Inventor · disambiguated record
Patrick J. Keegan
Also filed as: KEEGAN PATRICK · KEEGAN PATRICK J
14 granted patents·1 pending application·674 citations·filing 1979–2004
94Inventor score
Files withENERGY SAVINGS INC6RHEEM MFG CO4TELEDYNE IND3KONINK PHILPS ELECTRONICS NV1SCHLESINGER ROBERT J1
Top patents by PatentIndex Score
15 records- 0193US5925990AMicroprocessor controlled electronic ballastENERGY SAVINGS INC·Filed 1997·Granted Jul 20, 1999·202 cites·32 claims
- 0293US5602670AOptical data receiver employing a solar cell resonant circuit and method for remote optical data communicationRHEEM MFG CO·Filed 1995·Granted Feb 11, 1997·163 cites·28 claims
- 0388US5973455AElectronic ballast with filament cut-outENERGY SAVINGS INC·Filed 1998·Granted Oct 26, 1999·82 cites·15 claims
- 0477US6023132AElectronic ballast deriving auxilliary power from lamp outputENERGY SAVINGS INC·Filed 1998·Granted Feb 8, 2000·44 cites·12 claims
- 0576US4361274AElectronic temperature controlTELEDYNE IND·Filed 1980·Granted Nov 30, 1982·29 cites·2 claims
- 0674US4663613AProtective system for hot tub water and power supplyTELEDYNE IND·Filed 1985·Granted May 5, 1987·38 cites·19 claims
- 0772US4421270AElectronic temperature controlTELEDYNE IND·Filed 1981·Granted Dec 20, 1983·26 cites·3 claims
- 0868US5936357AElectronic ballast that manages switching frequencies for extrinsic purposesENERGY SAVINGS INC·Filed 1998·Granted Aug 10, 1999·36 cites·25 claims
- 0958US6600960B1Boiler system ignition sequence detector and associated methods of protecting boiler systemsRHEEM MFG CO·Filed 2000·Granted Jul 29, 2003·7 cites·6 claims
- 1058US5789866AElectronic ballast with reversely wound filament windingENERGY SAVINGS INC·Filed 1997·Granted Aug 4, 1998·20 cites·6 claims
- 1154US5982113AElectronic ballast producing voltage having trapezoidal envelope for instant start lampsENERGY SAVINGS INC·Filed 1997·Granted Nov 9, 1999·13 cites·5 claims
- 1249US6507761B1Boiler system ignition sequence detector and associated methods of protecting boiler systemsRHEEM MFG CO·Filed 2000·Granted Jan 14, 2003·3 cites·12 claims
- 1342US4332164ABTU MeterSCHLESINGER ROBERT J·Filed 1979·Granted Jun 1, 1982·9 cites·5 claims
- 1432US6122567ABoiler system ignition sequence detector and associated methods of protecting boiler systemsRHEEM MFG CO·Filed 1997·Granted Sep 19, 2000·2 cites·17 claims
- 1530US2007262734A1Filament Cutout CircuitKONINK PHILPS ELECTRONICS NV·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →