Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4519843 | Modified polyalkylenepolyamines | Stephen B. Willis | 1985-05-28 |
| 4482667 | Modified polyalkylenepolyamines | Stephen B. Willis | 1984-11-13 |
| 4461856 | Aqueous hydraulic cement slurry | Stephen B. Willis | 1984-07-24 |