Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6886364 | Method for producing quartz glass crucible | Shigeo Mizuno | 2005-05-03 |
| 6841210 | Multilayer structured quartz glass crucible and method for producing the same | Hiroshi Matsui | 2005-01-11 |