Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840720 | Process for minimizing fouling of processing equipment | — | 1989-06-20 |
| 4822378 | Process and composition for color stabilized distillate fuel oils | — | 1989-04-18 |
| 4810354 | Bifunctional antifoulant compositions and methods | Paul V. Roling, Joseph H. Y. Niu | 1989-03-07 |