Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7981824 | Quartz glass blank and method for producing said blank | Ralf Takke, Bodo Kuehn, Bruno Uebbing, Rainer Koeppler | 2011-07-19 |
| 6548131 | Quartz glass crucible and process for the manufacture of the crucible | Heinz Fabian, Martin Arndt, Johann Leist, Udo Gertig | 2003-04-15 |
| 6209354 | Method of preparing silica glass article | Akira Fujinoki, Akihiko Sugama, Masaatsu Kataoka | 2001-04-03 |
| 5970746 | Method for preparing silica glass article | Akira Fujinoki, Akihiko Sugama, Masaatsu Kataoka | 1999-10-26 |
| 5866062 | Process for producing shaped bodies of silicon dioxide | Stephan Moritz | 1999-02-02 |
| 5831309 | Semiconductor element for an electronic or opto-electronic semiconductor component | Reinhold Uebbing | 1998-11-03 |
| 5790315 | Synthetic silica glass formed article for optical use | Akira Fujinoki, Akihiko Sugama, Masaatsu Kataoka | 1998-08-04 |
| 5736206 | Molded body of quartz glass and process for the production of a molded body of quartz glass | Stephan Moritz, Dietmar Hellmann | 1998-04-07 |
| 5674792 | Shaped body having a high silicon dioxide content and a process for producing such shaped bodies | Stephan Moritz | 1997-10-07 |
| 5643347 | Process for manufacture of silica granules | Waltraud Werdecker, Rolf Gerhardt, Hartwig Schaper | 1997-07-01 |
| 5443607 | Process for the production of a homogeneous ream-free body made of quartz glass | Heinrich Goy, Paul Sauerwein, Peter Hitzschke, Fritz Simmat, Rolf Takke +1 more | 1995-08-22 |
| 4956059 | Process for the purification of granular silicon dioxide | Helmut Leber, Klaus Reimann, Fritz Simmat | 1990-09-11 |
| 4842628 | Method of verifying a porous article made out of glass soot and furnace for carrying out the method | Karl Kreutzer, Fritz Simmat, Anton Steinkohl | 1989-06-27 |