Inventor · disambiguated record
David Spence
Also filed as: SPENCE DAVID · SPENCE DAVID L · SPENCE DAVID LANG
11 granted patents·1 pending application·58 citations·filing 2007–2018
88Inventor score
Top patents by PatentIndex Score
12 records- 0190US10060344B1Spark-ignited internal combustion engine modified for multi-fuel operationPREC COMBUSTION INC·Filed 2015·Granted Aug 28, 2018·6 cites·5 claims
- 0290US8337757B2Reactor control methodROYCHOUDHURY SUBIR·Filed 2009·Granted Dec 25, 2012·16 cites·12 claims
- 0387US10738996B1Apparatus and method for operating a gas-fired burner on liquid fuelsPREC COMBUSTION INC·Filed 2018·Granted Aug 11, 2020·3 cites·24 claims
- 0487US10001278B1Apparatus and method for operating a gas-fired burner on liquid fuelsPREC COMBUSTION INC·Filed 2015·Granted Jun 19, 2018·6 cites·26 claims
- 0585US8439990B2Reactor flow control apparatusROYCHOUDHURY SUBIR·Filed 2009·Granted May 14, 2013·9 cites·14 claims
- 0677US8387380B2Catalytic burner apparatus for Stirling EngineROYCHOUDHURY SUBIR·Filed 2009·Granted Mar 5, 2013·9 cites·15 claims
- 0774US8784515B2In-situ coke removalROYCHOUDHURY SUBIR·Filed 2010·Granted Jul 22, 2014·2 cites·15 claims
- 0872US7913484B2Catalytic burner apparatus for stirling enginePRECISION COMBUSTION INC·Filed 2007·Granted Mar 29, 2011·6 cites·6 claims
- 0970US10876472B1Spark-ignited internal combustion engine modified for multi-fuel operationPREC COMBUSTION INC·Filed 2018·Granted Dec 29, 2020·1 cites·16 claims
- 1059US9102531B2Reactor control methodROYCHOUDHURY SUBIR·Filed 2012·Granted Aug 11, 2015·0 cites·10 claims
- 1149US2009252661A1Fuel reformerROYCHOUDHURY SUBIR·Filed 2008·Application pending·0 cites
- 1239US9371991B2Apparatus and method for vaporizing a liquid fuelMASTANDUNO RICHARD·Filed 2012·Granted Jun 21, 2016·0 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when David Spence files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →