Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5158752 | Plant for producing ammonium polyphosphate | Thomas Staffel, Gunther Schimmel, Horst Buhl | 1992-10-27 |
| 4834960 | Process for purifying phosphorous acid | Gunther Schimmel, Bernhard Hofmann | 1989-05-30 |
| 4749758 | Process for the preparation of copolymers of vinylphosphonic acid and (meth) acrylic acid in aqueous solution | Walter Dursch, Werner Gohla, Friedrich Engelhardt, Ulrich Riegel | 1988-06-07 |
| 4728443 | Textile softening detergent composition | Hans-Peter Rieck, Werner Gohla | 1988-03-01 |
| 4473509 | Process for making phosphonic anhydrides | Werner Pieper | 1984-09-25 |
| 4427603 | Process for making phosphonic acid ester chlorides | Werner Pieper | 1984-01-24 |
| 4397791 | Process for reacting alcohols and/or phenols with phosphorus pentasulfide | Werner Krause, Werner Klose | 1983-08-09 |
| 4371509 | Oxidizing phosphorus compounds with chlorosulfonic acid | — | 1983-02-01 |
| 4242511 | Production of amine salts of acid O,S-dialkylthiophosphoric acid | — | 1980-12-30 |