Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661197 | Erasable ink composition containing a polymer-encapsulated colorant derived from monomer containing dissolved colorant | David C. Villiger, Aiying Wang, Jeffery H. Banning, Wayne A. Chandler | 1997-08-26 |
| 5637638 | Erasable ink composition containing a waterborne polyurethane-urea derived from an aromatic amine dye monomer and marking instrument containing same | Wayne A. Chandler, David C. Villiger, Jeffery H. Banning, Aiying Wang | 1997-06-10 |