Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6436214 | Manufacturing method of polarization conversion elements | — | 2002-08-20 |
| 6411449 | Light-selective prism, projection display apparatus using the same, and method of manufacturing light-selective prism | Toshiaki Hashizume | 2002-06-25 |
| 6342971 | Projector using a light-selective prism | Toshiaki Hashizume | 2002-01-29 |