Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230814 | Hydrocarbon recovery comprising injecting a slug comprising oil soluble alkoxylated surfactants from lignin | Douglas G. Naae, Nancy G. Dunn | 1993-07-27 |
| 5094296 | Lignin amine microemulsions | — | 1992-03-10 |
| 4790382 | Alkylated oxidized lignins as surfactants | Lawrence R. Morrow, Lawrence E. Whittington | 1988-12-13 |
| 4739041 | Alkylated oxidized lignins as surfactants | Lawrence R. Morrow, Lawrence E. Whittington | 1988-04-19 |
| 4435361 | Corrosion inhibition system containing dicyclopentadiene sulfonate salts | Frederick W. Valone | 1984-03-06 |