Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11337431 | Casing holding device for an apparatus for filling tubular cases | Klaus Hiller, Johann Walger | 2022-05-24 |
| 7008931 | Anti-inflammatory and healing medicine based on laminarin sulphate | Jean-Claude Yvin, Susanne Alban | 2006-03-07 |
| 6475819 | Method for formation and production of matrices of high density light emitting diodes | — | 2002-11-05 |
| 6395309 | Use of an extract of Alchemilla vulgaris to inhibit angiogenesis | Dietrich Paper | 2002-05-28 |
| 5869736 | Oxidation in the Witten-Hercules process for preparing dimethyl terephthalate | Stefan Jelko, Anton Schoengen, Hermann-Josef Korte, Hans-Guenther Srebny, Thomas Jostmann +1 more | 1999-02-09 |
| 5705025 | Method for dry etching of a semiconductor substrate | Ralf Dietrich | 1998-01-06 |
| 5480570 | Low coercive iron oxide pigments and a process for their preparation | Karl-Heinz van Bonn, Hendrik Kathrein | 1996-01-02 |
| 5195150 | Optoelectronic device for outfeed and infeed of radiation | Bernhard Stegmueller, Jochen Heinen | 1993-03-16 |
| 5075091 | Process for the preparation of silicon nitride | Lothar Schonfelder | 1991-12-24 |
| 5073848 | Power distribution system | Robert Louis Steigerwald, Peter M. Koninsky | 1991-12-17 |
| 5066473 | Silicon nitride powders of low isoelectric point and processes for their production | Ulrike Pitzer, Benno Laubach | 1991-11-19 |
| 5039632 | SI C powder, a process for its production and its use | Ralf Riedel, Gerd Passing, Gunter Petzow, Wolfgang Krumbe | 1991-08-13 |
| 5030434 | Silicon nitride powders with improved surface properties and processes for their preparation | Ulrike Pitzer, Benno Laubach | 1991-07-09 |
| 4983371 | Silicon nitride powder of low oxygen content | Ulrike Pitzer, Benno Laubach | 1991-01-08 |
| 4980322 | Sinterable SI.sub.3 N.sub.4 powders containing sintering additives and a process for their preparation | Ulrike Wickel, Benno Laubach | 1990-12-25 |
| 4948762 | Process for the preparation of finely divided carbides and nitrides from ceramic precursor-compounds | Wolfgang Krumbe, Benno Laubach | 1990-08-14 |
| 4922404 | Method and apparatus for gating of synchronous rectifier | Gerald W. Ludwig | 1990-05-01 |
| 4845060 | Sinterable Si.sub.3 N.sub.4 powder and a process for its preparation | Ulrike Wickel, Benno Laubach | 1989-07-04 |
| 4798714 | Process for the preparation of silicon nitride low in carbon content | Lothar Schonfelder | 1989-01-17 |
| 4681637 | Process for the production of yellow-brown zinc ferrite pigments | Jakob Rademachers, Karlheinz Turban, Werner Fuhr, Bernd Holle | 1987-07-21 |
| 4676838 | Lamellar iron oxide pigments, a process for the production thereof and the use thereof | Lothar Schonfelder, Heinrich Heine | 1987-06-30 |
| 4404254 | Production of lamellar iron oxide pigments | Franz Hund | 1983-09-13 |
| 4367362 | Process for the isomerization of N-alkenes | Friedrich Heinrich, Hans-Josef Ratajczak | 1983-01-04 |
| 4335018 | Catalyst for the production of maleic anhydride | Franz Nierlich, Hans-Josef Ratajczak | 1982-06-15 |
| 4268448 | Process for the production of maleic anhydride | Franz Nierlich, Hans-Josef Ratajczak | 1981-05-19 |