Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5783038 | Ink jet recording paper incorporating novel precipitated calcium carbonate pigment | Douglas Ward Donigian, Robert Kenneth Resnik | 1998-07-21 |
| 5643631 | Ink jet recording paper incorporating novel precipitated calcium carbonate pigment | Douglas Ward Donigian, Robert Kenneth Resnik | 1997-07-01 |