Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662827 | Diquaternary compounds useful as bleach activators, and compositions containing them | Philip H. Steiger, Owen Portwood | 1997-09-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662827 | Diquaternary compounds useful as bleach activators, and compositions containing them | Philip H. Steiger, Owen Portwood | 1997-09-02 |