Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5311606 | Optical filter and optical amplifier employing said optical filters | Masanori Iida, Tetsuji Miwa | 1994-05-10 |
| 5154785 | Process for producing a zirconia refractory heating element | Katsuhiro Tabata, Masahiro Hayase, Hajime Asami, Kenji Mitsui | 1992-10-13 |
| 5073689 | Zirconia refractory heating element | Katsuhiro Tabata, Masahiro Hayase, Hajime Asami, Kenji Mitsui | 1991-12-17 |
| 5007709 | Diffraction grating and manufacturing method thereof | Masanori Iida, Kiyokazu Hagiwara, Minoru Nishioka, Koichi Murase | 1991-04-16 |
| 4850692 | Semiconductor light position detector for rangefinder | Yoshiaki Hirao, Ryuichiro Kuga, Shusuke Ono, Yoshitomi Nagaoka, Shinji Hataji +1 more | 1989-07-25 |
| 4758764 | Light-emitting device for automatic focus adjustment apparatus | Ryuichiro Kuga, Yoshiaki Hirao, Yoshitomi Nagaoka | 1988-07-19 |
| 4673274 | Automatic focusing apparatus for camera | Yoshitomi Nagaoka, Yoshiteru Matsuda, Yoshiaki Hirao, Ryuichiro Kuga | 1987-06-16 |