Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4455257 | Cationic reaction product of kraft lignin with aldehyde and polyamine | Henry W. Hoftiezer, Akio Takahashi | 1984-06-19 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4455257 | Cationic reaction product of kraft lignin with aldehyde and polyamine | Henry W. Hoftiezer, Akio Takahashi | 1984-06-19 |