Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7880972 | Projection optical system | Masayuki Imaoka, Jun Ishihara | 2011-02-01 |
| 7744226 | Projection type image display apparatus | Atsushi Matsuura, Satoshi Onishi, Kohei Watasru, Takashi Ohta | 2010-06-29 |
| 7503661 | Projection optical system | Masayuki Imaoka, Jun Ishihara | 2009-03-17 |
| 7411737 | Projection optical system | Masayuki Imaoka, Jun Ishihara, Tomiei Kuwa | 2008-08-12 |
| 7012758 | Projection optical system and projecting apparatus provided with same | Kohtaro Hayashi, Shigeru Sawamura | 2006-03-14 |
| 6789902 | Projection optical system and projector using the same | Kohtaro Hayashi, Tomokazu Taguchi | 2004-09-14 |
| 6791750 | Polarization beam splitter | Kohtaro Hayashi | 2004-09-14 |
| 6761458 | Rear projection optical system | Shigeyoshi Sakata | 2004-07-13 |