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Wind collector

US7611325 - Nov 03, 2009

Horizontal multi-blade wind turbine

US7540705 - Jun 02, 2009

Wind power system

US7528498 - May 05, 2009

Wave-flow power installation

US20090091134 - Apr 09, 2009

Wind turbine spars with jointed shear webs

US20090087318 - Apr 02, 2009

Method and system for monitoring fluid levels in wind turbine component systems

US20090081026 - Mar 26, 2009

Wind turbine

US20090081020 - Mar 26, 2009

Undershot impulse jet driven waterwheel having an automatically adjustable radial gate for optimal hydroelectric power generation and water level control

US7503744 - Mar 17, 2009

Parabolic bi-directional wind turbine assembly and omni-directional power array

US20080315592 - Dec 25, 2008

Nacelle compartment plenum for bleed air flow delivery system

US20080298950 - Dec 04, 2008

Wind power converting apparatus and method

US20080085179 - Apr 10, 2008

Utilizing alternative energy

US20080044272 - Feb 21, 2008

Apparatus and method for generating power from moving water

US7270513 - Sep 18, 2007

Fluid force taking-up and boosting apparatus

US20070207029 - Sep 06, 2007

Variable aperture velocity augmented ducted fan wind turbine

US7256512 - Aug 14, 2007

Method for optimizing the operation of a wind turbine

US20070183885 - Aug 09, 2007

Offshore windmill electric generators

US7238009 - Jul 03, 2007

Modular hydraulic or hydroelectric machine

US20070140829 - Jun 21, 2007

Fluid energy converter

US20070041823 - Feb 22, 2007

Wind energy installation comprising a concentric gearbox generator arrangement

US7179056 - Feb 20, 2007

Wind and solar power plant with variable high speed rotor trains

US7172386 - Feb 06, 2007

Systems and methods for tethered wind turbines

US20060251505 - Nov 09, 2006

Continuously variable transmission

US7074007 - Jul 11, 2006

Wind turbine provided with a controller for adjusting active annular plane area and the operating method thereof

US7071578 - Jul 04, 2006

Wind powered turbine in a tunnel

US6981839 - Jan 03, 2006

Habitat friendly, multiple impellor, wind energy extraction

US20050207881 - Sep 22, 2005

Wind powered turbine in a tunnel

US20050201855 - Sep 15, 2005

Wind driven power generator

US6923615 - Aug 02, 2005

Horizontal omni-directional windmill

US6921986 - Jul 26, 2005

Integrated vane for use in wind or water and process for producing same

US6913435 - Jul 05, 2005

Hydro turbine

US20050123390 - Jun 09, 2005

Telescoping wind turbine blade

US6902370 - Jun 07, 2005

Windmill

US20050019150 - Jan 27, 2005

Downstream wind turbine

US20040197188 - Oct 07, 2004

Turbine

US6786697 - Sep 07, 2004

Method and apparatus for wind turbine rotor load control

US20040151577 - Aug 05, 2004

Wind power plant

US6749393 - Jun 15, 2004

Wind energy converter

US6726440 - Apr 27, 2004

Retractable rotor blades for power generating wind and ocean current turbines and means for operating below set rotor torque limits

US6726439 - Apr 27, 2004

Wind turbine with tensile-type structure

US20030235493 - Dec 25, 2003

Turbine

US20030223858 - Dec 04, 2003

Coaxial wind turbine apparatus having a closeable air inlet opening

US20030133782 - Jul 17, 2003

Plant for utilizing the energy in waves

US6527504 - Mar 04, 2003

Wind power plant

US20030035725 - Feb 20, 2003

Wind machines

US20020192069 - Dec 19, 2002

Serpentine wind turbine

US20020192068 - Dec 19, 2002

Modular wind energy device

US6481957 - Nov 19, 2002

High torque impulse turbine

US6431821 - Aug 13, 2002

Straight-bladed vertical axis wind turbine

US6394745 - May 28, 2002

Horizontal axis wind turbine

US20020015639 - Feb 07, 2002

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