Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649582 | Bleach catalysts and formulations containing them | Frédéric Banse, Riccardo Filippo Carina, Michel Delroisse, Jean-Jacques Girerd, Ronald Hage +1 more | 2003-11-18 |
| 6638901 | Composition and method for bleaching a substrate | Ronald Hage, Ton Swarthoff, David William Thornthwaite | 2003-10-28 |
| 6537959 | Bleach catalyst and composition and method for bleaching a substrate | Adrianus Appel, Ronald Hage, Stephen W. Russell | 2003-03-25 |