Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6469060 | Compositions based on iodopropynyl-and formaldehyde donor compounds and to their use as preservatives | Wolfgang Siegert, Klaus Weber | 2002-10-22 |
| 6465498 | Use of derivatives of methylene-bis-oxazolidine and compositions obtained thereby | Ralf Gradtke | 2002-10-15 |
| 6380391 | Process for the preparation of bis(4-amino-1-pyridinium) alkanes | Ralf Gradtke, Michael Streek | 2002-04-30 |
| 6355679 | Preservative compositions based on iodopropynl- and formaldehyde donor compounds | Wolfgang Siegert, Klaus Weber | 2002-03-12 |
| 6348483 | Use of derivatives of methylene-bis-oxazolidine and compositions obtained thereby | Ralf Gradtke | 2002-02-19 |