Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7906594 | Process for preparation of polymer blends composed of polyoxymethylenes and of thermoplastic elastomers | Ernst Hofmann, Michael Hoffmockel | 2011-03-15 |
| 7795357 | Polyoxymethylene multi-block copolymers, their production and use | Dirk Zierer, Klaus Kurz, Jens Schiebisch, Holger Schmalz | 2010-09-14 |
| 7534922 | Processes for the manufacture of acetals | Matthias Göring, Michael Hoffmockel, Jurgen Lingnau | 2009-05-19 |
| 7301055 | Process for removing methanol from formaldehyde-containing solutions | Michael Hoffmockel, Matthias Göring, Juergen Lingnau | 2007-11-27 |
| RE39182 | Process for the preparation of thermally stable polyoxymethylene copolymers | Horst Roschert, Robert M. Gronner, Satyajit Verma, Michael G. Yearwood | 2006-07-11 |
| 7001959 | Polyoxymethylene copolymers, their preparation and use | Klaus Kurz, Michael Hoffmockel | 2006-02-21 |
| 6306940 | Colorant concentrates for dyeing polyoxymethylene moulding materials | Stefan Disch, Peter Eckardt, Michael Hoffmockel, Gerhard Reuschel | 2001-10-23 |
| 6169164 | Process for preparing polyoxymethylene molding compositions of improved quality | Horst Roschert, Joachim Endres, Juergen Kroll, Rainer Hensl | 2001-01-02 |
| 5994455 | Process for the preparation of thermally stable polyoxymethylene copolymers | Horst Roschert, Robert M. Gronner, Satyajit Verma, Michael G. Yearwood | 1999-11-30 |
| 5962623 | Process for the preparation of polyacetal copolymers | Peter Eckardt, Michael Hoffmockel, Gerhard Reuschel, Satyajit Verma, Michael G. Yearwood | 1999-10-05 |
| 5955041 | Natural circulation reactor and use for producing linear and cyclic acetals | Dieter Arnold, Bernhard Hierholzer, Hubert Wloch | 1999-09-21 |
| 5872263 | Process for separating formaldehyde and trioxane | Michael Hoffmockel, Gunter Sextro | 1999-02-16 |
| 5766424 | Process for removing trioxane from an aqueous mixture | Dieter Arnold, Bernhard Hierholzer, Monika Reiss, Peter Richter, Hans-Dietmar Schnabel +1 more | 1998-06-16 |
| 5587449 | Process for the preparation of polyacetal copolymers | Dietrich Fleischer, Michael Hoffmockel, Gunter Sextro | 1996-12-24 |
| 5508448 | Process for the preparation of trioxane | Gerhard Emig, Benno Kruger, Frank Kern, Michael Hoffmockel, Gunter Sextro | 1996-04-16 |
| 5508449 | Process for the preparation of trioxane | Gerhard Emig, Benno Kruger, Frank Kern, Michael Hoffmockel, Gunter Sextro | 1996-04-16 |
| 5401859 | Process for the preparation of pure trioxane | Helmut Schlaf, Siegbert Rittner | 1995-03-28 |
| 5144005 | Continuous process for removing unstable components from crude oxymethylene copolymer | Gunter Sextro, Karlheinz Burg, Eberhard Fischer | 1992-09-01 |
| 5102838 | Catalyst for selective oxidation reactions | Horst Beck, Gerhard Emig, Gunther Wiesgickl, Karlheinz Burg | 1992-04-07 |
| 5041686 | Process for the preparation of carbonyl compounds | Horst Beck, Gerhard Emig, Gunther Wiesgickl, Karlheinz Burg | 1991-08-20 |
| 5008463 | Process for the preparation of formaldehyde | Horst Beck, Gerhard Emig, Gunther Wiesgickl, Karlheinz Burg | 1991-04-16 |
| 4946561 | Process for obtaining trioxane from aqueous solutions by high-pressure extraction | Gero Braun, Karlheinz Burg | 1990-08-07 |
| 4703129 | Process for the continuous preparation of trioxane | Karlheinz Burg | 1987-10-27 |
| 4504670 | Process for the continuous manufacture of trioxane | Hartmut Voigt, Helmut Bar, Herbert Mader, Karlheinz Burg, Gunter Sextro | 1985-03-12 |
| 4353856 | Process and embedding system for embedding tissue samples | Lothar Post, Hannes Westen | 1982-10-12 |