Issued Patents All Time
Showing 51–66 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4945167 | Preparation of N-hydroxypyrazoles | Ulf Baus, Erwin Hahn | 1990-07-31 |
| 4888412 | Tanning assistant | Klaus Ebel, Rolf Fikentscher, Dietrich Lach, Rolf Streicher, Ortwin Schaffer | 1989-12-19 |
| 4886882 | Hydroxyoxaalkylmelamines | Klaus Ebel | 1989-12-12 |
| 4754044 | Preparation of ketene O,N-acetals | Alfred Ruland | 1988-06-28 |
| 4670558 | Aminoalkylmelamines | Klaus Ebel | 1987-06-02 |
| 4668785 | Preparation of (2-hydroxyethyl)-melamines and their use as modifiers in the preparation of aminoplast resins | Klaus Ebel, Wolfram Weiss, Ludwig Lelgemann | 1987-05-26 |
| 4618676 | "Preparation of N,N',N""-tris-(2-hydroxypropyl)-melamine" | Klaus Ebel | 1986-10-21 |
| 4603224 | Preparation of ketene O,O-acetals | Alfred Ruland | 1986-07-29 |
| 4550173 | Ditriazolylvinyl phenyl ketones | Alfred Ruland, Ernst-Heinrich Pommer, Eberhard Ammermann | 1985-10-29 |
| 4539160 | Ketene O,O-acetals and their preparation | Alfred Ruland | 1985-09-03 |
| 4447448 | Wood preservative | Hans-Volker Borck | 1984-05-08 |
| 4395535 | Process for the manufacture of phenol-isobutyraldehyde condensation products | Juergen Nieberle, Karl-Clemens Peters, Heinz-Hilmar Bankowsky | 1983-07-26 |
| 4324793 | 4-Nitro-2-trichloromethylphenyl disulfides | Helmut Hagen, Ernst-Heinrich Pommer | 1982-04-13 |
| 4301157 | Thiolphosphoric acid-S-4-nitro-2-trichloromethylphenyl esters as fungicides | Helmut Hagen, Ernst-Heinrich Pommer, Hans Ziegler | 1981-11-17 |
| 4261924 | 4-Nitro-2-trichloromethylphenylsulfenamides | Helmut Hagen, Ernst-Heinrich Pommer, Hans Ziegler | 1981-04-14 |
| 4260532 | Aqueous isocyanate emulsions prepared with polyglycol and polymerized unsaturated acid amide | Adolph Segnitz, Otto Wittmann, Hermann Schatz | 1981-04-07 |