Inventor · disambiguated record
Douglas H. Roberts
Also filed as: ROBERTS DOUGLAS H
8 granted patents·1,054 citations·filing 1984–2007
90Inventor score
Top patents by PatentIndex Score
8 records- 0198US4619265AInteractive portable defibrillator including ECG detection circuitPHYSIO CONTROL CORP·Filed 1985·Granted Oct 28, 1986·481 cites·10 claims
- 0295US4610254AInteractive portable defibrillatorPHYSIO CONTROL CORP·Filed 1984·Granted Sep 9, 1986·387 cites·23 claims
- 0387US5773961ADynamic load controller for a batteryHEARTSTREAM INC·Filed 1996·Granted Jun 30, 1998·107 cites·92 claims
- 0475US5889388ACircuitry for dynamically controlling capacitor charge based on battery capacityHEARTSTREAM INC·Filed 1997·Granted Mar 30, 1999·59 cites·4 claims
- 0571US7408401B1Vacuum tube replacement device, circuit and systemROBERTS RETROVALVE INC·Filed 2007·Granted Aug 5, 2008·8 cites·54 claims
- 0668US7286060B2Indicators for vacuum tube replacement devicesROBERTS RETROVALVE INC·Filed 2005·Granted Oct 23, 2007·8 cites·43 claims
- 0749US7482863B2Expanded performance and functions for vacuum tube replacement devicesROBERTS RETROVALVE INC·Filed 2007·Granted Jan 27, 2009·3 cites·38 claims
- 0834US8335326B2Communication method for vacuum tube replacement devicesHERTZBERG BRETT A·Filed 2007·Granted Dec 18, 2012·1 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →