Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6235799 | Method for producing soft to medium-hard structural polyurethane foams | Norbert Eisen, Peter Haas | 2001-05-22 |
| 6224797 | Method for producing reactive plastic molded bodies with highly filled coarse-grained filling material | Reinhold Franzen, Anthony Martinus Jacobus van Staveren | 2001-05-01 |
| 5342855 | Stable dispersions of polyhydrazodicarbonamides useful in the preparation of polyurethane products having improved load-bearing capacity | Michael A. Lucarelli, Richard E. Keegan, Mark A. Koshute, Hans-Albrecht Freitag | 1994-08-30 |
| 5179146 | Modified polyisocyanates, a process for their production and their use | Hanns P. Muller, Christian Weber, Karl-Heinz Dorner, Alexander Karbach, Christian Lindner +1 more | 1993-01-12 |
| 4824595 | Polyisocyanate compositions containing reversibly blocked catalysts and addition products of sulfonyl isocyanates with catalysts having a tin(II)- or tin(IV)-carboxylate structure | Roland Richter, Hanns P. Muller, Rudolf Hombach, Manfred Dollhausen, Hans-Albrecht Freitag | 1989-04-25 |
| 4775558 | Polyurethanes prepared or combined with another material and a process for their manufacture | Peter Haas | 1988-10-04 |
| 4761307 | Process for the production of optionally foamed polyurethanes which are combined or fabricated with another material | Peter Haas, Hans-Albrecht Freitag | 1988-08-02 |
| 4644017 | Process for the production of polyisocyanate addition products and composite polyisocyanate addition products | Peter Haas, Hans-Albrecht Freitag, Claus-Dieter Sommerfeld, Hans-Walter Illger | 1987-02-17 |
| 4546121 | Use of polyhydroxyalkyl monoureas for polyurethane foams, dispersions of the polyhydroxyalkyl monoureas in polyols and new tris-hydroxyalkyl monoureas | Peter Haas, Hartwig Grammes | 1985-10-08 |
| 4540626 | Polyhydroxyalkyl polycarbonamides for the production of flame-resistant polyurethane rigid foams and integral foams | Peter Haas, Hartwig Grammes | 1985-09-10 |
| 4478893 | Polyisocyanate addition products useful as mold release agents and a process for their production | Manfred Schonfelder, Peter Haas, Helmut Steinberger | 1984-10-23 |
| 4390640 | Process for the production of optionally-foamed polyurethanes | Werner Rasshofer, Hans-Albrecht Freitag, Gerhard Grogler, Richard Kopp | 1983-06-28 |