Inventor · disambiguated record
Zhiwen Chang
Also filed as: CHANG ZHIWEN
4 granted patents·1 pending application·3 citations·filing 2010–2023
59Inventor score
Files withHUAWEI TECH CO LTD5
Top patents by PatentIndex Score
5 records- 0188US11128384B2Fiber amplifier and gain adjustment method for fiber amplifierHUAWEI TECH CO LTD·Filed 2020·Granted Sep 21, 2021·3 cites·14 claims
- 0262US11671179B2Fiber amplifier and gain adjustment method for fiber amplifierHUAWEI TECH CO LTD·Filed 2021·Granted Jun 6, 2023·0 cites·19 claims
- 0354US2024079842A1Optical amplifier, optical signal amplification method, gain adjustment method of optical amplifier, and systemHUAWEI TECH CO LTD·Filed 2023·Application pending·0 cites
- 0444US12470291B2Fault detection method for optical switching apparatus, network device, and systemHUAWEI TECH CO LTD·Filed 2023·Granted Nov 11, 2025·0 cites·20 claims
- 0530US8380070B2Upgrading method, system and apparatus of low-density wavelength division multiplexing systemHUAWEI TECH CO LTD·Filed 2010·Granted Feb 19, 2013·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →