Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6069281 | Process for producing organic nitrogen compounds, special organic nitrogen compounds and mixtures of such compounds and their use as fuel and lubricant additives | Wolfgang Siegel, Boris Breitscheidel, Wolfgang Harder, Harald Schwahn, Wolfgang Reif | 2000-05-30 |
| 6005144 | Reaction products of polyisobutenes and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen and their use as fuel and lubricant additives | Eckhard Hickmann, Klaus Ebel, Wolfgang H. H. Gunther, Hans Peter Rath, Harald Schwahn | 1999-12-21 |
| 5980594 | Use of reaction products of polyolefins and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen as additives for fuels | Eckhard Hickmann, Klaus Ebel, Wolfgang H. H. Gunther, Hans Peter Rath, Harald Schwahn | 1999-11-09 |
| 5972856 | Reaction products of polyisobutenes and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen and their use as fuel and lubricant additives | Eckhard Hickmann, Klaus Ebel, Wolfgang H. H. Gunther, Hans Peter Rath, Harald Schwahn | 1999-10-26 |
| 5879420 | Reaction products of polyisobutenes and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen and their use as fuel and lubricant additives | Eckhard Hickmann, Klaus Ebel, Wolfgang H. H. Gunther, Hans Peter Rath, Harald Schwahn | 1999-03-09 |
| 5679863 | Preparation of carbonylphosphine oxides | Martin Fischer, Eckhard Hickmann, Jochen Schroeder, Beate Trentmann | 1997-10-21 |
| 5504236 | Preparation of .alpha.-carbonylphosphine oxides | Martin Fischer, Eckhard Hickmann, Jochen Schroeder, Beate Trentmann | 1996-04-02 |
| 5296636 | Preparation of 2,4,6-trimethylbenzoic acid | Wolfgang Siegel, Jochen Schroeder | 1994-03-22 |
| 5225602 | Phenylacetaldehydes and the preparation of phenylacetaldehydes | Wolfgang Hoelderich, Norbert Goetz, Leopold Hupfer, Hans Theobald, Bernd Wolf | 1993-07-06 |
| 4909985 | Tarnish-resistant precious-metal alloys for dentistry | Wolfgang Kuerten | 1990-03-20 |
| 4870100 | Pyrethroids and their use for controlling pests | Bernd Wolf, Hans Theobald, Rainer Becker, Norbert Goetz, Walter Himmele | 1989-09-26 |
| 4820821 | Novel pyridazinone-imines and their physiologically tolerated addition salts with acids, their preparation and therapeutic agents containing these compounds | Marco Thyes, Rainer Schlecker, Albrecht Franke, Franz Reicheneder, Dora I. Reicheneder +5 more | 1989-04-11 |
| 4760056 | Oximinophosphoric acid derivatives, and their use for controlling pests | Rainer Buerstinghaus, Franz Merger, Karl Kiehs, Heinrich Adolphi | 1988-07-26 |
| 4565870 | Process for the preparation of a salt of 1-(.gamma.-halopropyl)-1,2,3,4-.beta.-carbolines | — | 1986-01-21 |
| 4324725 | Preparation of 5-(2,2-dihalovinyl)-4,4-dialkyl-tetrahydro-furan-2-ones | Martin Fischer, Klaus Halbritter | 1982-04-13 |
| 4320062 | Preparation of 5-(2,2,2-trihaloethyl)-dialkyl-tetrahydrofuran-2-ones | Martin Fischer, Klaus Halbritter | 1982-03-16 |
| 4268445 | Preparation of bicyclic enol-ethers, and novel ethers of 2-(3-hydroxyprop-l-yl)-cycloalkanones | Frank Thoemel, Axel Nuerrenbach, Werner Hoffman, Franz Wenisch, Hartwig Fuchs | 1981-05-19 |
| 4255191 | Gold-silver alloys with good tarnish resistance for the dental art | — | 1981-03-10 |