Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4952563 | Waterfree application form of low molecular weight alkali huminates | Bernhard Seubert, Helmut Beilharz, Gunter Jeromin, Ulrich Spitaler | 1990-08-28 |
| 4946829 | Process and huminate fraction | Bernhard Seubert, Ulrich Spitaler | 1990-08-07 |
| 4921840 | Method for the preparation of low molecular weight alkali metal huminates | Bernhard Seubert, Helmut Beilharz, Gunter Jeromin, Ulrich Spitaler | 1990-05-01 |
| 4918059 | Low molecular weight alkali metal huminates, method for their preparation and applications thereof | Bernhard Seubert, Helmut Beilharz, Gunter Jeromin, Ulrich Spitaler | 1990-04-17 |
| 4719298 | Side chain chlorination process of heterocycles | Gunter Jeromin, Winfried Orth | 1988-01-12 |
| 4661115 | Hair dyeing agents | Winfred Orth, Karl-Heinz Schrader | 1987-04-28 |
| 4659830 | Process for the production of zinc 2-mercaptopyridine N-oxide | Manfred Maurer, Winifried Orth | 1987-04-21 |
| 4659846 | Preparation of 2,5-diloweralkyl-1.4:3,6-dianhydrosorbitols | Manfred Maurer, Winfried Orth | 1987-04-21 |
| 4632991 | Process for production of zinc 2-mercaptopyridine-n-oxide | Manfred Maurer, Winifried Orth | 1986-12-30 |
| 4582910 | Method for preparation of 4-halogenonaphthalic acid anhydrides | Winfried Orth, Emmerich Pastorek | 1986-04-15 |
| 4567272 | Pyrrole containing 2-aminonitropyridine derivatives | Winfried Orth | 1986-01-28 |
| 4564700 | Process for the preparation of fluorene-9-carboxylic acid | Winfried Orth, Emmerich Pastorek | 1986-01-14 |
| 4549024 | Oxidation of quinoline to quinolinic acid | Winfried Orth, Emmerich Pastorek | 1985-10-22 |
| 4546190 | Method for producing 3,5,6-trichloro-1H-pyridine-2-on | Winfried Orth | 1985-10-08 |
| 4529800 | Novel process for the preparation of 2-halo-3-nitro-6-alkoxy-pyridines | Winfried Orth | 1985-07-16 |
| 4493935 | Preparation of 1H-pyrrol-2-acetic acid esters | Winfried Orth | 1985-01-15 |
| 4377699 | 5-Chloro-indole preparation | Manfred Maurer, Winfried Orth | 1983-03-22 |
| 4357277 | Novel process for the preparation of N,N'-bisacyl hydrazides | Winfried Orth, Fritz Lange | 1982-11-02 |
| 4332728 | Process for the preparation of bisacyl hydrazines | Winfried Orth, Fritz Lange | 1982-06-01 |
| 4256892 | Preparation of bis-2-pyridyl-disulfides | Manfred Maurer, Winfried Orth | 1981-03-17 |
| 4228083 | Process for the production of .beta.-(5-nitro-2-furyl)-acrolein | Emmerich Pastorek, Winfried Orth | 1980-10-14 |