Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5159115 | Catalyzed gas-phase mono N-alkylation of aromatic primary amines | Judith B. Melville | 1992-10-27 |
| 4940552 | Passivation of polyamine dispersants toward fluorohydrocarbon compositions | John A. Cengel | 1990-07-10 |
| 4391721 | Dispersant viscosity index improver comprising reaction product of a styrene-maleic anhydride copolymer, an aliphatic alcohol and a tertiary amino alcohol | — | 1983-07-05 |
| 4379064 | Oxidative passivation of polyamine-dispersants | John A. Cengel, Mark W. Hunt, Joseph S. Strukl | 1983-04-05 |
| 4255160 | Flow improver for heavy petroleum products comprising alkenyl succinate diester | Adel B. Abdul-Malek | 1981-03-10 |