Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883580 | Methods for deactivating iron in hydrocarbon fluids | Joseph H. Y. Niu | 1989-11-28 |
| 4847415 | Methods and composition for deactivating iron in hydrocarbon fluids | Joseph H. Y. Niu | 1989-07-11 |
| 4810354 | Bifunctional antifoulant compositions and methods | Joseph H. Y. Niu, Dwight K. Reid | 1989-03-07 |
| 4797504 | Method and composition for inhibiting acrylate ester polymerization | — | 1989-01-10 |