Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5133941 | Apparatus for hydrogenating hydrocarbons | Theodore M. Classen | 1992-07-28 |
| 4995961 | Process and apparatus for hydrogenating hydrocarbons | Theodore M. Classen | 1991-02-26 |
| 4800014 | Catalytic cracking process | Richard H. Nielsen, Chester O. Bowen, Floyd H. Holland | 1989-01-24 |
| 4739927 | Catalytic cracking unit | Richard K. Young, Richard H. Nielsen | 1988-04-26 |
| 4591362 | Fluid injection method | Amos Yudovich | 1986-05-27 |
| 4563334 | Catalytic cracking unit | Richard K. Young, Richard H. Nielsen | 1986-01-07 |
| 4562046 | Catalytic cracking unit | Richard H. Nielsen, Chester O. Bowen, Floyd H. Holland | 1985-12-31 |
| 4322227 | Gas purification | Charles F. Cook | 1982-03-30 |
| 4239510 | Natural gas purification | Charles F. Cook | 1980-12-16 |