Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12297389 | Plastic pyrolysis reactor | David Lee Guymon, Daniel T. Fernald, Richard John Jibb, Sudipto Chakraborty, Johnny Doyle Combs +2 more | 2025-05-13 |
| 12253024 | Recuperative heat exchanger system | Richard John Jibb, David Lee Guymon, Vincenzo Marco Brignone, Roberto Groppi | 2025-03-18 |
| 12188395 | Recuperative heat exchanger system | Richard John Jibb, David Lee Guymon, Vincenzo Marco Brignone, Roberto Groppi | 2025-01-07 |
| 11821699 | Heat exchanger hanger system | David Lee Guymon | 2023-11-21 |
| 11795401 | Conversion of waste plastics to petrochemicals | Sudipto Chakraborty, Daniel T. Fernald, David Lee Guymon, Richard John Jibb, Johnny Doyle Combs +1 more | 2023-10-24 |
| 11719141 | Recuperative heat exchanger system | Richard John Jibb, David Lee Guymon, Vincenzo Marco Brignone, Roberto Groppi | 2023-08-08 |
| 9611437 | Producing low methane syngas from a two-stage gasifier | Shuncheng Ji, Chancelor L. Williams | 2017-04-04 |