Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851531 | Isocyanurate group-containing polyisocyanates | Reinhard Halpaap, Gerhard Klein, Hanns P. Muller, Josef Pedain, Hans-Joachim Kreuder | 1989-07-25 |
| 4826948 | Impregnating agent and its use | Bernhard Jansen, Hanns P. Muller, Dietmar Schapel, Rudolf Schmidt | 1989-05-02 |
| 4824595 | Polyisocyanate compositions containing reversibly blocked catalysts and addition products of sulfonyl isocyanates with catalysts having a tin(II)- or tin(IV)-carboxylate structure | Hanns P. Muller, Rudolf Hombach, Manfred Dollhausen, Geza Avar, Hans-Albrecht Freitag | 1989-04-25 |
| 4810536 | Method of impregnating | Bernhard Jansen, Hanns P. Muller, Dietmar Schapel, Rudolf Schmidt | 1989-03-07 |