Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6079225 | Method for the production of a quartz glass blank and apparatus suitable therefor | Klaus Ruppert | 2000-06-27 |
| 5788730 | Process and apparatus for the production of a quartz glass blank | Klaus Ruppert | 1998-08-04 |
| 5738702 | Apparatus for holding a hollow cylinder of silicon dioxide soot | Klaus Ruppert, Uwe Christiansen, Michael Hünermann, Klaus Dittmer | 1998-04-14 |
| 5667547 | Method for manufacture of quartz glass plates | Uwe Christiansen | 1997-09-16 |
| 5665132 | Process for the sintering of hollow cylinders of silicon dioxide soot | Klaus Ruppert, Uwe Christiansen, Michael Hünermann, Klaus Dittmer | 1997-09-09 |
| 4842628 | Method of verifying a porous article made out of glass soot and furnace for carrying out the method | Karl Kreutzer, Fritz Simmat, Wolfgang Englisch | 1989-06-27 |
| 4676814 | Method for the continuous building of a hollow cylindrical soot body having no internal support | Dieter Ross, Hans-Ulrich Bonewitz, Uwe Christiansen, Karl-Friedrich Klein, Albert Muhlich +4 more | 1987-06-30 |
| 4447130 | Light-weight mirror blank for astronomical purposes and method of making a supporting framework for such blanks | Uwe Christiansen, Karlheinz Rau, Bruno Streb | 1984-05-08 |