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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Francis C. Rix — 33 Patents

ExxonMobil: 33 patents #261 of 10,161Top 3%
League City, TX: #10 of 561 inventorsTop 2%
Texas: #3,395 of 125,132 inventorsTop 3%
Overall (All Time): #105,480 of 4,157,543Top 3%
33 Patents All Time
Francis C. Rix has been granted 33 US patents while listed as an inventor at ExxonMobil. The first was granted in 2002 and the most recent in August 2023. Francis C. Rix ranks #105,480 of 4,157,543 US inventors in our database (top 2.5%). Patent records list Francis C. Rix in League City, TX, US.

Patents per Year

Patents granted per year, 2002 to 2023Bar chart with a peak of 6 patents in 2002.peak 62002: 6 patents20022003: 2 patents2005: 2 patents20052006: 4 patents2007: 2 patents20072008: 4 patents2009: 5 patents20092013: 1 patents2020: 2 patents20202021: 1 patents2022: 3 patents20222023: 1 patents2023

Issued Patents All Time

Showing 1–25 of 33 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11739169 Solubility improvement of non-metallocene transition metal complexes in aliphatic hydrocarbon solvents John R. Hagadorn, Peijun Jiang, Charles J. Harlan, Jo Ann M. Canich 2023-08-29 $376,859,000
11390704 Ethylene copolymer blends for cross-linking applications Narayanaswami Dharmarajan, Jo Ann M. Canich, Danica L. Nguyen, Peijun Jiang, Rhutesh K. Shah 2022-07-19 $303,657,000
11352451 Dual metallocene catalyst copolymer compositions Rhutesh K. Shah, Rainer Kolb, Jo Ann M. Canich, Peijun Jiang, Periagaram S. Ravishankar +1 more 2022-06-07 $683,879,000
11299567 Lubricating oil compositions comprising dual metallocene-catalyzed bimodal copolymer compositions useful as viscosity modifiers Jingwen Zhang, Rainer Kolb, Andy H. Tsou, Periagaram S. Ravishankar, Jo Ann M. Canich 2022-04-12 $350,175,000
11021552 Toluene free silica supported single-site metallocene catalysts from in-situ supported alumoxane formation in aliphatic solvents Charles J. Harlan, Steven C. Haas, Lubin Luo, Xuan Ye 2021-06-01 $444,411,000
10822440 Dual metallocene-catalyzed bimodal copolymer compositions Andy H. Tsou, Periagaram S. Ravishankar, Jo Ann M. Canich 2020-11-03 $87,766,000
10808049 Dual metallocene catalyst copolymer compositions Rhutesh K. Shah, Rainer Kolb, Jo Ann M. Canich, Peijun Jiang, Periagaram S. Ravishankar +2 more 2020-10-20 $94,540,000
8404915 Phosphine ligand-metal compositions, complexes, and catalysts for ethylene trimerizations Laughlin G. McCullough, John F. Walzer, Jr., Lily Ackerman, Keith Hall, Gary M. Diamond +1 more 2013-03-26 $203,545,000
7638670 Methods for oligomerizing olefins David H. McConville, Lily Ackerman, Robert T. Li, Xiaohong Bei, Matthew C. Kuchta +11 more 2009-12-29 $238,270,000
7638671 Methods of oligomerizing olefins David H. McConville, Lily Ackerman, Robert T. Li, Xiaohong Bei, Matthew C. Kuchta +11 more 2009-12-29 $238,270,000
7605105 Transition metal polymerization catalysts, their synthesis and use in olefin polymerization Lisa Saunders Baugh, Enock Berluche, Paul Hinkle 2009-10-20 $352,075,000
7601666 Olefin polymerization catalyst system and process for use thereof Smita Kacker, Sudhin Datta, Rul Zhao, Vetkav R. Eswaran 2009-10-13 $1,104,981,000
7479531 Olefin polymerization catalyst system useful for polar monomers Lisa Saunders Baugh, Enock Berluche, Paul Hinkle, Donald N. Schulz 2009-01-20 $1,006,948,000
7425661 Methods for oligomerizing olefins David H. McConville, Lily Ackerman, Robert T. Li, Xiaohong Bei, Matthew C. Kuchta +11 more 2008-09-16 $339,001,000
7414006 Methods for oligomerizing olefins David H. McConville, Lily Ackerman, Robert T. Li, Xiaohong Bei, Matthew C. Kuchta +11 more 2008-08-19 $210,130,000
7351845 Transition metal polymerization catalysts, their synthesis and use in olefin polymerization Lisa Saunders Baugh, Enock Berluche, Paul Hinkle 2008-04-01 $341,348,000
7332551 Partially fluorinated naphthyl-based borates George Rodriguez, Periagaram S. Ravishankar, Matthew C. Kuchta 2008-02-19 $178,290,000
7285609 Olefin polymerization catalyst system useful for polar monomers Lisa Saunders Baugh, Enock Berluche, Paul Hinkle, Donald N. Schulz 2007-10-23 $368,886,000
7279536 Polymer production at supercritical conditions Patrick Brant, Gabor Kiss, Robert Patrick Reynolds, Jr. 2007-10-09 $389,103,000
7094848 Olefin polymerization catalyst system Paul Hinkle 2006-08-22 $241,361,000
7081543 Bridged biscyclopentadienyl ligands and method of preparation Terry J. Burkhardt, Robert T. Li, William T. Haygood, Jr. 2006-07-25 $264,722,000
7077977 Bulky borate activations George Rodriguez, Matthew C. Kuchta, John F. Walzer, Jr. 2006-07-18 $728,571,000
7045583 Olefin polymerization catalyst system Matthew C. Kuchta 2006-05-16 $355,942,000
6960676 Method of preparing group 14 bridged biscyclopentadienyl ligands Terry J. Burkhardt, Robert T. Li, William T. Haygood, Jr. 2005-11-01 $555,809,000
6838411 Olefin polymerization catalysis with aryl substituted carbenium cationic complexes 2005-01-04 $138,076,000