Assignee
RICARDO INC
US13 patents
Top patents by PatentIndex Score
US6477997B1Nov 12, 2002
Apparatus for controlling the operation of a valve in an internal combustion engine
RICARDO INC42 citations93
US7454285B2Nov 18, 2008
Optimized flex fuel powertrain
RICARDO INC30 citations92
US7036465B2May 2, 2006
Two-stroke and four-stroke switching mechanism
RICARDO INC45 citations87
US7421981B2Sep 9, 2008
Modulated combined lubrication and control pressure system for two-stroke/four-stroke switching
RICARDO INC12 citations84
US6227154B1May 8, 2001
Valvegear for engines of reciprocating piston type
RICARDO INC26 citations84
US6964157B2Nov 15, 2005
Exhaust emission control system and method for removal and storage of vehicle exhaust gas nitrogen oxides during cold operation
RICARDO INC23 citations82
US7668704B2Feb 23, 2010
Apparatus and method for compressor and turbine performance simulation
RICARDO INC37 citations81
US7086280B2Aug 8, 2006
Aeration sensing device
RICARDO INC7 citations70
US10780395B2Sep 22, 2020
Pollutant treatment process and apparatus
RICARDO INC2 citations69
US9206862B2Dec 8, 2015
Enhanced dual clutch transmission
RICARDO INC5 citations65
US7137381B1Nov 21, 2006
Indirect variable valve actuation for an internal combustion engine
RICARDO INC5 citations54
US6220212B1Apr 24, 2001
Automotive valve rocker arms
RICARDO INC6 citations54
US6883477B2Apr 26, 2005
Apparatus for deactivating an engine valve
RICARDO INC0 citations42