Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322647 | Oxygen bleaching of cotton linters by disproportionation of hydrogen peroxide | Angelika Reiche, Hans-Dieter Brauer | 1994-06-21 |
| 4814440 | Process for producing extractive-material-reduced cellulose | Helmut Schulze, Ernst Berg, Michael Pelger | 1989-03-21 |
| 4719277 | Linear segmented polyurethane and process for its production | Christoph Josefiak | 1988-01-12 |
| 4686044 | Polycarbonate-polyether-copolymer membrane | Hans-Jurgen Pitowski | 1987-08-11 |
| 4661612 | Method for purifying silicone oil | Ulf George, Erwin Rochau, Hans Merk | 1987-04-28 |
| 4436839 | Process for preparing polycarbonate-polyether-blockcopolymers | Walter Loffelmann | 1984-03-13 |
| 4431619 | Process for the thermal polymerization of phosphazene polymers | Dieter Huff | 1984-02-14 |
| 4342807 | Low density matting and process | Alfred Rasen, Rolf Vollbrecht, Klemens Schenesse | 1982-08-03 |
| 4332686 | Linear polyurethane ultrafilter and processes for use thereof | Klaus Gerlach, Wolfgang Rosener, Ewald Hohm | 1982-06-01 |
| 4208509 | Process for the preparation of polyterephthaloyl-and polydiphenyl ether-4,4-dicarboxylic acid oxalamidrazone | Michael Wallrabenstein, Walter Brodowski | 1980-06-17 |