Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6107359 | Polyether polyols, polyol formulation containing them and their use in the production of hard polyurethane foams | Karl Werner Dietrich, Manfred Dietrich, Walter Klan | 2000-08-22 |
| 5840781 | Polyether polyols, polyol formulation containing them and their use in the production of hard polyurethane foams | Karl Werner Dietrich, Manfred Dietrich, Walter Klan | 1998-11-24 |
| 5646196 | C.sub.3 to C.sub.5 polyfluorcalkanes propellants | Claus-Dieter Sommerfeld, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele | 1997-07-08 |
| 5624970 | C.sub.3 to C.sub.5 polyfluorcalkanes propellants | Claus-Dieter Sommerfeld, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele | 1997-04-29 |
| 5602190 | Process for the production of hard polyurethane foams | Norbert Eisen, James A. Thompson-Colón | 1997-02-11 |
| 5578651 | Process for producing rigid polyurethane foams | Norbert Eisen | 1996-11-26 |
| 5496866 | C.sub.3 to C.sub.5 polyfluoroalkanes propellants | Claus-Dieter Sommerfeld, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele | 1996-03-05 |
| 5496867 | C.sub.3 to C.sub.5 polyfluoroalkanes propellants | Calus-Dieter Sommerfeld, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele | 1996-03-05 |
| 5428077 | Process for producing isocyanate-based foams | Werner Dietrich | 1995-06-27 |
| 5372789 | Device for the production of a reaction mixture | James A. Thompson-Colón, Wilfried Ebeling, Klaus Schulte | 1994-12-13 |
| 4931482 | Use of 1,1,1,4,4,4-hexaefluorobutane as a blowing and insulating gas for the production of foam plastics | Klaus-Dieter Sommerfeld, Dietmar Bielefeldt, Albrecht Marhold, Michael Negele | 1990-06-05 |