Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6342616 | Triphenylmethane polymeric colorant having sterically hindered amine counter ions | — | 2002-01-29 |
| 6342617 | Triphenylmethane polymeric colorant having sterically hindered amine counter ions | — | 2002-01-29 |
| 6342618 | Triphenylmethane polymeric colorant having sterically hindered amine counter ions | — | 2002-01-29 |