Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5557401 | Optical masking apparatus | Masaaki Furuhashi | 1996-09-17 |
| 5500731 | Optical time domain reflectometer using ring laser light source | Mitsuhisa Sato, Shinichi Furukawa | 1996-03-19 |
| 5390018 | Optical pulse tester capable of displaying Raman or Rayleigh scattered light | Tatsuyuki Fujita, Toshiya Sato, Tsuneo Horiguchi | 1995-02-14 |
| 5361157 | Bidirectional light transmission system and optical device therefor | Tadasu Ishikawa, Kimiyuki Oyamada, Shuichi Fujisawa, Yozo Utsumi, Kunihara Takizawa | 1994-11-01 |
| 4563731 | Resonant type constant voltage supply apparatus | Toshiaki Sato, Masahiro Kosaka | 1986-01-07 |
| 4424556 | Self-oscillating DC to DC converter | Masahiro Kosaka, Katsuhiko Higashiyama | 1984-01-03 |