Inventor · disambiguated record
John F. Hart
Also filed as: HART JOHN F · HART JOHN FREDERICK · HART JR JOHN FELIX
10 granted patents·2 pending applications·208 citations·filing 1976–2022
89Inventor score
Top patents by PatentIndex Score
12 records- 0195US9454947B1Guitar having detachable neckHART PHILIP·Filed 2016·Granted Sep 27, 2016·14 cites·16 claims
- 0291US5794562APoultry breeder pan feeding system and pan feeder assembly thereforBIG DUTCHMAN INC·Filed 1997·Granted Aug 18, 1998·76 cites·20 claims
- 0384US5406907AControlled pan feeder system for poultryBIG DUTCHMAN INC·Filed 1993·Granted Apr 18, 1995·71 cites·15 claims
- 0477USD249387SFolding violinHART JOHN F·Filed 1976·Granted Sep 12, 1978·15 cites·1 claims
- 0572US9275545B2System and method for monitoring vehicle traffic and controlling traffic signalsHART JR JOHN FELIX·Filed 2014·Granted Mar 1, 2016·9 cites·18 claims
- 0659US12497574B2Microwave extraction of essential oilsHART JOHN F·Filed 2022·Granted Dec 16, 2025·0 cites·29 claims
- 0757US11702615B1Microwave extraction of essential oilsCHEMTECH SERVICES INC·Filed 2022·Granted Jul 18, 2023·0 cites·25 claims
- 0856USD293704SVehicle-mounted sprayer tankC DAX SYSTEMS LTD·Filed 1985·Granted Jan 12, 1988·10 cites·1 claims
- 0952US2024003784A1Direct measurement of composition in chemical processing equipment to optimize process variablesCHEMTECH SERVICES INC·Filed 2022·Application pending·0 cites
- 1044US5964184AContinuous operating distribution hopperBIG DUTCHMAN INC·Filed 1998·Granted Oct 12, 1999·13 cites·26 claims
- 1138US2001013517A1TankFiled 2001·Application pending·0 cites
- 1227USD327941SVehicle mounted sprayer tankC DAX SYSTEMS LTD·Filed 1990·Granted Jul 14, 1992·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →