Inventor · disambiguated record
Zhiwu Chang
Also filed as: CHANG ZHIWU
2 granted patents·2 pending applications·0 citations·filing 2022–2023
22Inventor score
Files withHUAWEI TECH CO LTD4
Top patents by PatentIndex Score
4 records- 0149US2023275388A1Optical fiber raw material composition, optical fiber, and optical fiber productHUAWEI TECH CO LTD·Filed 2023·Application pending·0 cites
- 0247US12092865B2Grating and grating characteristic adjustment method and deviceHUAWEI TECH CO LTD·Filed 2022·Granted Sep 17, 2024·0 cites·12 claims
- 0346US2023098573A1Optical component constituting fiber amplifier, fiber amplifier, and manufacturing methodHUAWEI TECH CO LTD·Filed 2022·Application pending·0 cites
- 0444US12445221B2Tunable optical add/drop multiplexerHUAWEI TECH CO LTD·Filed 2023·Granted Oct 14, 2025·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →