Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4705843 | Process for the production of substituted polyaryl ethers | Gunter Stammann, Johann Grolig | 1987-11-10 |
| 4661646 | Process for the preparation of 1-butene-3,4-diol | Rolf Schalenbach | 1987-04-28 |
| 4593116 | Process for the production of urethanes | Gunter Stammann, Johann Grolig, Robert Becker | 1986-06-03 |
| 4582923 | Process for the production of urethanes | Gunter Stammann, Robert Becker, Johann Grolig | 1986-04-15 |
| 4562274 | Process for the preparation and isolation of polyglycidyl compounds | Gebhard Rauleder, Ludwig Bottenbruch, Hans-Joachim Traenckner, Wolfgang Gau | 1985-12-31 |
| 4486606 | Process for preparing pinacolone | Gebhard Rauleder | 1984-12-04 |
| 4436943 | Process for the preparation of 2,2-dicyclohexenylpropane | Gebhard Rauleder | 1984-03-13 |
| 4410743 | Process for the preparation of 2,3-dimethylbutane-2,3-diol | Klaus G. Wilms, Johann Grolig | 1983-10-18 |
| RE31381 | Process for the preparation of propylene oxide | Gunter Prescher, Gerd Schreyer, Otto Weiberg, Rolf Wirthwein, Hermann Seifert +2 more | 1983-09-13 |
| 4387252 | Process for the preparation of polyhydric phenols | Christoph Jupe, Hermann Seifert | 1983-06-07 |
| 4381973 | Process for the preparation of pyrocatechol and hydroquinone | Christoph Jupe, Jurgen Baumert, Gunther Schummer | 1983-05-03 |
| 4370275 | Process for the preparation of carbonic acid esters | Gunter Stammann, Robert Becker, Johann Grolig | 1983-01-25 |
| 4369096 | Process for the purification of epoxides | Hermann Seifert, Rolf Wirthwein, Willi Hofen | 1983-01-18 |
| 4362604 | Process for the preparation of pyrocatechol and hydroquinone | Christoph Jupe, Jurgen Baumert, Gunther Schummer | 1982-12-07 |
| 4360682 | Stabilizing caprolactones with dihydroxybenzenes | Herbert Klenk, Rolf Wirthwein, Hermann Seifert | 1982-11-23 |
| 4341709 | Preparation of .epsilon.-caprolactone | Willi Hofen, Herbert Klenk, Gerd Schreyer, Otto Weiberg, Hermann Seifert +2 more | 1982-07-27 |
| RE30945 | Process for the preparation of propylene oxide | Guter Prescher, Gerd Schreyer, Otto Weiberg, Rolf Wirthwein, Hermann Seifert +2 more | 1982-05-25 |
| 4324925 | Process for the preparation of polyhydric phenols | Christoph Jupe, Hermann Seifert | 1982-04-13 |
| 4321143 | Treating effluent with peroxide and iron | Klaus G. Wilms | 1982-03-23 |
| 4294703 | Hydrogen peroxide treatment of effluent | Klaus G. Wilms | 1981-10-13 |
| 4293717 | Process for preparing aldehydes and diols | Wulf Schwerdtel, Wolfgang Swodenk | 1981-10-06 |
| 4244877 | Process for the preparation of hexahydrophthalic acid anhydride | Kurt Halcour, Wulf Schwerdtel | 1981-01-13 |
| 4214105 | Process for the hydroxylation of phenol | Hermann Seifert, Wulf Schwerdtel, Wolfgang Swodenk | 1980-07-22 |
| 4212809 | Process for the preparation of 5-(oxiranylmethyl)-1,3-benzodioxole | Gebhard Rauleder, Volker Mues, Hermann Seifert | 1980-07-15 |
| 4199593 | Combating arthropods with 5-(3,4-methylenedioxybenzyl)-dioxolanes and synergistic compositions therewith | Volker Mues, Wolfgang Behrenz, Gebhard Rauleder | 1980-04-22 |