Inventor · disambiguated record
John Duff
Also filed as: DUFF II JOHN T · DUFF JOHN · DUFF JOHN C · DUFF JOHN F
9 granted patents·2 pending applications·40 citations·filing 1978–2016
84Inventor score
Top patents by PatentIndex Score
11 records- 0174US6347600B1Portable indicating and protective structure for underground utilitiesFiled 2000·Granted Feb 19, 2002·16 cites·10 claims
- 0268US9456038B2Session table frameworkSALESFORCE COM INC·Filed 2014·Granted Sep 27, 2016·2 cites·20 claims
- 0365US8650202B2Session table frameworkDUFF JOHN·Filed 2011·Granted Feb 11, 2014·2 cites·24 claims
- 0461US4240664AHydraulic jet cutting tool and methodJOY MANUFACTURING·Filed 1978·Granted Dec 23, 1980·11 cites·31 claims
- 0555US2003154130A1Method and apparatus for targeted point of purchase promotionFiled 2003·Application pending·0 cites
- 0651US10021193B2Session table frameworkSALESFORCE COM INC·Filed 2016·Granted Jul 10, 2018·0 cites·20 claims
- 0746USD419481SCombined golf ball and teeDUFF JOHN·Filed 1999·Granted Jan 25, 2000·7 cites·1 claims
- 0845US8812630B2Session table frameworkDUFF JOHN·Filed 2011·Granted Aug 19, 2014·0 cites·28 claims
- 0941US2004045038A1System and method for the synchronized activation of external devices in association with video programsFiled 2003·Application pending·0 cites
- 1027US4363258AHydraulic impactorJOY MFG CO·Filed 1980·Granted Dec 14, 1982·0 cites·7 claims
- 1121US4344353AHammerJOY MFG CO·Filed 1981·Granted Aug 17, 1982·2 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →