Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846958 | High severity visbreaking with recycle | Robert J. Feldman, Andrei Rhoe, Roger P. Van Driesen, Joseph F. Puzio | 1989-07-11 |
| 4773986 | High severity visbreaking | Robert J. Feldman, Andrei Rhoe, Roger P. Van Driesen, Joseph F. Puzio | 1988-09-27 |
| 4558167 | Hydrogen chloride-propylene separation | Herbert Riegel, Chiung-Yuan Huang | 1985-12-10 |
| 4329525 | Production of chlorinated compounds by use of molten salts | Herbert Riegel, Morgan C. Sze | 1982-05-11 |