Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4934519 | Process for working up crude liquid vinyl acetate | Gunter Wolf, Hubert Lauer | 1990-06-19 |
| 4548913 | Catalyst, a process for its preparation and an isomerization process in the presence of this catalyst | Hubert Lauer, Josef Heinrich | 1985-10-22 |
| RE31381 | Process for the preparation of propylene oxide | Gunter Prescher, Gerd Schreyer, Otto Weiberg, Rolf Wirthwein, Helmut Waldmann +2 more | 1983-09-13 |
| RE30945 | Process for the preparation of propylene oxide | Guter Prescher, Gerd Schreyer, Otto Weiberg, Rolf Wirthwein, Helmut Waldmann +2 more | 1982-05-25 |
| 4313879 | Process for the manufacture of very pure .epsilon.-caprolactone | Herbert Klenk, Rolf Wirthwein, Gerd Siekmann | 1982-02-02 |
| 4293717 | Process for preparing aldehydes and diols | Helmut Waldmann, Wolfgang Swodenk | 1981-10-06 |
| 4244877 | Process for the preparation of hexahydrophthalic acid anhydride | Kurt Halcour, Helmut Waldmann | 1981-01-13 |
| 4220597 | Process for the preparation of anthraquinone | Kurt Halcourt, Paul Losacker, Manfred Martin, Norbert Schenk | 1980-09-02 |
| 4214105 | Process for the hydroxylation of phenol | Hermann Seifert, Helmut Waldmann, Wolfgang Swodenk | 1980-07-22 |
| 4182917 | Process for the preparation of polyhydric phenols | Hermann Seifert, Helmut Waldmann, Wolfgang Swodenk | 1980-01-08 |
| 4182918 | Process for the preparation of polyhydric phenols | Hermann Seifert, Helmut Waldmann, Wolfgang Swodenk | 1980-01-08 |