Issued Patents All Time
Showing 26–50 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888412 | Tanning assistant | Klaus Ebel, Wolfgang Reuther, Dietrich Lach, Rolf Streicher, Ortwin Schaffer | 1989-12-19 |
| 4827014 | 2-Hydroxy-3-aminopropionic-n,n-diacetic acid and derivatives thereof, preparation thereof, and detergents containing same | Richard Baur, Felix Richter, Stefan Birnbach, Alfred Oftring, Ekhard Winkler +1 more | 1989-05-02 |
| 4816553 | Polyacetals, preparation thereof from dialdehydes and polyolcarboxylic acids, and use of same | Richard Baur, Alfred Oftring, Felix Richter, Wolfgang Trieselt, Paul Diessel +2 more | 1989-03-28 |
| 4705649 | Preparation of acyloxybenzenesulfonic acids and their alkali metal and alkaline earth metal salts | Wolf-Dieter Balzer, Hans-Heinrich Bechtolsheimer, Karl-Heinz Beyer, Johannes Perner, Rudi Widder +1 more | 1987-11-10 |
| 4704132 | After-treatment of dyeings with reactive dyes on cellulose fiber materials | Sigismund Heimann, Heinrich Mertens, Siegfried Schneider, Michele Vescia | 1987-11-03 |
| 4695412 | Preparation of acyloxybenzenesulfonic acids and their alkali metal and alkaline earth metal salts | Wolf-Dieter Balzer, Hans-Heinrich Bechtolsheimer, Karl-Heinz Beyer, Johannes Perner, Rudi Widder +1 more | 1987-09-22 |
| 4693848 | Preparation of alkali metal and alkaline earth metal salts of acyloxybenzenesulfonic acids | Wolf-Dieter Balzer, Hans-Heinrich Bechtolsheimer, Karl-Heinz Beyer, Johannes Perner, Rudi Widder +1 more | 1987-09-15 |
| 4670591 | Preparation of N-.alpha.-alkoxyethylformamides | Alfred Oftring, Erwin Hahn | 1987-06-02 |
| 4654432 | Preparation of 2-(hydroxymethyl)-acrylonitrile and 2-(hydroxymethyl)-acrylates | Erwin Hahn, Alexander Kud, Alfred Oftring | 1987-03-31 |
| 4654043 | Desizing cotton and cotton-containing fabrics | Werner Streit, Linda Witt, Heinz-Dieter Angstmann, Rolf Blanckenhorn | 1987-03-31 |
| 4652669 | 2-(1-hydroxycarbalkoxymethyl)-acrylonitriles and 2-(1-hydroxycarbalkoxymethyl)-acrylates and their preparation | Erwin Hahn, Alexander Kud, Alfred Oftring | 1987-03-24 |
| 4618371 | Coating materials which contain .alpha.-hydroxyketones as antiskimming agents | Wolfram Weiss, Wolf-Dieter Balzer, Guenther Immel, Hans-Josef Wolf | 1986-10-21 |
| 4614613 | Preparation of .beta.-N-aziridinopropionates | Siegfried Schneider, Erhard Klahr, Friedrich Reinert, Gunter Eckert, Adolf Stuebinger | 1986-09-30 |
| 4592758 | After-treatment of dyed textile materials of natural polyamides or nylons with quaternized piperazine condensate | Heinrich Mertens, Klaus Reincke, Michele Vescia | 1986-06-03 |
| 4592757 | Production of dyed or undyed wool with an antifelting finish: quaternized piperazine condensate | Heinrich Mertens, Klaus Reincke | 1986-06-03 |
| 4588531 | Preparation of alkali metal and alkaline earth metal salts of acyloxybenzenesulfonic acids | Wolf-Dieter Balzer, Hans-Heinrich Bechtolsheimer, Karl-Heinz Beyer, Johannes Perner, Rudi Widder +1 more | 1986-05-13 |
| 4537701 | Demulsifiers for breaking crude-oil emulsions and their use | Knut Oppenlaender, Egon Buettner, Wilhelmus Slotman, Erich Schwartz, Rudolf Mohr | 1985-08-27 |
| 4488879 | Process for dyeing textile materials of polyacrylonitrile: quaternized piperazine copolymer as basic dye retarder | Herbert Fleischer, Sigismund Heimann, Heinrich Mertens | 1984-12-18 |
| 4444959 | Water-soluble benzylated polyamidoamines | Guenter Frey, Werner Streit, Hans-Juergen Degen, Wolf Guender | 1984-04-24 |
| 4425238 | Removal of anionic compounds from water | Hans-Juergen Degen, Wolf Guender, Friedrich Linhart, Werner Auhorn, Guenter Frey +1 more | 1984-01-10 |
| 4383834 | Coloring of paper | Hans-Juergen Degen, Wolf Guender, Guenter Frey, Werner Streit, Klaus Wulz | 1983-05-17 |
| 4371674 | Water soluble crosslinked ethyleneimine grafted polyamidoamine | Otto Hertel, Emil Scharf, Jaroslav Melzer | 1983-02-01 |
| 4268402 | Liquefaction of aqueous textile softeners | Joachim Kurze, Georg Krusche | 1981-05-19 |
| 4224421 | Water-soluble, crosslinked nitrogen-containing condensation products | Werner Streit, Karl Gans, Gerhard Welzel, Klaus Glaser, Emil Schaefer | 1980-09-23 |
| 4200733 | Iodine-containing block copolymers of 1,4-butylene oxide and ethylene oxide | Johannes Perner, Norbert Greif, Paul Diessel | 1980-04-29 |