Inventor · disambiguated record
Roland Levrai
Also filed as: LEVRAI ROLAND
40 granted patents·556 citations·filing 1976–1999
98Inventor score
Top patents by PatentIndex Score
40 records- 0197US4630711ADevice for lubricating a geartrainDBA SA·Filed 1985·Granted Dec 23, 1986·103 cites·11 claims
- 0296US4824180ABrake corrector subject to the load of a vehicleBENDIX FRANCE·Filed 1988·Granted Apr 25, 1989·106 cites·3 claims
- 0392US4117769AVacuum boosterBENDIX CORP·Filed 1976·Granted Oct 3, 1978·27 cites·6 claims
- 0490US6192685B1Master cylinder for motor vehicle electro-hydraulic braking installationBOSCH GMBH ROBERT·Filed 1998·Granted Feb 27, 2001·54 cites·13 claims
- 0589US4490102AVolumetric screw compressorDBA SA·Filed 1983·Granted Dec 25, 1984·47 cites·13 claims
- 0687US5172964AVacuum booster with electromagnetic valve controlBENDIX EUROP SERVICES TECH·Filed 1991·Granted Dec 22, 1992·35 cites·6 claims
- 0785US5425302APneumatic boosterBENDIX EUROP SERVICES TECH·Filed 1993·Granted Jun 20, 1995·35 cites·13 claims
- 0861US5176063ABrake-booster with adjustable jump and process for adjusting the jumpBENDIX EUROP SERVICES TECH·Filed 1992·Granted Jan 5, 1993·12 cites·9 claims
- 0961US4286504ADrum brake actuating deviceDBA SA·Filed 1979·Granted Sep 1, 1981·13 cites·3 claims
- 1059US4292883AWheel cylinderDBA SA·Filed 1979·Granted Oct 6, 1981·8 cites·2 claims
- 1155US4996843ATandem hydraulic pressure transmitter deviceBENDIX FRANCE·Filed 1989·Granted Mar 5, 1991·8 cites·8 claims
- 1249US4709550AHydraulic assistance deviceDBA SA·Filed 1985·Granted Dec 1, 1987·7 cites·5 claims
- 1349US4651528AHydraulic amplifier for braking systemDBA SA·Filed 1984·Granted Mar 24, 1987·6 cites·5 claims
- 1448US6186042B1Pneumatic booster with floating reaction disc and dynamically cancellable reactionBOSCH GMBH ROBERT·Filed 1999·Granted Feb 13, 2001·11 cites·9 claims
- 1547US5493949APneumatic uphill anti-runback deviceBENDIX EUROP SERVICES TECH·Filed 1993·Granted Feb 27, 1996·7 cites·2 claims
- 1643US5475978ABooster brake device with concealed travelALLIEDSIGNAL EUROP SERVICES·Filed 1993·Granted Dec 19, 1995·6 cites·6 claims
- 1742US4588363AVolumetric screw compressorDBA SA·Filed 1985·Granted May 13, 1986·7 cites·11 claims
- 1841US5848827ABraking assistance pneumatic servomotor with improved valveBOSCH SYST FREINAGE·Filed 1996·Granted Dec 15, 1998·6 cites·9 claims
- 1941US5475977ABrake-booster device with slowed hydraulic reactionALLIED SIGNAL EUROP SERV·Filed 1993·Granted Dec 19, 1995·7 cites·6 claims
- 2041US5154492ALoad sensing proportioning valveBENDIX EUROP SERVICES TECH·Filed 1991·Granted Oct 13, 1992·5 cites·10 claims
- 2140US5046314AControl device of a brake booster, applying additional force when a pressure difference between a front and rear booster chamber exceeds a pre-determined thresholdBENDIX FRANCE·Filed 1989·Granted Sep 10, 1991·7 cites·15 claims
- 2240US4978820ADevice for detecting the position of a member movable inside a stationary memberBENDIX FRANCE·Filed 1989·Granted Dec 18, 1990·7 cites·4 claims
- 2339US4671168ASingle actuator tandem brake pressure control valveBENDIX FRANCE·Filed 1986·Granted Jun 9, 1987·7 cites·8 claims
- 2438US6116141APneumatic brake booster with control chamberBOSCH SYST FREINAGE·Filed 1998·Granted Sep 12, 2000·5 cites·3 claims
- 2535US5205621ABrake-pressure reduction means for a motor vehicleBENDIX EUROP SERVICES TECH·Filed 1991·Granted Apr 27, 1993·3 cites·3 claims
- 2635US4798127ATandem brake pressure control valve with pressure-failure-compensating parallel pistonBENDIX FRANCE·Filed 1987·Granted Jan 17, 1989·3 cites·7 claims
- 2734US4484671APressure generator unit for hydraulic braking systemDBA SA·Filed 1982·Granted Nov 27, 1984·3 cites·16 claims
- 2833US4445263AMethod of preforming a booster casing element with its reinforcementDBA SA·Filed 1982·Granted May 1, 1984·1 cites·6 claims
- 2932US6109163APneumatic servomotor with dynamically variable mechanical reactionBOSCH SYST FREINAGE·Filed 1999·Granted Aug 29, 2000·2 cites·3 claims
- 3032US5878577APneumatic brake servo with an improved valveBOSCH SYST FREINAGE·Filed 1996·Granted Mar 9, 1999·2 cites·8 claims
- 3132US4984853ABraking corrector governed by the height of a vehicleBENDIX EUROP SERVICES TECH·Filed 1990·Granted Jan 15, 1991·2 cites·2 claims
- 3231US5226693AHydraulic assembly for conversion of a pressure of a brake fluidBENDIX EUROP SERVICES TECH·Filed 1992·Granted Jul 13, 1993·1 cites·1 claims
- 3331US5028094ABrake regulatorBENDIX EUROP SERVICES TECH·Filed 1990·Granted Jul 2, 1991·1 cites·4 claims
- 3431US4673223ADeceleration responsive braking correctorBENDIX FRANCE·Filed 1985·Granted Jun 16, 1987·1 cites·17 claims
- 3530US5186523ABrake compensator for a motor vehicleBENDIX EUROP SERVICES TECH·Filed 1992·Granted Feb 16, 1993·0 cites·7 claims
- 3630US5094510ALoad sensing supporting member for a suspension springBENDIX EUROP SERVICES TECH·Filed 1990·Granted Mar 10, 1992·0 cites·6 claims
- 3729US7077051B1Self-boosting pneumatic booster using a pivoting keyBOSCH GMBH ROBERT·Filed 1999·Granted Jul 18, 2006·0 cites·9 claims
- 3828US4828330ABrake corrector subject to the load of a vehicleBENDIX FRANCE·Filed 1987·Granted May 9, 1989·1 cites·4 claims
- 3927US5005914ADual brake compensatorBENDIX FRANCE·Filed 1989·Granted Apr 9, 1991·0 cites·5 claims
- 4020US5176434ABrake pressure proportioning valve with an additional valveBENDIX EUROP SERVICES TECH·Filed 1991·Granted Jan 5, 1993·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →