Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Stephen C. Leviness — 24 Patents

ExxonMobil: 14 patents #819 of 10,161Top 9%
VEVelocys: 4 patents #55 of 139Top 40%
Schlumberger Technology: 4 patents #1,567 of 7,293Top 25%
SYSyntroleum: 1 patents #22 of 38Top 60%
VTVelocys Technologies: 1 patents #29 of 36Top 85%
Houston, TX: #755 of 21,073 inventorsTop 4%
Texas: #5,446 of 125,132 inventorsTop 5%
Overall (All Time): #168,038 of 4,157,543Top 5%
24 Patents All Time
Stephen C. Leviness has been granted 24 US patents while listed as an inventor at ExxonMobil. The first was granted in 1994 and the most recent in February 2022. Stephen C. Leviness ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list Stephen C. Leviness in Houston, TX, US.

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11247953 Process of removing heat Ivan Phillip Greager, Roger Allen Harris, Andre Peter Steynberg, Jasmeer Jaichland Ramlal, Dennis Parker +1 more 2022-02-15
9994763 Generation of hydrocarbon fuels having a reduced environmental impact Ivan Phillip Greager 2018-06-12
9365765 Generation of hydrocarbon fuels having a reduced environmental impact Ivan Phillip Greager 2016-06-14
9359271 Fischer-Tropsch process Francis P. Daly, Laura Richard, Sreekala Rugmini 2016-06-07
9006298 Fischer-Tropsch process Francis P. Daly, Laura Richard, Sreekala Rugmini 2015-04-14
8614158 Fischer-trospch and oxygenate synthesis catalyst activation/regeneration in a micro scale process 2013-12-24 $38,306,000
8591861 Hydrogenating pre-reformer in synthesis gas production processes Franklin D. Lomax, Jr., Rama A. Zakaria, Maxim Lyubovsky 2013-11-26 $61,158,000
8293805 Tracking feedstock production with micro scale gas-to-liquid units Moinuddin Khan, Andrew Kurkjian, Keith Massie, John Nighswander 2012-10-23 $47,982,000
7939953 Micro scale fischer-tropsch and oxygenate synthesis process startup unit Franklin D. Lomax, Jr., Maxim Lyubovsky, Christopher P. Heinrichs, Richard S. Todd 2011-05-10 $128,670,000
7419928 Fischer-Tropsch catalyst production Andrzej Malek, Horacio Trevino, Weldon K. Bell, David O. Marler 2008-09-02 $231,550,000
7361619 Fischer-Tropsch catalyst production Andrzej Malek, Horacio Trevino, Weldon K. Bell, David O. Marler 2008-04-22 $592,752,000
7314503 Process to remove nitrogen and/or carbon dioxide from methane-containing streams J. Mark Landrum, Branch Russell, Kenneth L. Agee 2008-01-01
6284807 Slurry hydrocarbon synthesis process with increased catalyst life Charles J. Mart, William C. Behrmann, Stephen J. Hsia, Daniel Ray Neskora 2001-09-04 $459,932,000
6270734 Multizone downcomer for slurry hydrocarbon synthesis process 2001-08-07 $455,001,000
6107353 Cyanide and ammonia removal from synthesis gas Russell John Koveal 2000-08-22 $228,739,000
6066679 Slurry hydrocarbon synthesis with cyclic co purge and catalyst rejuvenation Willard N. Mitchell 2000-05-23 $601,599,000
5973012 Hydrocarbon synthesis catalyst slurry rejuvenation with gas disengagement (LAW 783) William C. Behrmann 1999-10-26 $181,937,000
5962537 Multizone downcomer for slurry hydrocarbon syntheses process 1999-10-05 $199,303,000
5844005 Hydrocarbon synthesis using reactor tail gas for catalyst rejuvenation Richard F. Bauman, Charles W. DeGeorge, Rocco A. Fiato 1998-12-01 $509,413,000
5817702 Hydrocarbon synthesis catalyst slurry rejuvenation with gas disengagement William C. Behrmann 1998-10-06 $144,778,000
5817701 Slurry hydrocarbon synthesis with cyclic CO purge and catalyst rejuvenation Willard N. Mitchell 1998-10-06 $144,778,000
5811469 Slurry hydrocarbon synthesis with downcomer fed product filtration (LAW552) Charles J. Mart 1998-09-22 $97,089,000
5811363 Catalyst rejuvenation in hydrocarbon synthesis slurry with reduced slurry recontamination Willard N. Mitchell 1998-09-22 $97,089,000
5288673 Temperature control in draft tubes for catalyst rejuvenation William C. Behrmann 1994-02-22 $25,159,000