Issued Patents All Time
Showing 76–100 of 108 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5173514 | Heat distortion resistant, expandable styrene polymers having a high capacity of expansion | Uwe Guhr, Hans Hintz, Dietmar Wittenberg | 1992-12-22 |
| 5166221 | Expandable styrene polymers, and aromatic-resistant foams produced therefrom | Uwe Guhr, Hans Hintz, Hans Hoenl | 1992-11-24 |
| 5145878 | Drying of finely divided, expandable styrene polymers | Matthias Dietrich | 1992-09-08 |
| 5106684 | Foam sheets of high heat distortion resistance | Reinhold Weber, Gerhard Alicke, Manfred Weilbacher, Uwe Guhr | 1992-04-21 |
| 5104903 | Bead-form expandable styrene polymers having a high expansion capacity | Uwe Guhr, Hans Hintz, Rolf Richter | 1992-04-14 |
| 5100923 | Preparation of expandable styrene polymers | Hans Hintz, Uwe Guhr | 1992-03-31 |
| 5096931 | Expandable styrene polymers | Dietmar Wittenberg, Uwe Guhr, Hans Hintz, Michael P. O'Callaghan, deceased, Michael Riethues | 1992-03-17 |
| 5093374 | Expandable molding compositions having high heat distortion resistance, and the preparation thereof | Uwe Guhr, Hans Hintz, Dietmar Wittenberg | 1992-03-03 |
| 5093375 | Bead-like expandable molding materials having high heat distortion resistance and their preparation | Uwe Guhr, Hans Hintz, Roland Gellert | 1992-03-03 |
| 5071703 | Foam sheets of high heat distortion resistance | Reinhold Weber, Gerhard Alicke, Manfred Weilbacher, Uwe Guhr | 1991-12-10 |
| 5043218 | Flame resistant, expandable styrene polymers and foams, and flame retardants | Uwe Guhr, Hans Hintz, Dietmar Wittenberg, Peter Gleich | 1991-08-27 |
| 5010111 | Flame resistant, expandable styrene polymers and foams, and flame retardants | Uwe Guhr, Hans Hintz, Dietmar Wittenberg, Peter Gleich | 1991-04-23 |
| 4990540 | Expandable styrene polymer of high oil resistance and preparation thereof | Uwe Guhr, Hans Hintz, Roland Gellert | 1991-02-05 |
| 4990539 | Preparation of styrene polymer foam particles | Uwe Guhr, Roland Gellert, Wolf-Dieter Back | 1991-02-05 |
| 4983639 | Expandable styrene polymers and their preparation | Uwe Guhr, Hans Hintz | 1991-01-08 |
| 4980381 | Preparation of bead-form expandable styrene polymers | Hans Hintz, Uwe Guhr, Hans G. Keppler | 1990-12-25 |
| 4973610 | Expandable styrene polymers | Uwe Guhr, Hans Hintz, Karl H. Roehrig | 1990-11-27 |
| 4798811 | Combination preparation | Hans D. Lehmann, Rolf Kretzschmar | 1989-01-17 |
| 4772441 | Styrene polymers containing blowing agents | Harro Voss, Walter Manfred, Isidoor DeGrave | 1988-09-20 |
| 4769394 | Expandable styrene polymers and styrene polymer foams | Isidoor De Grave | 1988-09-06 |
| 4525484 | Particulate polystyrene containing blowing agent and having improved expandability | Paul Wittmer, Isidoor De Grave, Rupert Schick, Adolf Echte | 1985-06-25 |
| 4520135 | Particulate polystyrene containing blowing agent and having improved expandability | Paul Wittmer, Isidoor De Grave, Rupert Schick, Adolf Echte | 1985-05-28 |
| 4513105 | Particulate polystyrene containing blowing agent and having improved expandability | Paul Wittmer, Isidoor De Grave, Rupert Schick, Adolf Echte | 1985-04-23 |
| 4459373 | Pre-expanded plastic beads based on poly-para-methylstyrene | Isidoor De Grave, Rupert Schick | 1984-07-10 |
| 4446253 | Production of fine-celled foams from styrene polymers | Heinz Weber, Wolfgang Guenther, Bernhard Schillinger, Reinhold Weber | 1984-05-01 |