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USPTO Patent Rankings Data through Dec 31, 2025
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Charles J. Ruff — 20 Patents

ExxonMobil: 20 patents #520 of 10,161Top 6%
Houston, TX: #1,002 of 21,073 inventorsTop 5%
Texas: #6,926 of 125,132 inventorsTop 6%
Overall (All Time): #214,803 of 4,157,543Top 6%
20 Patents All Time
Charles J. Ruff has been granted 20 US patents while listed as an inventor at ExxonMobil. The first was granted in 2000 and the most recent in November 2019. Charles J. Ruff ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list Charles J. Ruff in Houston, TX, US.

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10465022 Ethylene-propylene copolymeric compositions with long methylene sequence lengths Mun Fu Tse, Jo Ann M. Canich, Daniel L. Bilbao, Carlos U. DeGracia, Ian C. Stewart 2019-11-05 $157,518,000
10100183 Propylene polymers Jeanne Marie MacDonald, Antonios K. Doufas, Jerome Sarrazin, William M. Ferry, Rahul R. Kulkarni +2 more 2018-10-16 $175,709,000
9796645 Poly alpha olefin compositions Craig J. Emett, Mark P. Hagemeister, Wenning W. Han, Bruce A. Harrington, Phillip T. Matsunaga +2 more 2017-10-24 $129,352,000
9657122 Ethylene-propylene copolymeric compositions with long methylene sequence lengths Mun Fu Tse, Jo Ann M. Canich, Daniel L. Bilbao, Carlos U. DeGracia, Ian C. Stewart 2017-05-23 $257,436,000
9399746 Poly alpha olefin compositions Craig J. Emett, Mark P. Hagemeister, Bruce A. Harrington, Phillip T. Matsunaga, Pramod J. Nandapurkar +1 more 2016-07-26 $300,772,000
9382411 Propylene polymers Jeanne Marie MacDonald, Antonios K. Doufas, Jerome Sarrazin, William Michael Farry, Rahul Ravindra Kulkami +2 more 2016-07-05 $123,264,000
9365788 Process to produce improved poly alpha olefin compositions Craig J. Emett, Mark P. Hagemeister, Bruce A. Harrington, Chon-Yie Lin, Phillip T. Matsunaga +1 more 2016-06-14 $124,251,000
9273163 Hydrosilation of vinyl-terminated macromonomers Donna J. Crowther, Man Kit Ng, Patrick Brant, Jacqueline A. Lovell, Carlos R. Lopez-Barron 2016-03-01 $343,518,000
9234151 Lubricating compositions Richard Wayne Martin, Douglas E. Deckman, Kevin J. Kelly, Craig J. Emett, Mark P. Hagemeister +4 more 2016-01-12 $148,788,000
9234152 High efficiency engine oil compositions Richard Wayne Martin, Douglas E. Deckman, Kevin J. Kelly, Craig J. Emett, Mark P. Hagemeister +4 more 2016-01-12 $148,788,000
9234150 Low viscosity engine oil compositions Richard Wayne Martin, Douglas E. Deckman, Kevin J. Kelly, Craig J. Emett, Mark P. Hagemeister +4 more 2016-01-12 $148,788,000
9068034 In-reactor polymer blends Kevin R. Squire, Cesar A. Garcia-Franco, Peijun Jiang 2015-06-30 $102,583,000
8940839 Diblock copolymers prepared by cross metathesis John R. Hagadorn, Renuka N. Ganesh, Patrick Brant 2015-01-27 $207,516,000
8841394 Vinyl terminated higher olefin copolymers and methods to produce thereof Donna J. Crowther, Matthew W. Holtcamp, John R. Hagadorn, George Rodriguez, Patrick Brant 2014-09-23 $137,457,000
8841397 Vinyl terminated higher olefin polymers and methods to produce thereof Matthew W. Holtcamp, Donna J. Crowther, John R. Hagadorn, Patrick Brant 2014-09-23 $137,457,000
8809456 Polyolefin compositions and methods of production thereof Mun Fu Tse, Aspy K. Mehta, Joann M. Canich, Matthew W. Holtcamp, John R. Hagadorn 2014-08-19 $164,188,000
8426659 Vinyl terminated higher olefin polymers and methods to produce thereof Matthew W. Holtcamp, Donna J. Crowther, John R. Hagadorn, Patrick Brant 2013-04-23 $63,067,000
8399724 Vinyl terminated higher olefin copolymers and methods to produce thereof Donna J. Crowther, Matthew W. Holtcamp, John R. Hagadorn, George Rodriguez, Patrick Brant 2013-03-19 $65,652,000
8288480 In-reactor polymer blends Peijun Jiang, Kevin R. Squire, Cesar A. Garcia-Franco 2012-10-16 $157,765,000
6114477 Polymerization process Natalie A. Merrill, Jo Ann M. Canich, Armenag H. Dekmezian, Richard B. Pannell 2000-09-05 $379,410,000