Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6916560 | Silicon nitride based substrate for semi-conductor components | Gerhard Wotting, Christian Hassler, Gunther Stollwerck | 2005-07-12 |
| 6576831 | Multicrystalline silicon having a low proportion of active grain borders | Gunther Stollwerck, Christian Hassler, Wolfgang Koch | 2003-06-10 |
| 6395661 | Sintered silicon nitride, components made therewith, specially valves, methods for the production and use thereof | Gerhard Wotting, Ernst Gugel, Hans Lindner | 2002-05-28 |
| 6013872 | Directionally solidified, multicrystalline silicon, a process for the production thereof and its use, and solar cells containing this silicon and a process for the production thereof | Christian Hassler, Wolfgang Krumbe, Horst Lange, Klaus Weber | 2000-01-11 |
| 5013393 | Process for the melting and directional solidification of metals | Ingo Schwirtlich | 1991-05-07 |
| 4919913 | Process for the production of solar silicon | Gunter Kurz, Martin Abels, Ingo Schwirtlich | 1990-04-24 |
| 4877596 | Process for the production of low carbon silicon | Ingo Schwirtlich, Wolfgang Koch | 1989-10-31 |
| 4790871 | Strip-shaped films of metals, a process and an apparatus for the production thereof and the use thereof | Ingo Schwirtlich | 1988-12-13 |
| 4755220 | Materials resistant to metal and salt melts, their production and their use | Werner Kannchen, Horst Lange, Ingo Schwirtlich | 1988-07-05 |
| 4670096 | Process and apparatus for producing semi-conductor foils | Ingo Schwirtlich | 1987-06-02 |
| 4561930 | Process for the production of coarsely crystalline silicon | Ingo Schwirtlich, Wolfgang Koch | 1985-12-31 |
| 4525334 | Process for the production of silicon | Martin Abels, Berthold Brazel | 1985-06-25 |
| 4400432 | Coating iron oxide particles for magnetic recording | Gunter Buxbaum, Ingo Pflugmacher, Franz Hund, Volker Hahnkamm | 1983-08-23 |
| 4344799 | Readily dispersible TiO.sub.2 pigment | Klaus Kohler, Hilmar Rieck, Fritz Rodi | 1982-08-17 |
| 4328040 | Process for the production of titanium dioxide pigments with high weather resistance | Peter Panek, Eckhard Bayer, Heribert Stutgens | 1982-05-04 |
| 4323596 | Coating iron oxide particles for magnetic recording | Gunter Buxbaum, Ingo Pflugmacher, Franz Hund, Volker Hahnkamm | 1982-04-06 |
| 4321237 | Treating hydrolysis residues from preparation of titanium dioxide | Peter Panek, Werner Kannchen | 1982-03-23 |
| 4318844 | Inorganic pigments with improved gloss and distribution in lacquer binders | Klaus Kohler, Heribert Stutgens, Eckhard Bayer, Klaus Nollen, Hans Sander | 1982-03-09 |
| 4318843 | Inorganic pigments with improved gloss and good distribution in lacquer binders | Klaus Kohler, Heribert Stutgens, Eckhard Bayer, Klaus Nollen, Hans Sander | 1982-03-09 |
| 4313913 | Production of hydrolyzable titanyl sulphate solution | Peter Panek, Walter Gutsche | 1982-02-02 |
| 4304758 | Hydrolyzable titanyl sulphate solutions by decomposition of ternary raw material mixtures | Hilmar Rieck, Walter Gutsche, Peter Panek | 1981-12-08 |
| 4186028 | Fluid pigment suspensions with phosphonocarboxylic acids | Gunther Teichmann, Gunter Linde, Gunter Lailach, Fritz Rodi | 1980-01-29 |