Inventor · disambiguated record
John Hatfield
Also filed as: HATFIELD JOHN · HATFIELD JOHN F
4 granted patents·1 pending application·21 citations·filing 1984–2015
70Inventor score
Top patents by PatentIndex Score
5 records- 0166US9827472B2Golf putter with adjustable counterbalance weightKARSTEN MFG CORP·Filed 2015·Granted Nov 28, 2017·2 cites·16 claims
- 0265US9265998B1Golf putter with adjustable counterbalance weightNIKE INC·Filed 2015·Granted Feb 23, 2016·2 cites·17 claims
- 0357US9266000B1Golf putter with adjustable counterbalance weightNIKE INC·Filed 2014·Granted Feb 23, 2016·1 cites·6 claims
- 0454US4536160AComputer keyboard educational toyHATFIELD JOHN F·Filed 1984·Granted Aug 20, 1985·16 cites·4 claims
- 0535US2016263464A1Putter selection aidNIKE INC·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →