Inventor · disambiguated record
Ronald D. Ingraham
Also filed as: INGRAHAM RONALD · INGRAHAM RONALD D
17 granted patents·983 citations·filing 1986–1997
96Inventor score
Top patents by PatentIndex Score
17 records- 0198US5789915AMagnetic field energy responsive position sensing apparatus and methodNARTRON CORP·Filed 1993·Granted Aug 4, 1998·103 cites·3 claims
- 0298US4831279ACapacity responsive control circuitNARTRON CORP·Filed 1988·Granted May 16, 1989·159 cites·17 claims
- 0396US4758735ADC touch control switch circuitNARTRON CORP·Filed 1987·Granted Jul 19, 1988·98 cites·15 claims
- 0493US5861802AFifth wheel hitch coupling control systemHOLLAND HITCH CO·Filed 1997·Granted Jan 19, 1999·95 cites·22 claims
- 0592US5087825ACapacity responsive keyboardNARTRON CORP·Filed 1990·Granted Feb 11, 1992·75 cites·18 claims
- 0691US4731548ATouch control switch circuitNARTRON CORP·Filed 1986·Granted Mar 15, 1988·51 cites·19 claims
- 0790US5270645ALinear-output, temperature-stable rotational sensor including magnetic field responsive device disposed within a cavity of a flux concentratorNARTRON CORP·Filed 1991·Granted Dec 14, 1993·92 cites·17 claims
- 0888US5217280APressure sensitive signal device for vehicle brake pedalNARTRON CORP·Filed 1990·Granted Jun 8, 1993·68 cites·38 claims
- 0987US4978177ASignal mechanism responsive to force applied to vehicular brake pedal and the likeNARTRON CORP·Filed 1989·Granted Dec 18, 1990·44 cites·34 claims
- 1083US5570666AGlow plug controllerNARTRON CORP·Filed 1993·Granted Nov 5, 1996·23 cites·14 claims
- 1179US5477675AFluid power assist method and apparatusNARTRON CORP·Filed 1994·Granted Dec 26, 1995·39 cites·3 claims
- 1279US5229579AMotor vehicle heated seat controlNARTRON CORP·Filed 1990·Granted Jul 20, 1993·44 cites·10 claims
- 1377US5287831AVehicle starter and electrical system protectionNARTRON CORP·Filed 1991·Granted Feb 22, 1994·35 cites·5 claims
- 1464US5010972ACombination vehicular braking and accessory control systemNARTRON CORP·Filed 1989·Granted Apr 30, 1991·29 cites·22 claims
- 1556US5413072AVehicle starter and electrical system protectionNARTRON CORP·Filed 1993·Granted May 9, 1995·16 cites·8 claims
- 1645US4672278AAntenna relay method and apparatusNARTRON CORP·Filed 1986·Granted Jun 9, 1987·8 cites·8 claims
- 1737US5137338ACombination vehicular braking and accessory control systemNARTRON CORP·Filed 1991·Granted Aug 11, 1992·4 cites·15 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →