Assignee
CHEN TZU-CHUN
TW·3 granted patents·1 pending application·2 citations·filing 2014–2020
Technology mixB25B4
Top patents by PatentIndex Score
4 records- 0156US9522458B2Clamping structure for open end wrenchCHEN TZU-CHUN·Filed 2014·Granted Dec 20, 2016·2 cites·7 claims
- 0246US11292107B1Engagement structure of socket wrenchCHEN TZU CHUN·Filed 2020·Granted Apr 5, 2022·0 cites·4 claims
- 0339US10183385B2Locking structure for hand toolCHEN TZU CHUN·Filed 2016·Granted Jan 22, 2019·0 cites·4 claims
- 0435US2017050296A1Driving device for open-end wrenchCHEN TZU-CHUN·Filed 2015·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →