Inventor · disambiguated record
Roy Campbell
Also filed as: CAMPBELL ROY · CAMPBELL ROY L
24 granted patents·332 citations·filing 1974–2016
96Inventor score
Top patents by PatentIndex Score
24 records- 0195US4913267AVehicle disc brakes of the liquid cooled typeLUCAS INDUSTRIES LTD·Filed 1988·Granted Apr 3, 1990·59 cites·19 claims
- 0293US5012901ASelf-energizing disc brakesLUCAS IND PLC·Filed 1989·Granted May 7, 1991·45 cites·16 claims
- 0389US4653614ASelf-energizing disc brakesLUCAS IND PLC·Filed 1985·Granted Mar 31, 1987·40 cites·10 claims
- 0477US3952843ASpreading disc brake and cam actuator thereforGIRLING LTD·Filed 1974·Granted Apr 27, 1976·25 cites·11 claims
- 0575US4547967AVehicle hydraulic braking systemLUCAS IND PLC·Filed 1984·Granted Oct 22, 1985·17 cites·7 claims
- 0668US4883149AVehicle disc brakes of the liquid cooled typeLUCAS IND PLC·Filed 1988·Granted Nov 28, 1989·17 cites·21 claims
- 0762US4036210ADouble lumened catheterCAMPBELL ROY L·Filed 1975·Granted Jul 19, 1977·64 cites·4 claims
- 0858US4550810ADisc brakes for vehiclesLUCAS IND PLC·Filed 1983·Granted Nov 5, 1985·12 cites·12 claims
- 0949US4736820ASelf-energizing disc brakesLUCAS INDUSTRIES LTD·Filed 1987·Granted Apr 12, 1988·10 cites·11 claims
- 1045US4685541ASelf-energizing disc brakesLUCAS INDUSTRIES LTD·Filed 1986·Granted Aug 11, 1987·8 cites·20 claims
- 1138US4865168AVehicle disc brakes of the liquid cooled typeLUCAS IND PLC·Filed 1988·Granted Sep 12, 1989·5 cites·17 claims
- 1235US4702351ASelf-energizing disc brakesLUCAS IND PLC·Filed 1986·Granted Oct 27, 1987·4 cites·18 claims
- 1334US4862998ASelf-energizing disc brakesLUCAS IND PLC·Filed 1988·Granted Sep 5, 1989·4 cites·12 claims
- 1434US4768624ASelf-energizing disc brakes with cable assembly and cable casing thereforLUCAS INDUSTRIES LTD·Filed 1987·Granted Sep 6, 1988·4 cites·14 claims
- 1534US4488405AMaster cylinder assembly for a vehicle hydraulic braking systemLUCAS INDUSTRIES LTD·Filed 1981·Granted Dec 18, 1984·2 cites·12 claims
- 1632US4809588AHydraulic piston and cylinder assembliesLUCAS IND PLC·Filed 1987·Granted Mar 7, 1989·2 cites·12 claims
- 1732US4787482ASelf energizing disc brakesLUCAS IND PLC·Filed 1984·Granted Nov 29, 1988·3 cites·11 claims
- 1832US4768625ASelf-energizing disc brakesLUCAS INDUSTRIES LTD·Filed 1987·Granted Sep 6, 1988·3 cites·12 claims
- 1932US4676345ASelf-energizing disc brakesLUCAS IND PLC·Filed 1986·Granted Jun 30, 1987·4 cites·3 claims
- 2031US4884494APressure cylinderLUCAS IND PLC·Filed 1988·Granted Dec 5, 1989·1 cites·9 claims
- 2129USD808043SPaverCAMPBELL ROY·Filed 2016·Granted Jan 16, 2018·2 cites·1 claims
- 2229US4711327ASelf-energizing disc brakesLUCAS INDUSTRIES LTD·Filed 1986·Granted Dec 8, 1987·1 cites·7 claims
- 2328US4703836ASelf-energising disc brakes with links of different lengthsLUCAS INDUSTRIES LTD·Filed 1986·Granted Nov 3, 1987·0 cites·3 claims
- 2423US4796730ASelf-energizing disc brakesLUCAS INDUSTRIES LTD·Filed 1987·Granted Jan 10, 1989·0 cites·7 claims
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