Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5608030 | Process for the preparation of polyacetals | Michael Hoffmockel, Karl-Friedrich M uck, Helmut Schlaf | 1997-03-04 |
| 5266633 | Toughened polyoxymethylene and shaped articles produced therefrom | Harald Cherdron, Friedrich Kloos, Helmut Schlaf | 1993-11-30 |
| 5144005 | Continuous process for removing unstable components from crude oxymethylene copolymer | Gunter Sextro, Karl-Friedrich Muck, Eberhard Fischer | 1992-09-01 |
| 5102838 | Catalyst for selective oxidation reactions | Horst Beck, Gerhard Emig, Gunther Wiesgickl, Karl-Friedrich Muck | 1992-04-07 |
| 5047471 | Toughened polyoxymethylene and shaped articles produced therefrom | Harald Cherdron, Friedrich Kloos, Helmut Schlaf | 1991-09-10 |
| 5041686 | Process for the preparation of carbonyl compounds | Horst Beck, Gerhard Emig, Gunther Wiesgickl, Karl-Friedrich Muck | 1991-08-20 |
| 5039741 | Toughened polyoxymethylene and shaped articles produced therefrom | Harald Cherdron, Friedrich Kloos, Helmut Schlaf | 1991-08-13 |
| 5008463 | Process for the preparation of formaldehyde | Horst Beck, Gerhard Emig, Gunther Wiesgickl, Karl-Friedrich Muck | 1991-04-16 |
| 4946561 | Process for obtaining trioxane from aqueous solutions by high-pressure extraction | Gero Braun, Karl-Friedrich Muck | 1990-08-07 |
| 4703129 | Process for the continuous preparation of trioxane | Karl-Friedrich Muck | 1987-10-27 |
| 4504670 | Process for the continuous manufacture of trioxane | Hartmut Voigt, Karl-Friedrich Muck, Helmut Bar, Herbert Mader, Gunter Sextro | 1985-03-12 |
| 4456710 | Filler-containing plastic molding composition, a process for its preparation, and its use | Walter Luders | 1984-06-26 |
| 4323502 | Process for the simultaneous preparation of trioxan and cyclic formals | Karl-Friedrich Muck, Gunter Sextro | 1982-04-06 |
| 4307009 | Filler-containing molding composition and process for its manufacture | Walter Luders, Walter Herwig, Ulrich van Spankeren | 1981-12-22 |
| 4277577 | Thermoplastic molding compositions on the basis of oxymethylene polymers | Werner Schmieder, Ernst Wolters | 1981-07-07 |
| 4195158 | Process for the preparation of granular oxymethylene polymers having improved mechanical properties | Alwin Heller, Hans-Dieter Sabel, Helmut Schlaf, Gunter Sextro | 1980-03-25 |
| 4181685 | Thermoplastic molding compositions on the basis of polyoxymethylenes | Rudolf Kern, Heinz Schmidt, Ernst Wolters, Gunter Sextro | 1980-01-01 |