Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6761832 | Process for the production of dithiophosphoric acid polysulfide mixtures | Ludger Heiliger, Alfred Pauli, Joachim Hegmann, Thomas Früh | 2004-07-13 |
| 5563240 | Poly [2,5-bis(polysulphano)-1,3,4-thiadiazoles] | Hans-Joachim Graf, Volker Sch afer, Kurt Schilling | 1996-10-08 |
| 5155248 | Polyurethane catalysts | Volker Ullrich | 1992-10-13 |