Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4225432 | Efficiency of ultrafiltration purification of solutions of polymeric colorants by inorganic base addition | Robin G. Booth | 1980-09-30 |
| 4189380 | Salt addition in ultrafiltration purification of solutions of polymeric colorants | Robin G. Booth | 1980-02-19 |