Inventor · disambiguated record
Jinhua Duan
Also filed as: DUAN JINHUA
9 granted patents·1 pending application·16 citations·filing 2013–2024
80Inventor score
Top patents by PatentIndex Score
10 records- 0182USD1030304SBackpackZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2022·Granted Jun 11, 2024·8 cites·1 claims
- 0277US9520868B2Power transistor driving circuits and methods for switching mode power suppliesBCD SEMICONDUCTOR MFG LTD·Filed 2013·Granted Dec 13, 2016·4 cites·8 claims
- 0366USD1029501STrolley caseZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2022·Granted Jun 4, 2024·3 cites·1 claims
- 0454USD1062218SSatchelZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2022·Granted Feb 18, 2025·1 cites·1 claims
- 0553US12449089B2One-step locking standZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2024·Granted Oct 21, 2025·0 cites·18 claims
- 0653US11822213B1Softbox and substrate thereofZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2022·Granted Nov 21, 2023·0 cites·20 claims
- 0752US11982432B2Light emitting module for spotlight and spotlightZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2022·Granted May 14, 2024·0 cites·14 claims
- 0851US12442482B2Quick connection structureZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2022·Granted Oct 14, 2025·0 cites·20 claims
- 0945US11821614B2Photographic lamp and lighting assemblyZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2022·Granted Nov 21, 2023·0 cites·20 claims
- 1040US2023184405A1Flat lamp and lighting module thereofZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT CO LTD·Filed 2022·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →