Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863641 | Preparation of acyl halides | Erika Irnich | 1989-09-05 |
| 4861742 | Bifunctional alkali metal compounds, preparation and use thereof as polymerization initiators | Klaus Bronstert, Siegbert Bohnet, Walter Himmele | 1989-08-29 |
| 4659866 | Continuous preparation of furmamide | Gerd Kaibel, Herwig Hoffmann, Rudolf Irnich, Otto Kratzer | 1987-04-21 |
| 4612392 | N-substituted acrylamide and methacrylamide derivatives and their preparation | Erich Penzel, Guenter Eckert | 1986-09-16 |
| 4551208 | Recovery of formic acid by distillation | Gerd Kaibel, Horst Hartmann, Rudolf Irnich, Horst Buelow | 1985-11-05 |
| 4490558 | Preparation of thioethers | — | 1984-12-25 |
| 4380631 | Preparation of caffeine | — | 1983-04-19 |
| 4370491 | Continuous preparation of acetic acid esters | Gerd Kaibel, Herwig Hoffmann, Rudolf Irnich, Eberhard Schaefer | 1983-01-25 |
| 4326073 | Production of anhydrous or substantially anhydrous formic acid | Dieter Wolf, Rudolf Schmidt, Ulrich Block, Hartmut Schoenmakers, Gerd Kaibel | 1982-04-20 |
| 4289676 | Binders, impregnating agents and coating agents based on an aqueous dispersion of an amide-containing copolymer | Bernhard Czauderna, Andreas Einwiller | 1981-09-15 |
| 4262140 | Production of anhydrous or substantially anhydrous formic acid | Gerd Kaibel, Herwig Hoffmann, Otto Kratzer, Rudolf Irnich | 1981-04-14 |
| 4250070 | Aqueous dispersions, containing hydrazine derivatives, of carbonyl-containing copolymers | Gregor Ley, Erich Penzel, Walter Rebafka | 1981-02-10 |