Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5468838 | Process for the preparation of polysuccinimide, polyaspartic acid and their salts | Gerd Schmitz | 1995-11-21 |
| 5053421 | Di-styrl-phenyl-triglycol ether as crystallization inhibitor | Heinz-Otto Horstmann, Ulrich Engelhardt, Karl Reizlein, Rolf-Jurgen Singer, Klaus Wangermann +3 more | 1991-10-01 |
| 4994089 | Carrier mixture for the dyeing of polyester materials: n-alkylphthalimide and aromatic ester or ether | Frank Bartkowiak, Hans Schulze, Wolf-Dieter Schroer, Karlhans Jakobs, Willi Schossler | 1991-02-19 |
| 4839461 | Polyaspartic acid from maleic acid and ammonia | — | 1989-06-13 |
| 4627929 | Stabilized lubricants based on polyethers | Hans-Josef Buysch, Siegfried Kussi | 1986-12-09 |
| 4547199 | Use of aralkyl polyalkylene glycol ethers for the preparation of aqueous coal slurries | Jan Mazanek, Hans-Jurgen Botsch, Gottfried Schneider | 1985-10-15 |
| 4468349 | Process for the preparation of solutions of cationic azo dyestuffs | Karl Linhart, Harald Gleinig, Kurt Breig | 1984-08-28 |
| 4458080 | Imidazoline derivatives | Klaus Böde, Wilfried Kortmann | 1984-07-03 |
| RE31610 | Modifying mortars of inorganic binding agents with alkylated sulphonated phenol-formaldehyde condensation product | Kurt Schaupp, Gunther Reitz | 1984-06-26 |
| 4432899 | Preparing concentrated azo dye solutions using nitrite salt as both coupling component and diazotizing agent | Karl Linhart, Harald Gleinig | 1984-02-21 |
| 4391718 | Sulphonated mono-hydric diaryl phenol formaldehyde condensates, their preparation, their use as dispersing agents and formulations containing them | Gunther Reitz, Karlhans Jakobs | 1983-07-05 |
| 4330334 | Modifying mortars of inorganic binding agents with alkylated sulphonated phenol-formaldehyde condensation product | Kurt Schaupp, Gunther Reitz | 1982-05-18 |
| 4324732 | Process for the preparation of monoaroylated 1,4-diaminoanthraquinones | Norbert Majer | 1982-04-13 |
| 4322312 | Process for purification of non-ionic emulsifiers | — | 1982-03-30 |
| 4297107 | Fuels and their use | — | 1981-10-27 |
| 4295859 | Fuels and heating oils, a process for their preparation and their use | — | 1981-10-20 |
| 4280960 | Phosphonic acid esters | Konrad Nonn, Klaus Walz, Karlheinz Wolf | 1981-07-28 |
| 4279614 | Process for dyeing polyester-containing materials | Hans Schulze, Klaus Walz, Karlhans Jakobs | 1981-07-21 |
| 4258448 | Method of dispersing, emulsifying materials with phosphoric acid esters | Gunther Reitz, Karlhans Jakobs | 1981-03-31 |
| 4246172 | Cationic dyestuffs organophosphonic acid salts of quaternary ammonium alkylene amino azo dyes | Udo-Winfried Hendricks | 1981-01-20 |
| 4245083 | Phenolic formaldehyde-salicylic acid condensation products | Gunther Reitz, Artur Haus, Martin Meister | 1981-01-13 |
| 4233214 | Cationic azo dyestuffs with a hydroxyalkylated ammonium group | — | 1980-11-11 |