Assignee
US ENVIRONMENT
US133 patents
Top patents by PatentIndex Score
US6719080B1Apr 13, 2004
Hydraulic hybrid vehicle
US ENVIRONMENT206 citations99
US6651432B1Nov 25, 2003
Controlled temperature combustion engine
US ENVIRONMENT197 citations99
US6301888B1Oct 16, 2001
Low emission, diesel-cycle engine
US ENVIRONMENT226 citations99
US7456509B2Nov 25, 2008
Methods of operating a series hybrid vehicle
US ENVIRONMENT62 citations98
US6202416B1Mar 20, 2001
Dual-cylinder expander engine and combustion method with two expansion strokes per cycle
US ENVIRONMENT90 citations98
US5887674AMar 30, 1999
Continuously smooth transmission
US ENVIRONMENT123 citations98
US6857263B2Feb 22, 2005
Low emission diesel combustion system with low charge-air oxygen concentration levels and high fuel injection pressures
US ENVIRONMENT69 citations97
US6876098B1Apr 5, 2005
Methods of operating a series hybrid vehicle
US ENVIRONMENT66 citations96
US6619325B2Sep 16, 2003
Hydraulic hybrid accumulator shut-off valve
US ENVIRONMENT54 citations96
US6216462B1Apr 17, 2001
High efficiency, air bottoming engine
US ENVIRONMENT75 citations96
US6170524B1Jan 9, 2001
Fast valve and actuator
US ENVIRONMENT66 citations96
US6148656ANov 21, 2000
Real-time on-road vehicle exhaust gas modular flowmeter and emissions reporting system
US ENVIRONMENT102 citations96
US7108016B2Sep 19, 2006
Lightweight low permeation piston-in-sleeve accumulator
US ENVIRONMENT65 citations95
US4961966AOct 9, 1990
Fluorocarbon coating method
US ENVIRONMENT65 citations95
US6382014B1May 7, 2002
Real-time on-road vehicle exhaust gas modular flowmeter and emissions reporting system
US ENVIRONMENT50 citations94
US6152988ANov 28, 2000
Enhancement of electrostatic precipitation with precharged particles and electrostatic field augmented fabric filtration
US ENVIRONMENT66 citations94
US5217511AJun 8, 1993
Enhancement of electrostatic precipitation with electrostatically augmented fabric filtration
US ENVIRONMENT81 citations94
US7857082B2Dec 28, 2010
Methods of operating a series hybrid vehicle
US ENVIRONMENT16 citations93
US7374005B2May 20, 2008
Opposing pump/motors
US ENVIRONMENT41 citations93
US7237532B2Jul 3, 2007
Methods of operation for controlled temperature combustion engines using gasoline-like fuel, particularly multicylinder homogenous charge compression ignition (HCCI) engines
US ENVIRONMENT22 citations93
US7121304B2Oct 17, 2006
Low permeation hydraulic accumulator
US ENVIRONMENT27 citations93
US7047933B2May 23, 2006
Low emission fuel for use with controlled temperature combustion, direct injection, compression ignition engines
US ENVIRONMENT32 citations93
US7047741B2May 23, 2006
Methods for low emission, controlled temperature combustion in engines which utilize late direct cylinder injection of fuel
US ENVIRONMENT49 citations93
US7032385B2Apr 25, 2006
Multi-crankshaft, variable-displacement engine
US ENVIRONMENT18 citations93
US7024858B2Apr 11, 2006
Multi-crankshaft, variable-displacement engine
US ENVIRONMENT25 citations93
US7025042B2Apr 11, 2006
Methods of operation for controlled temperature combustion engines using gasoline-like fuel, particularly multicylinder homogenous charge compression ignition (HCCI) engines
US ENVIRONMENT32 citations93
US6578533B1Jun 17, 2003
Controlled homogeneous-charge, compression-ignition engine
US ENVIRONMENT42 citations93
US6301891B2Oct 16, 2001
High efficiency, air bottoming engine
US ENVIRONMENT24 citations93
US4259088AMar 31, 1981
Distributing fluids into fluidized beds
US ENVIRONMENT35 citations93
US6663781B1Dec 16, 2003
Contaminant adsorption and oxidation via the Fenton reaction
US ENVIRONMENT90 citations92
US6386154B1May 14, 2002
Pumped EGR system
US ENVIRONMENT48 citations92
US6039882AMar 21, 2000
Remediation of environmental contaminants using a metal and a sulfur-containing compound
US ENVIRONMENT55 citations92
US4902318AFeb 20, 1990
Inlet apparatus for gas-aerosol sampling
US ENVIRONMENT42 citations92
US7984783B2Jul 26, 2011
Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof
US ENVIRONMENT15 citations91
US7537075B2May 26, 2009
Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof
US ENVIRONMENT15 citations91
US7337869B2Mar 4, 2008
Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof
US ENVIRONMENT21 citations91
US7252020B2Aug 7, 2007
Vehicle drive-train including a clutchless transmission, and method of operation
US ENVIRONMENT22 citations91
US6779339B1Aug 24, 2004
Method for NOx adsorber desulfation in a multi-path exhaust system
US ENVIRONMENT118 citations91
US5236672AAug 17, 1993
Corona destruction of volatile organic compounds and toxics
US ENVIRONMENT94 citations91
US4459126AJul 10, 1984
Catalytic combustion process and system with wall heat loss control
US ENVIRONMENT57 citations91
US4226839AOct 7, 1980
Activation of calcium oxide as a sorbent
US ENVIRONMENT55 citations91
US7325465B2Feb 5, 2008
Particle matter sampling method and sampler with a virtual impactor particle concentrator
US ENVIRONMENT25 citations90
US6387652B1May 14, 2002
Method of identifying and quantifying specific fungi and bacteria
US ENVIRONMENT56 citations90
US5064526ANov 12, 1991
Method for the base-catalyzed decomposition of halogenated and non-halogenated organic compounds in a contaminated medium
US ENVIRONMENT31 citations90
US8029662B2Oct 4, 2011
Sorbent compositions and desulfurization method using the same
US ENVIRONMENT35 citations89
US6197940B1Mar 6, 2001
Method for evaluating and affecting male fertility
US ENVIRONMENT36 citations89
US4354821AOct 19, 1982
Multiple stage catalytic combustion process and system
US ENVIRONMENT32 citations89
US7148033B2Dec 12, 2006
Method for detection for total coliforms and E. coli
US ENVIRONMENT13 citations88
US7014429B2Mar 21, 2006
High-efficiency, large angle, variable displacement hydraulic pump/motor
US ENVIRONMENT19 citations88
US6306621B1Oct 23, 2001
Membrane filter agar medium for simultaneous detection of total coliforms and E. coli
US ENVIRONMENT18 citations88
Showing the top 50 of 133 patents by PatentIndex Score.