Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE45148 | Image display apparatus with relaying optical system, reflective optical component and phase difference optical component | Hiroshi Mukawa | 2014-09-23 |
| 7699473 | Image display apparatus with relaying optical system, reflective optical component and phase difference optical component | Hiroshi Mukawa | 2010-04-20 |
| 6937401 | Projection lens | — | 2005-08-30 |
| 6547421 | Display apparatus | — | 2003-04-15 |
| 6473244 | Projection lens | — | 2002-10-29 |
| 6144503 | Projection lens and focus adjusting method for projection lens | — | 2000-11-07 |
| 5886823 | Optical visual apparatus | — | 1999-03-23 |
| 5557472 | Fast aspherical lens system | Takayuki Ito | 1996-09-17 |
| 5513045 | Fast aspherical lens system | Takayuki Ito | 1996-04-30 |
| 5477389 | Fast ultra-wide angle lens system | Takayuki Ito | 1995-12-19 |
| 5371630 | Zoom lens system | Takayuki Ito | 1994-12-06 |