Inventor · disambiguated record
David Ellwood
Also filed as: ELLWOOD DAVID · ELLWOOD DAVID E
19 granted patents·1,544 citations·filing 1989–2005
97Inventor score
Top patents by PatentIndex Score
19 records- 0198US5481262ASystem monitoring programmable implanatable transponderBIO MEDIC DATA SYSTEMS INC·Filed 1993·Granted Jan 2, 1996·228 cites·11 claims
- 0297US5724030ASystem monitoring reprogrammable implantable transponderBIO MEDIC DATA SYSTEMS INC·Filed 1994·Granted Mar 3, 1998·309 cites·26 claims
- 0388US5532686AProgrammable transponderBIO MEDIC DATA SYSTEMS INC·Filed 1993·Granted Jul 2, 1996·262 cites·25 claims
- 0485US7052178B2Implantable inductively programmed temperature sensing transponderBIO MEDIC DATA SYSTEMS INC·Filed 2005·Granted May 30, 2006·16 cites·3 claims
- 0582US5252962ASystem monitoring programmable implantable transponderBIO MEDIC DATA SYSTEMS INC·Filed 1990·Granted Oct 12, 1993·197 cites·23 claims
- 0680US6054935ASystem monitoring programmable implantable transponderBIO MEDIC DATA SYSTEMS INC·Filed 1995·Granted Apr 25, 2000·47 cites·18 claims
- 0779US5250944AAntenna and driving circuit for transmitting and receiving images to and from a passive transponderBIO MEDIC DATA SYSTEMS INC·Filed 1990·Granted Oct 5, 1993·59 cites·23 claims
- 0876US5832999AMethod and assembly for igniting a burner assemblyMARATHON OIL CO·Filed 1996·Granted Nov 10, 1998·33 cites·19 claims
- 0975US5450901AApparatus and process for producing and reinjecting gasMARATHON OIL CO·Filed 1993·Granted Sep 19, 1995·57 cites·28 claims
- 1074US5420579AAntenna and driving circuit for transmitting and receiving signals to and from a passive transponderBIO MEDIC DATA SYSTEMS INC·Filed 1993·Granted May 30, 1995·38 cites·2 claims
- 1172US6755250B2Gas-liquid separator positionable down hole in a well boreMARATHON OIL CO·Filed 2002·Granted Jun 29, 2004·48 cites·35 claims
- 1265US6900721B1Implantable inductively programmed temperature sensing transponderBIO MEDIC DATA SYSTEMS INC·Filed 2000·Granted May 31, 2005·13 cites·19 claims
- 1363US5422636ASystem monitoring programmable implantable transponderBIO MEDIC DATA SYSTEMS INC·Filed 1993·Granted Jun 6, 1995·73 cites·9 claims
- 1460US5488990AApparatus and method for generating inert gas and heating injected gasMARATHON OIL CO·Filed 1994·Granted Feb 6, 1996·39 cites·27 claims
- 1553US5767792AMethod for calibrating a temperature sensing transponderBIO MEDIC DATA SYSTEMS INC·Filed 1995·Granted Jun 16, 1998·68 cites·10 claims
- 1643US5650778AAntenna for programming a transponderBIO MEDIC DATA SYSTEMS INC·Filed 1995·Granted Jul 22, 1997·13 cites·6 claims
- 1740US5133407AFluid injection and production apparatus and methodMARATHON OIL CO·Filed 1991·Granted Jul 28, 1992·19 cites·23 claims
- 1839US5327971APressure recorder carrier and method of useMARATHON OIL CO·Filed 1992·Granted Jul 12, 1994·15 cites·7 claims
- 1939US4947936AWell unit dynamometer installation means and methodMARATHON OIL CO·Filed 1989·Granted Aug 14, 1990·10 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →