Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4971772 | High-purity lining for an electric low shaft furnace | Friedrich-Wilhelm Schulze, Benedikt Strake | 1990-11-20 |
| 4803188 | Heterogeneous catalyst containing silicon dioxide | Hans-Peter Urbach, Karl-Heinz Eisenrith | 1989-02-07 |
| 4643833 | Method for separating solid reaction products from silicon produced in an arc furnace | Friedrich-Wilhelm Schulze | 1987-02-17 |
| 4497675 | Process for the manufacture of substrates from carbon-coated silicon dioxide fabric that can be used for large-surface silicon bodies | Karl-Heinz Eisenrith, Hans-Peter Urbach | 1985-02-05 |
| 4460556 | Method for producing high purity Si for solar cells | Karl-Heinz Eisenrith, Friedrich-Wilhelm Schulze, Hans-Peter Urbach | 1984-07-17 |
| 4410346 | Method for manufacturing distributor and mixer elements for optical communication technology | Karl-Heinz Eisenrith | 1983-10-18 |
| 4407668 | Apparatus and process for producing a cladded optical fiber having a longitudinal side coupling zone | Franz Auracher | 1983-10-04 |
| 4355863 | Cladded optical fiber having a longitudinal side coupling zone | Franz Auracher | 1982-10-26 |
| 4311726 | Method for the manufacture of a high-tensile strength optical waveguide | Heinz Hacker, Josef Grabmaier, Nikolaos Douklias | 1982-01-19 |
| 4302233 | Method for the manufacture of a high-tensile-strength light wave-guide | Hellmut Ahne, Friedrich Weidinger, Roland Rubner | 1981-11-24 |
| 4299609 | Optical unit having a longitudinal side coupling zone | Franz Auracher, Hans-Hermann Witte | 1981-11-10 |
| 4298245 | Waveguides with a low birefringence | Alfred Papp | 1981-11-03 |
| 4294811 | Process for manufacturing Si useful for semiconductor components from quartz sand | Josef Grabmaier | 1981-10-13 |
| 4259100 | Double crucible system for the production of light conducting fibers | Josef Grabmaier | 1981-03-31 |
| 4251250 | Process and apparatus for the production of light conducting fibers | Karl-Heinz Eisenrith | 1981-02-17 |
| 4243296 | Optical unit having a longitudinal side coupling zone | Franz Auracher, Hans-Hermann Witte | 1981-01-06 |
| 4213672 | Light waveguide with a high tensile strength | Nikolaos Douklias, Heinz Hacker, Guenter Zeidler | 1980-07-22 |
| 4193782 | Device for drawing a group of cladded light conducting fibers | Josef Grabmaier, Karl-Heinz Eisenrith | 1980-03-18 |