Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5431781 | Process for the delignification of a chemical paper pulp with organic peroxy acid | — | 1995-07-11 |
| 5266158 | Process for the colour stripping and bleaching of coloured waste paper | Roy T. Hill | 1993-11-30 |