Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4348240 | Process for deactivating soluble metal cations in iron oxide pigments | Arvind S. Patil, Siegfried Kersten | 1982-09-07 |
| 4319055 | Process for removing formaldehyde from aqueous solutions of but-2-yne-1,4-diol | Walter Rebafka, Gerd Heilen | 1982-03-09 |
| 4273945 | Preparation of saturated aliphatic, cycloaliphatic and araliphatic aldehydes | Gerd Heilen, Axel Nissen, Wolfgang Koernig, Michael Horner, Guenter Boettger | 1981-06-16 |
| 4239657 | Manufacture of carbonyl compounds | Axel Nissen, Gerd Heiien, Ekkehard Sapper, Arnold Wittwer | 1980-12-16 |
| 4235823 | Preparation of diketones | Christian Dudeck, Gunter Lehmann, Karl-Heinz Ross, Norbert Petri, Hans Diem +2 more | 1980-11-25 |
| 4233246 | Manufacture of aliphatic hydroxycarbonyl compounds etherified with aliphatic groups | Christian Dudeck, Gunter Lehmann, Norbert Petri, Hans Diem, Bernd Meissner +2 more | 1980-11-11 |
| 4229590 | Preparation of alkyl pyruvates | Christian Dudeck, Gunter Lehmann, Bernd Meissner, Hans Diem, Norbert Petri +1 more | 1980-10-21 |
| 4224254 | Preparation of aromatic and araliphatic aldehydes | Wolfgang Sauer, Christian Dudeck, Norbert Petri | 1980-09-23 |
| 4212825 | Aldol condensation and hydrogenation process using a catalyst of nickel and cobalt together with zinc oxide and another metal of groups VIII, IIb, IIIa, IVa and Va of the periodic table | Axel Nissen, Gerd Heilen, Ekkehard Sapper, Arnold Wittwer | 1980-07-15 |
| 4192820 | Preparation of 3-methyl-2-buten-1-al | Bernd Meissner, Otto Woerz, Christian Dudeck, Hans Diehm | 1980-03-11 |
| 4188344 | Production of 4-(m,m'-ditert.-butyl-p-hydroxyphenyl)-butan-2-ones | Roman Fischer, Wolfgang Koernig, Bernd Meissner | 1980-02-12 |