Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6646122 | Ligand and complex for catalytically bleaching a substrate | Thomas Weyhermuller, Karl Wieghardt | 2003-11-11 |
| 6610641 | Composition and method for bleaching a substrate | Ronald Hage, Thomas Weyhermuller, Karl Wieghardt | 2003-08-26 |