Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4960928 | 1-Hydroxy-omega-(alkyl- or arylphosphinico)alkane-1,1-diphosphonic acids, salts thereof, and processes for the preparation of these compounds | Helmut Klemp | 1990-10-02 |
| 4915865 | Dimensionally stable alkaline cleansing agents of low density, and a process for their preparation | Lothar Westermann, Hannsjorg Ulrich | 1990-04-10 |
| 4752648 | Process for making chlorophosphines and thiophosphinic acid chlorides, and 9-chloro-9-thioxo-9-phosphabicyclononanes | Norbert Weferling | 1988-06-21 |
| 4418019 | Process for the manufacture of 1-aminoalkane-1,1-diphosphonic acids | Theodor Auel | 1983-11-29 |
| 4410466 | Process for extractively separating a mixture containing phosphoric acid monoalkylesters into its components | Gunther Schimmel | 1983-10-18 |
| 4397791 | Process for reacting alcohols and/or phenols with phosphorus pentasulfide | Werner Krause, Jurgen Grosse | 1983-08-09 |
| 4258022 | Continuous production of phosphine | Georg Elsner, Christian May, Gero Heymer | 1981-03-24 |