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William H. Gates III
Roderick A Hyde, William H Gates III, Muriel Y Ishikawa, Jordin T Kare, Nathan P Myhrvold, Clarence T Tegreene, Thomas A Weaver, Charles Whitmer, Lowell L Wood Jr, Victoria Y H Wood: Electromagnetic engine. Searete, Workman Nydegger, November 24, 2009: US07622814 (18 worldwide citation)

An engine includes a piston slidably disposed in a cylinder with a closed end. The engine further includes a converter operable with the piston to convert mechanical energy of the piston to electrical energy in the converter in a stroke and convert electrical energy of the converter to mechanical en ...


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William H. Gates III
Roderick A Hyde, William H Gates III, Muriel Y Ishikawa, Jordin T Kare, Nathan P Myhrvold, Clarence T Tegreene, Thomas A Weaver, Charles Whitmer, Lowell L Wood Jr, Victoria Y H Wood: Opposed piston electromagnetic engine. The Invention Science Fund I, Workman Nydegger, May 31, 2011: US07950356 (9 worldwide citation)

In an embodiment, an internal combustion engine includes a first cylinder having a first piston and a second piston slidably disposed therein, an intake port arranged to admit a reactant into the first cylinder between the first and second pistons, and an exhaust port axially spaced from the intake ...


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William H. Gates III
Roderick A Hyde, William H Gates III, Muriel Y Ishikawa, Jordin T Kare, Nathan P Myhrvold, Clarence T Tegreene, Thomas A Weaver, Charles Whitmer, Lowell L Wood Jr, Victoria Y H Wood: Free piston electromagnetic engine. The Invention Fund I, Workman Nydegger, August 17, 2010: US07777357 (9 worldwide citation)

An engine includes a cylinder having two ends, a piston slidably disposed in the cylinder and a converter operable with the piston to convert mechanical energy of the piston from and to electrical energy.


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William H. Gates III
Roderick A Hyde, William H Gates III, Muriel Y Ishikawa, Jordin T Kare, Nathan P Myhrvold, Clarence T Tegreene, Thomas A Weaver, Charles Whitmer, Lowell L Wood Jr, Victoria Y H Wood: Free piston electromagnetic engine. The Invention Science Fund I, Workman Nydegger, October 18, 2011: US08037852 (2 worldwide citation)

Methods of operating an internal combustion engine are disclosed that may include a first piston slidably disposed in a first cylinder having a first and a second closed end, and a first converter operable with the first cylinder. The first converter may be configured to convert mechanical energy to ...


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William H. Gates III
Roderick A Hyde, William H Gates III, Muriel Y Ishikawa, Jordin T Kare, Nathan P Myhrvold, Clarence T Tegreene, Thomas A Weaver, Charles Whitmer, Lowell L Wood JR, Victoria YH Wood: Opposed piston electromagnetic engine. Searete a liability corporation of the State of Delaware, Searete, Clarence T Tegreene, April 9, 2009: US20090090334-A1

An engine includes a cylinder having a two pistons slidably disposed therein, a port arranged to admit a reactant into the cylinder between the two pistons, and a converter operable with at least one piston to convert mechanical energy of the piston to electrical energy.


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