28
Service switching system and service switching method Grant 10,200,771 - Wang , et al. Fe	2019-02-05
Optical Fiber Status Detection Method, Optical Supervisory Unit, And Station App 20180123687 - CHANG; Tianhai ; et al.	2018-05-03
Network Protection Method, Network Node and System App 20180109445 - Yan; Jun ; et al.	2018-04-19
Service Switching System and Service Switching Method App 20170359638 - Wang; Buyun ; et al.	2017-12-14
Method and device for time synchronization Grant 8,817,823 - Shen , et al. August 26, 2	2014-08-26
Method And Device For Time Synchronization App 20130121352 - SHEN; Xinyu ; et al.	2013-05-16
Upgrading method, system and apparatus of low-density wavelength division multiplexing system Grant 8,380,070 - Li , et al. February 19, 2	2013-02-19
Upgrading Method, System And Apparatus Of Low-density Wavelength Division Multiplexing System App 20100142960 - LI; Congqi ; et al.	2010-06-10
Method, apparatus and system for optical communications Grant 7,580,635 - Li , et al. August 25, 2	2009-08-25
Optical transmission module with digital adjustment and the adjusting method Grant 7,564,881 - Chang July 21, 2	2009-07-21
Method, apparatus and system for optical communications App 20070031148 - Ll; Weishi ; et al.	2007-02-08
Optical transmission module with digital adjustment and the adjusting method App 20040264518 - Chang, Tianhai	2004-12-30

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