Inventor · disambiguated record
John J. Campbell
Also filed as: CAMPBELL JOHN J
12 granted patents·108 citations·filing 1975–2016
90Inventor score
Top patents by PatentIndex Score
12 records- 0180US4092878AFloating carrier retention for a planetary gearsetCATERPILLAR TRACTOR CO·Filed 1976·Granted Jun 6, 1978·29 cites·12 claims
- 0277US7725448B2Method and system for disjunctive single index accessIBM·Filed 2007·Granted May 25, 2010·8 cites·6 claims
- 0377US4069886AAuxiliary hydrostatic front wheel drive systemCATERPILLAR TRACTOR CO·Filed 1976·Granted Jan 24, 1978·24 cites·2 claims
- 0475US9519649B2Free space management in a databaseIBM·Filed 2013·Granted Dec 13, 2016·3 cites·12 claims
- 0570US9892145B2Free space management in a databaseIBM·Filed 2016·Granted Feb 13, 2018·1 cites·18 claims
- 0669US7644063B2Apparatus, system, and method for ensuring query execution plan stability in a database management systemIBM·Filed 2007·Granted Jan 5, 2010·6 cites·18 claims
- 0761US4104933APlanet gear positioning and retaining mechanismCATERPILLAR TRACTOR CO·Filed 1976·Granted Aug 8, 1978·15 cites·10 claims
- 0856US10585870B2Free space management in a databaseIBM·Filed 2016·Granted Mar 10, 2020·0 cites·15 claims
- 0943US3960061AMounting arrangement for a hydraulic motorCATERPILLAR TRACTOR CO·Filed 1975·Granted Jun 1, 1976·8 cites·8 claims
- 1040US10929370B2Index maintenance management of a relational database management systemIBM·Filed 2016·Granted Feb 23, 2021·0 cites·20 claims
- 1138US4142600AControl system for auxiliary front wheel driveCATERPILLAR TRACTOR CO·Filed 1977·Granted Mar 6, 1979·6 cites·8 claims
- 1229US5234214ATennis ball pouch and holderSEXTON LAYON A·Filed 1992·Granted Aug 10, 1993·8 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →