Inventor · Plainsboro, NJ, US

Lap-Keung Lee

23Patents
15h-index
19Co-inventors
78Inventor score

Filing activity: Apr 11, 1994 → Nov 17, 2016

Most-cited inventions

PatentTitleAreaCited byStatus
US6190542A Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds Performing Operations; Transporting 138 Expired
US6139723A Iron-based ionic liquid catalysts for hydroprocessing carbonaceous feeds Performing Operations; Transporting 92 Expired
US5871638A Dispersed anion-modified phosphorus-promoted iron oxide catalysts Performing Operations; Transporting 71 Expired
US6168775A Catalyst and process for direct catalystic production of hydrogen peroxide, (H2O2) Performing Operations; Transporting 67 Expired
US6919065B2 Supported noble metal, phase-controlled catalyst and methods for making and using the catalyst Emerging Cross-Sectional Technologies 58 Expired
US5578197A Hydrocracking process involving colloidal catalyst formed in situ Chemistry; Metallurgy 53 Expired
US5866501A Dispersed anion-modified iron oxide catalysts for hydroconversion processes Performing Operations; Transporting 46 Expired
US6277895A Skeletal iron catalyst having improved attrition resistance and product selectivity in slurry-phase synthesis processes Chemistry; Metallurgy 43 Expired
US7517446B2 Fixed bed hydroprocessing methods and systems and methods for upgrading an existing fixed bed system Performing Operations; Transporting 40 Active
US9605215B2 Systems for hydroprocessing heavy oil Chemistry; Metallurgy 34 Active
US6576214B2 Catalytic direct production of hydrogen peroxide from hydrogen and oxygen feeds Emerging Cross-Sectional Technologies 30 Expired
US7578928B2 Hydroprocessing method and system for upgrading heavy oil using a colloidal or molecular catalyst Performing Operations; Transporting 28 Active
US7449103B2 Ebullated bed hydroprocessing methods and systems and methods of upgrading an existing ebullated bed system Chemistry; Metallurgy 27 Active
US7815870B2 Ebullated bed hydroprocessing systems Chemistry; Metallurgy 23 Active
US6265451A Skeletal iron catalyst and its preparation for Fischer-Tropsch synthesis processes Chemistry; Metallurgy 20 Expired
US8431016B2 Methods for hydrocracking a heavy oil feedstock using an in situ colloidal or molecular catalyst and recycling the colloidal or molecular catalyst Chemistry; Metallurgy 12 Active
US8673130B2 Method for efficiently operating an ebbulated bed reactor and an efficient ebbulated bed reactor Chemistry; Metallurgy 9 Active
US8303802B2 Methods for hydrocracking a heavy oil feedstock using an in situ colloidal or molecular catalyst and recycling the colloidal or molecular catalyst Chemistry; Metallurgy 8 Active
US8440071B2 Methods and systems for hydrocracking a heavy oil feedstock using an in situ colloidal or molecular catalyst Chemistry; Metallurgy 8 Active
US6875409B1 Catalyst and process for oxidation and removal of nitrogen oxides (NOx) from combustion gases Performing Operations; Transporting 7 Expired
US7615142B2 Expanded bed reactor system and method for hydroprocessing wax produced by Fischer-Tropsch reaction and contaminated with solids Chemistry; Metallurgy 5 Active
US10118146B2 Systems and methods for hydroprocessing heavy oil Chemistry; Metallurgy 0 Active
US9920261B2 Method for upgrading ebullated bed reactor and upgraded ebullated bed reactor Chemistry; Metallurgy 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.