Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4699893 | Fluid cracking catalyst and method of making same from waste catalyst manufacture fines | Francis L. Himpsl, Barry K. Speronello | 1987-10-13 |
| 4581340 | Fluid cracking catalyst and method of making same from waste catalyst manufacture fines | Francis L. Himpsl, Barry K. Speronello | 1986-04-08 |
| 4520119 | Cracking catalyst and manufacture thereof | Francis L. Himpsl, Eugene B. Horvath, Barry K. Speronello | 1985-05-28 |