Assignee
CHEN YI FU
TW·36 granted patents·32 pending applications·155 citations·filing 2006–2025
Top patents by PatentIndex Score
68 records- 0190US8485069B1Wrench with a ratchet deviceCHEN YI-FU·Filed 2012·Granted Jul 16, 2013·13 cites·7 claims
- 0289US8671809B1Hand tool with an adjusting structureCHEN YI-FU·Filed 2012·Granted Mar 18, 2014·12 cites·3 claims
- 0388US12337441B2Socket structureCHEN YI FU·Filed 2023·Granted Jun 24, 2025·2 cites·4 claims
- 0488US9821441B2Ratchet wrenchCHEN YI-FU·Filed 2016·Granted Nov 21, 2017·5 cites·5 claims
- 0587US8272298B2Steering device for a ratchet screwdriverCHEN YI-FU·Filed 2010·Granted Sep 25, 2012·11 cites·6 claims
- 0685US8806986B2Ratchet wrench with a bushingCHEN YI-FU·Filed 2013·Granted Aug 19, 2014·12 cites·4 claims
- 0783US9327388B2Ratchet wrench with angle adjusting mechanismCHEN YI-FU·Filed 2014·Granted May 3, 2016·10 cites·7 claims
- 0883US9199363B2Wrench deviceCHEN YI-FU·Filed 2013·Granted Dec 1, 2015·8 cites·2 claims
- 0982USD1007263SRatchet wrenchCHEN YI FU·Filed 2022·Granted Dec 12, 2023·7 cites·1 claims
- 1080US9327389B2Ratchet wrenchCHEN YI-FU·Filed 2014·Granted May 3, 2016·6 cites·5 claims
- 1179US10040177B2Socket wrenchCHEN YI FU·Filed 2016·Granted Aug 7, 2018·3 cites·12 claims
- 1278US9878437B2Coating structure for forming a toolCHEN YI-FU·Filed 2015·Granted Jan 30, 2018·3 cites·7 claims
- 1377USD959942SWrench adapterCHEN YI FU·Filed 2020·Granted Aug 9, 2022·6 cites·1 claims
- 1477US10702979B2Torque adjustment device for torque wrenchCHEN YI FU·Filed 2018·Granted Jul 7, 2020·2 cites·7 claims
- 1577US10398237B2Security display unitCHEN YI FU·Filed 2018·Granted Sep 3, 2019·2 cites·3 claims
- 1676US10093007B2Torque setting device for torque wrenchCHEN YI FU·Filed 2016·Granted Oct 9, 2018·2 cites·7 claims
- 1774US9308627B2Wrench device with a plurality of driving holesCHEN YI-FU·Filed 2012·Granted Apr 12, 2016·5 cites·4 claims
- 1874US8806987B2Steering device for a ratchet screwdriverCHEN YI-FU·Filed 2012·Granted Aug 19, 2014·5 cites·6 claims
- 1974US8720309B2Ratchet wrench having easily assembling structureCHEN YI-FU·Filed 2012·Granted May 13, 2014·5 cites·3 claims
- 2074US7331259B1Ratchet wrenchCHEN YI-FU·Filed 2006·Granted Feb 19, 2008·9 cites·1 claims
- 2172US11154967B2Ratchet wrenchCHEN YI FU·Filed 2019·Granted Oct 26, 2021·1 cites·7 claims
- 2272US9457456B2Reversible ratchet wrenchCHEN YI-FU·Filed 2014·Granted Oct 4, 2016·4 cites·3 claims
- 2371US2026001199A1Rotational tool locking deviceCHEN YI FU·Filed 2025·Application pending·0 cites
- 2469US9592594B2Socket wrench with retaining mechanismCHEN YI-FU·Filed 2014·Granted Mar 14, 2017·3 cites·7 claims
- 2569US9498869B2Socket wrenchCHEN YI-FU·Filed 2014·Granted Nov 22, 2016·4 cites·12 claims
- 2669US2019368067A1Ratchet wheel and method for making the sameCHEN YI FU·Filed 2018·Application pending·0 cites
- 2768US8939050B2Driving head with an elastic buckleCHEN YI-FU·Filed 2013·Granted Jan 27, 2015·3 cites·9 claims
- 2867US9138875B2Ratchet tool deviceCHEN YI-FU·Filed 2013·Granted Sep 22, 2015·3 cites·7 claims
- 2967US2019368066A1Ratchet wheel and method for making the sameCHEN YI FU·Filed 2018·Application pending·0 cites
- 3065US12384015B2Telescopic wrenchCHEN YI FU·Filed 2023·Granted Aug 12, 2025·0 cites·9 claims
- 3164US2024246203A1Wrench with a rotary headCHEN YI FU·Filed 2024·Application pending·0 cites
- 3264US2024189972A1Pivotal structure for driving head of wrenchCHEN YI FU·Filed 2024·Application pending·0 cites
- 3360US2017246777A1Manufacturing steps for hand toolCHEN YI-FU·Filed 2017·Application pending·0 cites
- 3459US2025375858A1Ratchet wrench assemblyCHEN YI FU·Filed 2024·Application pending·0 cites
- 3559US2025387882A1Open-end wrenchCHEN YI FU·Filed 2024·Application pending·0 cites
- 3657US2025205863A1Torque wrenchCHEN YI FU·Filed 2023·Application pending·0 cites
- 3757US2022143804A1Pivotal structure for driving head of wrenchCHEN YI FU·Filed 2022·Application pending·0 cites
- 3856US11161223B2Socket positioning device of ratchet wrenchCHEN YI FU·Filed 2019·Granted Nov 2, 2021·0 cites·5 claims
- 3955US11484994B2Securing device for securing press unit to driving member of ratchet wrenchCHEN YI FU·Filed 2019·Granted Nov 1, 2022·0 cites·3 claims
- 4055US2022241939A1Wrench with a rotary headCHEN YI FU·Filed 2022·Application pending·0 cites
- 4155US2025042005A1Multi-segment bendable jointCHEN YI FU·Filed 2023·Application pending·0 cites
- 4254US2010043604A1Ratchet wrench having easily assembling structureCHEN YI-FU·Filed 2009·Application pending·0 cites
- 4353US10632597B2Foldable handle for a hand toolCHEN YI FU·Filed 2018·Granted Apr 28, 2020·0 cites·5 claims
- 4453US2024217072A1Ratchet ringCHEN YI FU·Filed 2023·Application pending·0 cites
- 4552US2024149408A1Hand tool with angle adjusting mechanismCHEN YI FU·Filed 2022·Application pending·0 cites
- 4651US2016059390A1Control device for ratchet wrenchCHEN YI-FU·Filed 2014·Application pending·0 cites
- 4751US2009151507A1Ratchet wheel of a wrench for two size workpiecesCHEN YI-FU·Filed 2007·Application pending·0 cites
- 4851US2020165740A1Steps for making index on a toolCHEN YI FU·Filed 2018·Application pending·0 cites
- 4950US9662772B2Ratchet wrenchCHEN YI-FU·Filed 2015·Granted May 30, 2017·0 cites·4 claims
- 5050US2015224631A1Ratchet wrenchCHEN YI-FU·Filed 2014·Application pending·0 cites
Showing the top 50 of 68 patent records by PatentIndex Score.
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