Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5777032 | Ocular lens and a method for its production | Yasuhiro Yokoyama, Sadayasu Tanikawa, Shoji Ichinohe, Toshio Yamazaki | 1998-07-07 |
| 5556929 | Ocular lens material | Yasuhiro Yokoyama, Akinori Okumura, Shoji Ichinohe, Toshio Yamazaki | 1996-09-17 |
| 4987527 | Perspective display device for displaying and manipulating 2-D or 3-D cursor, 3-D object and associated mark position | Tomoyuki Hamada, Kohzi Kamezima, Ikuo Takeuchi | 1991-01-22 |