Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886611 | Hydrocarbon compositions containing polyolefin graft polymers | Maria M. Kapuscinski, Larry D. Grina, Rodney L. Sung | 1989-12-12 |
| 4877415 | Hydrocarbon compositions containing polyolefin graft polymers | Maria M. Kapuscinski, Larry D. Grina, Rodney L. Sung | 1989-10-31 |
| 4842756 | Multifunctional viscosity index improver | Christopher S. Liu, Maria M. Kapuscinski, Larry D. Grina | 1989-06-27 |
| 4836943 | Anti-oxidant system | Maria M. Kapuscinski, Christopher S. Liu, Larry D. Grina | 1989-06-06 |
| 4820776 | Hydrocarbon compositions containing polyolefin graft polymers having amine and phenothiazine grafted moieties | Maria M. Kapuscinski, Larry D. Grina, Rodney L. Sung | 1989-04-11 |