Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5250280 | Method of preparing storage-stable aqueous sodium peroxymonsulfate solutions | Birgit Bertsch-Frank, Axel Düker, Gert Rossler | 1993-10-05 |
| 5080881 | Method of preparing lower sodium polysulfides from higher sodium polysulfides and sodium | Walter Hinrichs, Herbert Hovestadt, Ludwig Lange, Erich Splett | 1992-01-14 |
| 5075098 | Method of preparing Na.sub.2 S (II) | Walter Hinrichs, Lutz Hippe, Ludwig Lange, Erich Splett | 1991-12-24 |
| 5039643 | Method for the production of catalytically active coatings for the production of hydrogen cyanide | Christian Hecht, Peter Panster, Petra Look-Herber | 1991-08-13 |
| 5039505 | Method of preparing Na.sub.2 S (III) | Walter Hinrichs, Lutz Hippe, Ludwig Lange, Erich Splett | 1991-08-13 |
| 5039506 | Method of preparing NA2S (I) | Walter Hinrichs, Lutz Hippe, Ludwig Lange, Erich Splett | 1991-08-13 |
| 4640832 | Process for the production of sodium polysulfides from the elements sodium and sulfur | Walter Hinrichs, Herbert Hovestadt, Ludwig Lange, Erich Splett | 1987-02-03 |
| 4629617 | Method for the preparation of hydrogen sulfide | Karl G. Voigt, Reinhold Reck, Peter Kleinschmit | 1986-12-16 |
| 4413021 | Process for bringing liquids into contact | Klaus Hentschel, Gerd Schreyer, Georg Franz | 1983-11-01 |
| 4391988 | Process for the production of aqueous sodium methioninate solutions | Manfred Spindler, Herbert Tanner, Friedhelm Geiger, Jurgen Martens | 1983-07-05 |
| 4391987 | Process for the production of aqueous sodium methioninate solutions | Manfred Spindler, Herbert Tanner, Friedhelm Geiger, Jurgen Martens | 1983-07-05 |
| 4377344 | Apparatus for bringing liquids in contact | Klaus Hentschel, Gerd Schreyer, Georg Franz | 1983-03-22 |
| 4328010 | Process for the recovery of pure cyanogen chloride | Werner Heimberger, Kurt Henkel, Norbert Kriebitzsch, Martin Petzold, Kurt Puschner | 1982-05-04 |
| 4320104 | Process for the production of hydrogen cyanide | Carl Voigt, Peter Kleinschmit | 1982-03-16 |
| 4281123 | Process for introducing three substituents in cyanuric chloride | Klaus Hentschel | 1981-07-28 |
| 4275203 | Process for the production of chloro-amino-s-triazines | Klaus Hentschel | 1981-06-23 |
| 4271297 | Process for the production of suspension or solutions of cyanuric chloride in organic solvents (I) | Klaus Hentschel, Gerd Schreyer | 1981-06-02 |
| 4271298 | Process for the production of suspensions or solutions of cyanuric chloride in water | Klaus Hentschel, Gerd Sohreyer | 1981-06-02 |
| 4271299 | Process for the production of 2-alkoxy-4,6-dichloro-s-triazines | Klaus Hentschel | 1981-06-02 |
| 4269979 | Process for the production of suspension or solution of cyanuric chloride in organic solvents (II) | Klaus Hentschel, Gerd Schreyer | 1981-05-26 |
| 4259487 | Process for the production of optionally substituted 2-mercapto-4,6-di-chloro-s-triazines | Klaus Hentschel | 1981-03-31 |