Issued Patents All Time
Showing 76–100 of 186 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371294 | Process for the preparation of a mixture of cyclohexylamine and dicyclohexylamine | Otto Immel, Gerhard Darsow | 1994-12-06 |
| 5362901 | Process for the preparation of organic carbonates having at least one aromatic ester group | Paul Wagner, Norbert Schon | 1994-11-08 |
| 5359118 | Process for the continuous preparation of dialkyl carbonates | Paul Wagner, Franz-Josef Mais, Reinhard Langer, Alexander Klausener | 1994-10-25 |
| 5354923 | Process for the preparation of aromatic carbonic diesters | Norbert Schon, Eberhard Zirngiebl, Jurgen Kischkewitz | 1994-10-11 |
| 5350862 | Process for the preparation of ethylene glycol carbonate | Paul Wagner, Alexander Klausener, Franz-Josef Mais, Christine Mendoza-Frohn | 1994-09-27 |
| 5344987 | Process for preparing diphenylamines | Otto Immel, Gerhard Darsow | 1994-09-06 |
| 5344954 | Process for the preparation of diaryl carbonates | Norbert Schon, Paul Wagner, Reinhard Langer | 1994-09-06 |
| 5338885 | Process for the preparation of diphenylamines | Otto Immel, Gerhard Darsow | 1994-08-16 |
| 5338861 | Process for the preparation of N-substituted lactams | Artur Botta, Otto Immel, Lothar Puppe | 1994-08-16 |
| 5334742 | Process for the continuous preparation of diaryl carbonates from dialkyl carbonates | Norbert Schon, Reinhard Langer, Paul Wagner | 1994-08-02 |
| 5324776 | Process for the preparation of polymers containing amino groups | Klaus Szablikowski | 1994-06-28 |
| 5324777 | Process for the production of polymers containing ammonium groups | Dieter Arlt, Klaus Szablikowski | 1994-06-28 |
| 5314986 | Phenolic resins from bisphenol a residual resins and mixtures of chloro-substituted hydrocarbons, and the use of specific phenolic resins as homogenizers for rubber vulcanizates | Pieter Ooms, Heinrich Schrage, Rene Loix, Hans-Joachim Graf | 1994-05-24 |
| 5310849 | Amino and ammonium isocyanates, a process for their preparation, their use for the production of polymers containing ammonium groups and the polymers thus produced | Klaus Konig, Alexander Klausener, Klaus Szablikowski, Jorn Breckwoldt | 1994-05-10 |
| 5302774 | Process for the production of bisphenols | Klaus Berg, Alfred Eitel, Gerhard Fennhoff, Otto Immel, Ralf Pakull +2 more | 1994-04-12 |
| 5300706 | Process for the preparation of d,1-menthol | Otto Immel, Gerhard Darsow | 1994-04-05 |
| 5298659 | Method for the preparation of azomethines | Reinhard Langer, Paul Wagner | 1994-03-29 |
| 5292953 | Process for the preparation of azomethines | Reinhard Langer, Paul Wagner | 1994-03-08 |
| 5292712 | Thermoreactive recording material having particular stability | Gunter Klug, Heinrich Schrage, Pieter Ooms | 1994-03-08 |
| 5284965 | Process for preparing aromatic carbonates | Norbert Schon, Johann Rechner | 1994-02-08 |
| 5274163 | Process for the preparation of dialkyl carbonates | Johann Rechner, Alexander Klausener, Paul Wagner | 1993-12-28 |
| 5270385 | Antistatic, thermoplastic moulding compounds based on aromatic polycarbonates and aromatic vinyl polymers | Norbert Schon, Herbert Eichenauer, Hans-Jurgen Kress, Josef Buekers | 1993-12-14 |
| 5266716 | Process for the splitting of polycarbonates | Norbert Schon, Steffen Kuhling | 1993-11-30 |
| 5258554 | Process for monobenzylation of p-substituted phenols | Reinhard Langer | 1993-11-02 |
| 5250619 | Process for the preparation of high molecular weight polyamides | Hans-Detlef Heinz, Helmut Schulte | 1993-10-05 |