Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Gregory S. Day — 45 Patents

ExxonMobil: 44 patents #164 of 10,161Top 2%
RURamot At Tel-Aviv University: 8 patents #38 of 1,095Top 4%
Pasadena, TX: #4 of 297 inventorsTop 2%
Texas: #2,078 of 125,132 inventorsTop 2%
Overall (All Time): #64,393 of 4,157,543Top 2%
45 Patents All Time
Gregory S. Day has been granted 45 US patents while listed as an inventor at ExxonMobil. The first was granted in 2015 and the most recent in November 2025. Gregory S. Day ranks #64,393 of 4,157,543 US inventors in our database (top 1.5%). Patent records list Gregory S. Day in Pasadena, TX, US.

Issued Patents All Time

Showing 1–25 of 45 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12480033 Water soluble anionic metal-organic cages as cation capture species for scale reduction 2025-11-25
11041029 Aluminum alkyls with pendant olefins for polyolefin reactions Matthew W. Holtcamp, John R. Hagadorn, Patrick J. Palafox, Ramyaa Mathialagan, Jo Ann M. Canich 2021-06-22 $203,572,000
10717790 Catalyst composition comprising fluorided support and processes for use thereof Xuan Ye, Matthew W. Holtcamp, Laughlin G. McCullough, Jo Ann M. Canich, David F. Sanders +1 more 2020-07-21 $213,007,000
10676547 Aluminum alkyls with pendant olefins on clays Matthew W. Holtcamp, John R. Hagadorn, Patrick J. Palafox, Ramyaa Mathialagan, Jo Ann M. Canich 2020-06-09 $113,704,000
10647786 Supported catalyst systems and processes for use thereof Xuan Ye, John R. Hagadorn, Matthew W. Holtcamp, David F. Sanders 2020-05-12 $109,158,000
10640583 Catalyst composition comprising fluorided support and processes for use thereof Xuan Ye, Matthew W. Holtcamp, Lubin Luo, Laughlin G. McCullough, Francis C. Rix +3 more 2020-05-05 $263,770,000
10533063 Supported catalyst systems and processes for use thereof Xuan Ye, John R. Hagadorn, Matthew W. Holtcamp, David F. Sanders, Carlos R. Lopez-Barron 2020-01-14 $910,645,000
10508166 Production of polyolefins with internal unsaturation structures using a metallocene catalyst system Matthew W. Holtcamp, Matthew S. Bedoya, Xuan Ye, David F. Sanders, Sarah J. Mattler 2019-12-17 $163,696,000
10414887 Supported catalyst systems and methods of using same Xuan Ye, Matthew W. Holtcamp, Matthew S. Bedoya, David F. Sanders, Laughlin G. McCullough 2019-09-17 $90,008,000
10358397 Production of olefin dimers Meagan E. Evans, Crisita Carmen H. Atienza, Jo Ann M. Canich, John R. Hagadorn, David A. Cano +1 more 2019-07-23 $216,553,000
10351647 Polymerization process using bridged metallocene compounds supported on organoaluminum treated layered silicate supports Matthew W. Holtcamp, Laughlin G. McCullough, David F. Sanders 2019-07-16 $49,855,000
10294312 Olefin polymerization catalyst system comprising mesoporous organosilica support Matthew W. Holtcamp, David F. Sanders, David C. Calabro, Quanchang Li, Machteld M. W. Mertens 2019-05-21 $108,420,000
10287372 Bimodal propylene polymers and sequential polymerization Lubin Luo, Matthew W. Holtcamp 2019-05-14 $182,798,000
10119016 Heterophasic copolymers and sequential polymerization Lubin Luo, Matthew W. Holtcamp 2018-11-06 $231,220,000
10059788 Organoaluminum activators on clays Matthew W. Holtcamp 2018-08-28 $88,182,000
10000593 Supported Salan catalysts Xuan Ye, Crisita Carmen H. Atienza, Matthew W. Holtcamp, David F. Sanders, Michelle E. Titone +2 more 2018-06-19 $134,185,000
9994658 Polymerization process using bis phenolate compounds supported on organoaluminum treated layered silicate supports Crisita Carmen H. Atienza, Matthew W. Holtcamp, Xuan Ye, David A. Cano, Machteld M. Mertens +2 more 2018-06-12 $212,994,000
9994657 Polymerization process using bis phenolate compounds supported on organoaluminum treated layered silicate supports Crisita Carmen H. Atienza, Matthew W. Holtcamp, Xuan Ye, David A. Cano, Michelle E. Titone +2 more 2018-06-12 $212,994,000
9988410 Substituted bis indenyl metallocene catalyst compounds comprising-Si—Si-bridge Jian Yang, Matthew W. Holtcamp, Xiongdong Lian, Xuan Ye 2018-06-05 $295,746,000
9982076 Supported bis phenolate transition metals complexes, production and use thereof Xuan Ye, Crisita Carmen H. Atienza, Matthew W. Holtcamp, David F. Sanders, Michelle E. Titone +2 more 2018-05-29 $308,629,000
9982067 Polymerization process using pyridyldiamido compounds supported on organoaluminum treated layered silicate supports Matthew W. Holtcamp, John R. Hagadorn, Machteld M. Mertens, Gerardo J. Majano Sanchez, Rohan A. Hule 2018-05-29 $308,629,000
9944665 Bridged bis(indenyl) transitional metal complexes, production, and use thereof Jian Yang, Matthew W. Holtcamp, Xiongdong Lian 2018-04-17 $125,822,000
9926396 Production of polyolefins with internal unsaturation structures using a metallocene catalyst system Matthew W. Holtcamp, Matthew S. Bedoya, Xuan Ye, David F. Sanders, Sarah J. Mattler 2018-03-27 $195,508,000
9920176 Single site catalyst supportation Lubin Luo, Jian Yang, Matthew W. Holtcamp 2018-03-20 $138,531,000
9809664 Bimodal propylene polymers and sequential polymerization Luo Lubin, Matthew W. Holtcamp 2017-11-07 $67,851,000