Inventor · disambiguated record
Qinfeng Yi
Also filed as: YI QINFENG
1 granted patent·1 pending application·0 citations·filing 2017–2021
2Inventor score
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2 records- 0123US10385903B2Metric self-tapping locking screw and the manufacturing method thereofESSENCE FASTENING SYSTEM SHANGHAI CO LTD·Filed 2017·Granted Aug 20, 2019·0 cites·3 claims
- 0223US2022196061A1Thread Rolling Screw Molten Through FrictionESSENCE FASTENING SYSTEMS SHANGHAI CO LTD·Filed 2021·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →