Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6413682 | Synthetic quartz glass substrate for photomask and making method | Hisatoshi Otsuka | 2002-07-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6413682 | Synthetic quartz glass substrate for photomask and making method | Hisatoshi Otsuka | 2002-07-02 |