Inventor · disambiguated record
Xinfa Du
Also filed as: DU XINFA
31 granted patents·8 pending applications·485 citations·filing 2014–2025
97Inventor score
Top patents by PatentIndex Score
39 records- 0198US11713223B2Winch, rope guide and transmission device having clutch functionT MAX HANGZHOU TECH CO LTD·Filed 2020·Granted Aug 1, 2023·7 cites·23 claims
- 0298US11414017B2Vehicle step apparatus and vehicleT MAX HANGZHOU TECH CO LTD·Filed 2020·Granted Aug 16, 2022·14 cites·23 claims
- 0398US11318889B2Vehicle, running board assembly and drive assembly for running boardT MAX HANGZHOU TECH CO LTD·Filed 2021·Granted May 3, 2022·9 cites·19 claims
- 0498US11292390B2Vehicle, running board assembly and drive assembly for running boardT MAX HANGZHOU TECH CO LTD·Filed 2020·Granted Apr 5, 2022·9 cites·20 claims
- 0598US11208043B2Vehicle and vehicle step apparatus with multiple drive motorsT MAX HANGZHOU TECH CO LTD·Filed 2020·Granted Dec 28, 2021·9 cites·20 claims
- 0698US11021108B2Vehicle and vehicle step apparatus with multiple drive motorsT MAX HANGZHOU TECH CO LTD·Filed 2020·Granted Jun 1, 2021·16 cites·16 claims
- 0798US10618472B2Vehicle and vehicle step apparatus with multiple drive motorsT MAX HANGZHOU TECH CO LTD·Filed 2019·Granted Apr 14, 2020·45 cites·20 claims
- 0898US10384614B1Vehicle, running board assembly and drive assembly for running boardT MAX HANGZHOU TECH CO LTD·Filed 2018·Granted Aug 20, 2019·43 cites·20 claims
- 0998US9688205B2Vehicle step apparatus and motor assembly thereofT-MAX (HANGZHOU) IND CO LTD·Filed 2015·Granted Jun 27, 2017·57 cites·11 claims
- 1098US9669767B2Vehicle step apparatusT-MAX (HANGZHOU) IND CO LTD·Filed 2015·Granted Jun 6, 2017·56 cites·20 claims
- 1198US9656609B2Vehicle step apparatus and motor assembly thereofT-MAX (HANGZHOU) IND CO LTD·Filed 2016·Granted May 23, 2017·52 cites·12 claims
- 1297US10682960B2Vehicle, running board assembly and drive assembly for running boardT MAX HANGZHOU TECH CO LTD·Filed 2019·Granted Jun 16, 2020·20 cites·19 claims
- 1397US10124735B2Vehicle and vehicle step apparatusT MAX HANGZHOU TECH CO LTD·Filed 2016·Granted Nov 13, 2018·24 cites·19 claims
- 1497US9669766B2Vehicle and vehicle step apparatusT-MAX (HANGZHOU) IND CO LTD·Filed 2015·Granted Jun 6, 2017·48 cites·1 claims
- 1596US10272842B2Running board device and vehicle having the sameT MAX HANGZHOU TECH CO LTD·Filed 2017·Granted Apr 30, 2019·26 cites·8 claims
- 1695US12103828B2Winch, rope guide and transmission device having clutch functionT MAX HANGZHOU TECH CO LTD·Filed 2023·Granted Oct 1, 2024·1 cites·6 claims
- 1795US11198394B2Vehicle running board apparatus and retractable device thereofT MAX HANGZHOU TECH CO LTD·Filed 2019·Granted Dec 14, 2021·13 cites·20 claims
- 1895US10821904B2Vehicle and running board device for vehicleT MAX HANGZHOU TECH CO LTD·Filed 2016·Granted Nov 3, 2020·18 cites·9 claims
- 1994US12084323B2Winch, rope guide and transmission device having clutch functionT MAX HANGZHOU TECH CO LTD·Filed 2023·Granted Sep 10, 2024·1 cites·5 claims
- 2091US11702012B2Vehicle running board apparatus and retractable device thereofT MAX HANGZHOU TECH CO LTD·Filed 2021·Granted Jul 18, 2023·2 cites·20 claims
- 2190US10479278B2Vehicle and vehicle step apparatusT MAX HANGZHOU TECH CO LTD·Filed 2016·Granted Nov 19, 2019·9 cites·12 claims
- 2288US11577654B2Vehicle, running board assembly and drive assembly for running boardT MAX HANGZHOU TECH CO LTD·Filed 2022·Granted Feb 14, 2023·1 cites·20 claims
- 2386US2025001943A1Vehicle and vehicle step apparatus with multiple drive motorsT MAX HANGZHOU TECH CO LTD·Filed 2024·Application pending·0 cites
- 2482US11584387B2Step apparatus for vehicle and vehicleT MAX HANGZHOU TECH CO LTD·Filed 2020·Granted Feb 21, 2023·1 cites·19 claims
- 2581US12410824B2Hydraulic oil-circuit system and hydraulic jackT MAX HANGZHOU TECH CO LTD·Filed 2022·Granted Sep 9, 2025·1 cites·18 claims
- 2680US2025229718A1Electric step device and vehicle having sameT MAX HANGZHOU TECH CO LTD·Filed 2025·Application pending·0 cites
- 2779US11505128B2Foot step for vehicle and vehicleT MAX HANGZHOU TECH CO LTD·Filed 2020·Granted Nov 22, 2022·1 cites·20 claims
- 2876US12017614B2Vehicle, running board assembly and drive assembly for running boardT MAX HANGZHOU TECH CO LTD·Filed 2023·Granted Jun 25, 2024·0 cites·19 claims
- 2975US12115940B2Vehicle and vehicle step apparatus with multiple drive motorsT MAX HANGZHOU TECH CO LTD·Filed 2021·Granted Oct 15, 2024·0 cites·20 claims
- 3069US12304430B2Electric step device and vehicle having sameT MAX HANGZHOU TECH CO LTD·Filed 2022·Granted May 20, 2025·0 cites·18 claims
- 3163US11881063B2Management apparatus for a vehicle device, vehicle and serverT MAX HANGZHOU TECH CO LTD·Filed 2019·Granted Jan 23, 2024·2 cites·21 claims
- 3263US2025327502A1Piston assembly and magnetorheological damper, vehicleT MAX HANGZHOU TECH CO LTD·Filed 2024·Application pending·0 cites
- 3359US2025121776A1Step deviceT MAX HANGZHOU TECH CO LTD·Filed 2024·Application pending·0 cites
- 3459US2025249833A1Electric step with locking functionT MAX HANGZHOU TECH CO LTD·Filed 2024·Application pending·0 cites
- 3558US2025108762A1Step device and vehicleT MAX HANGZHOU TECH CO LTD·Filed 2024·Application pending·0 cites
- 3655US11376918B2Adjustment device, adjustor and shock absorberT MAX HANGZHOU TECH CO LTD·Filed 2020·Granted Jul 5, 2022·0 cites·20 claims
- 3754US2025128662A1Step, step device and vehicleT MAX HANGZHOU TECH CO LTD·Filed 2023·Application pending·0 cites
- 3852US12083994B2Step mounting mechanism and motorized deviceT MAX HANGZHOU TECH CO LTD·Filed 2021·Granted Sep 10, 2024·0 cites·12 claims
- 3945US2016039346A1Vehicle step apparatus and extending and retracting device thereofT MAX HANGZHOU IND CO LTD·Filed 2014·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →