Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4458049 | Preparation of cocondensates which produce weather-resistant bonding | Hans Diem, Robert Fritsch, Heinz Lehnert, Guenther Matthias, Otto Wittmann | 1984-07-03 |
| 4260532 | Aqueous isocyanate emulsions prepared with polyglycol and polymerized unsaturated acid amide | Wolfgang Reuther, Adolph Segnitz, Otto Wittmann | 1981-04-07 |