Inventor · disambiguated record
Lap-Keung Lee
Also filed as: LEE LAP-KEUNG
23 granted patents·2 pending applications·1,409 citations·filing 1994–2016
97Inventor score
Files withHYDROCARBON TECHNOLOGIES INC10HEADWATERS HEAVY OIL LLC8LOTT ROGER K3ALBERTA OIL SANDS TECH1HEADWATERS TECH INNOVATION LLC1
Top patents by PatentIndex Score
25 records- 0198US9605215B2Systems for hydroprocessing heavy oilHEADWATERS HEAVY OIL LLC·Filed 2013·Granted Mar 28, 2017·39 cites·49 claims
- 0298US6190542B1Catalytic multi-stage process for hydroconversion and refining hydrocarbon feedsHYDROCARBON TECHNOLOGIES INC·Filed 1999·Granted Feb 20, 2001·245 cites·22 claims
- 0397US8431016B2Methods for hydrocracking a heavy oil feedstock using an in situ colloidal or molecular catalyst and recycling the colloidal or molecular catalystLOTT ROGER K·Filed 2010·Granted Apr 30, 2013·22 cites·39 claims
- 0497US7449103B2Ebullated bed hydroprocessing methods and systems and methods of upgrading an existing ebullated bed systemHEADWATERS HEAVY OIL LLC·Filed 2005·Granted Nov 11, 2008·44 cites·41 claims
- 0596US8673130B2Method for efficiently operating an ebbulated bed reactor and an efficient ebbulated bed reactorHEADWATERS HEAVY OIL LLC·Filed 2013·Granted Mar 18, 2014·14 cites·43 claims
- 0696US7815870B2Ebullated bed hydroprocessing systemsHEADWATERS HEAVY OIL LLC·Filed 2008·Granted Oct 19, 2010·36 cites·25 claims
- 0795US6919065B2Supported noble metal, phase-controlled catalyst and methods for making and using the catalystHYDROCARBON TECHNOLOGIES INC·Filed 2003·Granted Jul 19, 2005·71 cites·46 claims
- 0895US5871638ADispersed anion-modified phosphorus-promoted iron oxide catalystsHYDROCARBON TECHNOLOGIES INC·Filed 1996·Granted Feb 16, 1999·121 cites·22 claims
- 0994US8440071B2Methods and systems for hydrocracking a heavy oil feedstock using an in situ colloidal or molecular catalystLOTT ROGER K·Filed 2011·Granted May 14, 2013·11 cites·52 claims
- 1094US8303802B2Methods for hydrocracking a heavy oil feedstock using an in situ colloidal or molecular catalyst and recycling the colloidal or molecular catalystLOTT ROGER K·Filed 2011·Granted Nov 6, 2012·11 cites·44 claims
- 1194US7578928B2Hydroprocessing method and system for upgrading heavy oil using a colloidal or molecular catalystHEADWATERS HEAVY OIL LLC·Filed 2005·Granted Aug 25, 2009·39 cites·44 claims
- 1294US6277895B1Skeletal iron catalyst having improved attrition resistance and product selectivity in slurry-phase synthesis processesHYDROCARBON TECHNOLOGIES INC·Filed 1999·Granted Aug 21, 2001·82 cites·16 claims
- 1394US6139723AIron-based ionic liquid catalysts for hydroprocessing carbonaceous feedsHYDROCARBON TECHNOLOGIES INC·Filed 1999·Granted Oct 31, 2000·151 cites·26 claims
- 1493US7517446B2Fixed bed hydroprocessing methods and systems and methods for upgrading an existing fixed bed systemHEADWATERS HEAVY OIL LLC·Filed 2005·Granted Apr 14, 2009·53 cites·42 claims
- 1593US6576214B2Catalytic direct production of hydrogen peroxide from hydrogen and oxygen feedsHYDROCARBON TECHNOLOGIES INC·Filed 2001·Granted Jun 10, 2003·55 cites·23 claims
- 1693US6168775B1Catalyst and process for direct catalystic production of hydrogen peroxide, (H2O2)HYDROCARBON TECHNOLOGIES INC·Filed 1998·Granted Jan 2, 2001·139 cites·21 claims
- 1793US5578197AHydrocracking process involving colloidal catalyst formed in situALBERTA OIL SANDS TECH·Filed 1994·Granted Nov 26, 1996·113 cites·43 claims
- 1888US6265451B1Skeletal iron catalyst and its preparation for Fischer-Tropsch synthesis processesHYDROCARBON TECHNOLOGIES INC·Filed 1999·Granted Jul 24, 2001·47 cites·17 claims
- 1987US5866501ADispersed anion-modified iron oxide catalysts for hydroconversion processesFiled 1996·Granted Feb 2, 1999·84 cites·19 claims
- 2079US6875409B1Catalyst and process for oxidation and removal of nitrogen oxides (NOx) from combustion gasesHYDROCARBON TECHNOLOGIES INC·Filed 2001·Granted Apr 5, 2005·27 cites·28 claims
- 2171US7615142B2Expanded bed reactor system and method for hydroprocessing wax produced by Fischer-Tropsch reaction and contaminated with solidsHEADWATERS TECH INNOVATION LLC·Filed 2006·Granted Nov 10, 2009·5 cites·20 claims
- 2270US10118146B2Systems and methods for hydroprocessing heavy oilHEADWATERS HEAVY OIL LLC·Filed 2016·Granted Nov 6, 2018·0 cites·28 claims
- 2363US9920261B2Method for upgrading ebullated bed reactor and upgraded ebullated bed reactorHEADWATERS HEAVY OIL LLC·Filed 2013·Granted Mar 20, 2018·0 cites·38 claims
- 2442US2002052423A1Skeletal iron catalyst having improved attrition resistance and product selectivity in slurry-phase synthesis processesHYDROCARBON TECHNOLOGIES INC·Filed 2001·Application pending·0 cites
- 2537US2002010087A1Skeletal iron catalyst and its preparation for fischer-tropsch synthesis processesFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Lap-Keung Lee 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 →