Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061162 | Method for producing a tube of quartz glass by elongating a hollow cylinder of quartz glass | — | 2011-11-22 |
| 7891213 | Vertical drawing method for producing a cylindrical glass body and device for carrying out said method | Oliver Ganz, Harald Hain, Eric Emmert | 2011-02-22 |