Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6087409 | Production of rigid polyurethane foams | Werner Schmiade, Michael Gassan | 2000-07-11 |
| 6069182 | Recycling of plastic waste containing a mixture of polyurethanes with other plastics | Vera Neiss, Michael Gassan, Werner Deutsch | 2000-05-30 |
| 5968992 | Reduction of the amine content of recycled polyols | Michael Gassan, Thomas Schupp, Sarbananda Chakrabarti | 1999-10-19 |
| 5654344 | Production of rigid to semirigid polyurethane foams having an increased proportion of open cells and reduced shrinkage | Peter Falke, Inge Rotermund | 1997-08-05 |
| 5556889 | Preparation of recyclate polyols | Maritta Lezius | 1996-09-17 |
| 5357006 | Preparation of recyclate polyols, and the use thereof in the preparation of polyurethanes | Michael Gassan, Vera Neiss, Peter Moeckel, Wolfgang Weissflog | 1994-10-18 |