Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5332529 | Electric discharge machine process and fluid | Douglas H. Culpon, Jr. | 1994-07-26 |
| 5242579 | Control method for solvent refining lubricating oils | Avilino Sequeira, Jr. | 1993-09-07 |
| 5178750 | Lubricating oil process | — | 1993-01-12 |
| 5171426 | Control method for solvent refining lubricating oils | William H. Stein | 1992-12-15 |
| 4866632 | Control means and method for solvent refining unit | Betty J. Morris | 1989-09-12 |
| 4504376 | Urea dewaxing of naphthene oils | James H. Wright | 1985-03-12 |
| 4490245 | Process for reclaiming used lubricating oil | James H. Wright | 1984-12-25 |
| 4294689 | Solvent refining process | Avilino Sequeira, Jr., Benjamin F. Smith, Jr. | 1981-10-13 |