Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859284 | Combined process for the separation and continuous coking of high softening point asphaltenes | Roland Rammler, Hans-Jurgen Weiss, Hans-Adolf Herbertz, Rodolfo B. Solari | 1989-08-22 |
| 4795548 | Process for making anode grade coke | Leon E. Velasco R, Joaquin Rodriguez, Wolfgang Garcia | 1989-01-03 |