| 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 |