Issued Patents 2002
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |