Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5705681 | Diquaternary compounds useful as bleach activators | Philip H. Steiger, Owen Portwood | 1998-01-06 |
| 5662827 | Diquaternary compounds useful as bleach activators, and compositions containing them | Philip H. Steiger, Owen Portwood | 1997-09-02 |
| 5399746 | Diquaternary bleach activators and compositions containing them | Philip H. Steiger, Owen Portwood | 1995-03-21 |
| 4803008 | Cleaning composition containing a colorant stabilized against fading | Laura A. Ciolino | 1989-02-07 |