Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
JD

Joseph G. Duff

TGTpc Group: 14 patents #1 of 37Top 3%
UOUop: 2 patents #869 of 1,854Top 50%
CGCelanese Gmbh: 1 patents #238 of 404Top 60%
League City, TX: #24 of 561 inventorsTop 5%
Texas: #9,719 of 125,132 inventorsTop 8%
Overall (All Time): #318,898 of 4,157,543Top 8%
15 Patents All Time

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
10836690 Dehydrogenation process and system with reactor re-sequencing David S. Hager, Gilbert Valdez, Joseph A. Comeaux, Michael O. Nutt 2020-11-17
10544071 Heat recovery in the process of production of butadiene John J. Senetar, Jillian M. Horn, Clifford A. Maat, Michael O. Nutt 2020-01-28
10538466 Use of C4 absorber overhead for stripping aldehydes John J. Senetar, Jeannie Mee Blommel, Charles P. Luebke, Dana K. Sullivan, Jillian M. Horn +2 more 2020-01-21
10052608 Low emissions oxidative dehydrogenation apparatus for producing butadiene Liana Caciula, Elizabeth Ballard, Sirisha Chada, Mark J. Potter 2018-08-21
10035740 Multi-stage oxidative dehydrogenation process with inter-stage cooling Clifford A. Maat, Liana Caciula, Michael O. Nutt, Robert Confair, Mark P. Kaminsky +2 more 2018-07-31
10035136 Catalyst for reduced nitrogen oxide (NOx) emissions in an oxodehydrogenation process Jillian M. Horn, Michael O. Nutt, George Pappas 2018-07-31
10035741 High throughput oxidative dehydrogenation process Jillian M. Horn, Clifford A. Maat, Robert P. Adams, John J. Senetar 2018-07-31
9908097 Controllability oxidative dehydrogenation process for producing butadiene Liana Caciula, Sirisha Chada, Elizabeth Ballard, Cecil G. McFarland 2018-03-06
9902669 Oxidative dehydrogenation process with hydrocarbon moderator gas and reduced nitrogen feed Liana Caciula, Clifford A. Maat, Mark P. Kaminsky, Michael O. Nutt, Jillian M. Horn 2018-02-27
9861976 Regeneration of oxidative dehydrogenation catalyst in a reactor Jillian M. Horn 2018-01-09
9650316 Low emissions oxidative dehydrogenation process for producing butadiene Liana Caciula, Elizabeth Ballard, Sirisha Chada, Mark J. Potter 2017-05-16
9505682 Manufacture of butadiene from ethylene Clifford A. Maat, Michael O. Nutt, Mark P. Kaminsky 2016-11-29
9353025 Process for selective removal of acetylenes from gaseous streams Cecil G. McFarland 2016-05-31
9115038 Process for selective removal of acetylenes from gaseous streams Cecil G. McFarland 2015-08-25
8884052 Production of diacetoxyethylene by direct acetoxylation Stephen Kerlegon, Kien Van Phung, Daniel Rangel-Osalde, Tatiana H. Sonnenberg, Cathy L. Tway +1 more 2014-11-11