Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5614787 | Metal halide lamp having heat dam portion | Shigeki Ishihara, Naoki Masuda, Hirohisa Ota, Osamu Yogi | 1997-03-25 |
| 5525856 | Light irradiation device | Shigeki Ishihara | 1996-06-11 |
| 5451838 | Metal halide lamp | — | 1995-09-19 |
| 4832349 | Formed in place (FIP) gasket arrangement | Eiichi Matsumoto, Masahiko Teramoto | 1989-05-23 |