Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7423759 | Wavelength determining device, wavelength meter equipped with the device, wavelength determining method, program, and recording medium | Shin Masuda | 2008-09-09 |
| 7324208 | Optical frequency measurement apparatus and optical frequency measurement method | — | 2008-01-29 |
| 7292116 | Temperature stabilizer and oscillating apparatus | Shin Masuda | 2007-11-06 |
| 7230691 | Photometer | — | 2007-06-12 |
| 7079231 | Optical network analyzer | Takashi Kido | 2006-07-18 |
| 6980288 | Optical network analyzer | Takashi Kido | 2005-12-27 |
| 6873405 | Propagation measuring apparatus and a propagation measuring method | Takashi Kido | 2005-03-29 |
| 5633959 | Polarization state changing apparatus and polarization degree measuring apparatus using the same | Eiji Kimura | 1997-05-27 |
| 5352885 | Frequency converter for varying the frequency of a local signal over a wide band | — | 1994-10-04 |
| 5222070 | Optical pulse oscillator and light frequency measuring apparatus using the same | — | 1993-06-22 |
| 5110211 | Optical interference signal extractor with device for reduced noise from optical light power variation | Jon R. Pawlik | 1992-05-05 |
| 4680540 | Device for measuring average frequencies | Toshiro Takahashi, Yohei Hirakoso | 1987-07-14 |
| 4620147 | Signal detector | — | 1986-10-28 |
| 4468614 | Average frequency measuring apparatus | Toshiro Takahashi | 1984-08-28 |
| 4310891 | Frequency measuring apparatus | — | 1982-01-12 |
| 4272719 | Electric field intensity measuring apparatus | Yuji Yoshino | 1981-06-09 |