Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6175017 | Process for the production of aryl carbonates | Hans-Josef Buysch, Gunther Jeromin | 2001-01-16 |
| 5831111 | Process for the continuous production of aryl carbonates | Pieter Ooms, Eric Bischof, Hans-Josef Buysch, Steffen Kuhling, Gottfried Zaby +2 more | 1998-11-03 |
| 5688891 | T,3-dioxan-2-one group-containing oligourethanes | Wieland Hovestadt, Hans-Josef Buysch, Lutz Schmalstieg, Harald Blum | 1997-11-18 |
| 5527942 | Process for the production of aryl carbonates | Pieter Ooms, Hans-Josef Buysch | 1996-06-18 |
| 5523451 | Process for the continuous preparation of aryl carbonates | Johann Rechner, Paul Wagner, Hans-Josef Buysch, Stephan Kabelac | 1996-06-04 |
| 5495038 | Process for the purification of diphenyl carbonate | Hans-Josef Buysch, Christine Mendoza-Frohn, Johann Rechner | 1996-02-27 |
| 5478961 | Process for preparting aryl carbonates | Pieter Ooms, Hans-Josef Buysch | 1995-12-26 |
| 5473094 | Process for preparing aryl carbonates | Pieter Ooms, Hans-Josef Buysch | 1995-12-05 |
| 5463102 | Process for the continuous production of aryl carbonates | Johann Rechner, Paul Wagner, Hans-Josef Buysch, Hans-Erich Gasche, Ricarda Leiberich | 1995-10-31 |
| 5440066 | Process for splitting polycarbonates | Hans-Josef Buysch, Steffen Kuhling, Heinrich Hähnsen | 1995-08-08 |
| 5391802 | Process for cleaving polycarbonates into bisphenols and diaryl carbonates | Hans-Josef Buysch, Steffen Kuhling | 1995-02-21 |
| 5362901 | Process for the preparation of organic carbonates having at least one aromatic ester group | Paul Wagner, Hans-Josef Buysch | 1994-11-08 |
| 5354923 | Process for the preparation of aromatic carbonic diesters | Hans-Josef Buysch, Eberhard Zirngiebl, Jurgen Kischkewitz | 1994-10-11 |
| 5344954 | Process for the preparation of diaryl carbonates | Hans-Josef Buysch, Paul Wagner, Reinhard Langer | 1994-09-06 |
| 5334742 | Process for the continuous preparation of diaryl carbonates from dialkyl carbonates | Reinhard Langer, Hans-Josef Buysch, Paul Wagner | 1994-08-02 |
| 5284965 | Process for preparing aromatic carbonates | Hans-Josef Buysch, Johann Rechner | 1994-02-08 |
| 5270385 | Antistatic, thermoplastic moulding compounds based on aromatic polycarbonates and aromatic vinyl polymers | Hans-Josef Buysch, Herbert Eichenauer, Hans-Jurgen Kress, Josef Buekers | 1993-12-14 |
| 5266716 | Process for the splitting of polycarbonates | Hans-Josef Buysch, Steffen Kuhling | 1993-11-30 |
| 5149856 | Process for the preparation of carbonic acid diesters containing at least one aromatic ester group | Hans-Josef Buysch, Wolfgang Ebert | 1992-09-22 |
| 5116918 | Crosslinked copolymers based on cyclic esters and carbonates | Hartwig Hocker, Helmut Keul, Edgar Leitz, Steffen Kuhling | 1992-05-26 |
| 5084524 | Block copolymers based on cyclic aliphatic carbonates and/or esters on the one hand and cyclic aromatic carbonates on the other hand | Edgar Leitz, Karl-Heinz Ott, Alfred K. Jung, Ulrich Grigo, Hans-Josef Buysch | 1992-01-28 |
| 5064899 | Antistatic, thermoplastic moulding compounds based on aromatic vinyl polymers | Hans-Josef Buysch, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan | 1991-11-12 |
| 5061752 | Antistatic, thermoplastic moulding compounds based on aromatic vinyl polymers II | Hans-Josef Buysch, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan | 1991-10-29 |
| 5023346 | Process for the production of cyclic carbonic acid esters | Hans-Josef Buysch | 1991-06-11 |
| 4920166 | Flame-resistant, antistatic polycarbonate molding compositions | Hans-Josef Buysch, Hans-Jurgen Kress, Herbert Eichenauer, Josef Buekers | 1990-04-24 |