Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824884 | Cyclic anhydride derivatives of hydrazide functionalized hindered amine light stabilizers | Ronald E. MacLeay | 1989-04-25 |
| 4801749 | Phenolic antioxidant hydrazides | Ronald E. MacLeay, Jerome Wicher | 1989-01-31 |