Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6459711 | Optical semiconductor device | Yuzo Shimizu, Toru Tsuruta, Masanori Hirose | 2002-10-01 |
| 6242760 | Optical semiconductor device with enhanced light reception | Yuzo Shimizu, Toru Tsuruta, Masanori Hirose | 2001-06-05 |
| 5644138 | Electron beam exposure apparatus and a method for electron beam exposure | — | 1997-07-01 |
| 4625121 | Method of electron beam exposure | — | 1986-11-25 |