Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6677040 | Expanded polypropylene particles | Frank Braun, Klaus Hahn, Isidoor De Grave, Hermann Tatzel | 2004-01-13 |
| 6573308 | Biologically degradable foamed material particles | Frank Braun | 2003-06-03 |
| 6525172 | Drying of coagulated water-containing rubber particles | Peter Barghoorn, Rainer Klostermann | 2003-02-25 |
| 6521672 | Open-cell particulate foams | Franz-Josef Dietzen, Klaus Hahn, Gerd Ehrmann | 2003-02-18 |
| 6458858 | Biodegradable polyester material particles | Frank Braun, Klaus Hahn, Uwe Witt, Isidoor De Grave | 2002-10-01 |
| 6444714 | Method for producing expandable polystyrene particles | Franz-Josef Dietzen, Klaus Hahn, Gerd Ehrmann | 2002-09-03 |
| 6420442 | Flame-proofed polystyrene foamed materials | Franz-Josef Dietzen, Gerd Ehrmann, Gerhard Turznik, Gerhard Alicke, Klaus Hahn +2 more | 2002-07-16 |
| 6414041 | Expandable styrene polymers containing graphite particles | — | 2002-07-02 |
| 6387968 | Method for producing water expandable styrene polymers | Klaus Hahn, Roland Gellert | 2002-05-14 |
| 6384094 | Method for producing expandable styrene polymers containing exfoliated graphite particles | — | 2002-05-07 |
| 6362242 | Method for producing expandable styrene polymers | Klaus Hahn | 2002-03-26 |
| 6342540 | Method for producing water expandable styrene polymers | Klaus Hahn, Peter Dodel | 2002-01-29 |
| 6340713 | Expandable styrene polymers containing graphite particles | Klaus Hahn, Knut Kaempfer, Dieter Naegele, Frank Braun | 2002-01-22 |
| 6310109 | Process for the preparation of polymer particles | Klaus Hahn, Roland Gellert | 2001-10-30 |
| 6297292 | Water expanded polystyrene particles | Klaus Hahn, Roland Gellert | 2001-10-02 |
| 6046245 | Production of expandable styrene polymers | Karl-Heinz Batscheider | 2000-04-04 |
| 6046247 | Production of rigid polyurethane foams having a low thermal conductivity | Klaus Hahn, Udo Rotermund, Otto Volkert | 2000-04-04 |
| 5908872 | Production of expandable styrene polymers | Klaus Hahn, Achim Löffler, Maria Lorenz | 1999-06-01 |
| 5880166 | Expandable styrene polymers | Klaus Hahn, Rolf Henn, Karl-Heinz Wassmer, Hermann Gausepohl, Konrad Knoll +1 more | 1999-03-09 |