Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364554 | Proteolytic perhydrolysis system and method of use for bleaching | Fred A. Heitfeld, Richard J. Wiersema, Ayyookaran J. Poulose | 1994-11-15 |
| 5296161 | Enzymatic perhydrolysis system and method of use for bleaching | Richard J. Wiersema | 1994-03-22 |