Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6069543 | Dielectric resonator capable of varying resonant frequency | Yohei Ishikawa, Toshiro Hiratsuka, Sadao Yamashita | 2000-05-30 |
| 6052087 | Antenna device and radar module | Yohei Ishikawa, Koichi Sakamoto, Hideaki Yamada | 2000-04-18 |
| 6016090 | Dielectric resonator apparatus and high-frequency module | Koichi Sakamoto, Sadao Yamashita, Toshihiro HIRATSUKA, Tomiya Sonoda, Shigeyuki Mikami | 2000-01-18 |
| 5986527 | Planar dielectric line and integrated circuit using the same line | Yohei Ishikawa, Toshiro Hiratsuka, Sadao Yamashita | 1999-11-16 |
| 5945894 | Dielectric resonator and filter utilizing a non-radiative dielectric waveguide device | Yohei Ishikawa, Toshiro Hiratsuka, Sadao Yamashita | 1999-08-31 |
| 5786740 | Dielectric resonator capable of varying resonant frequency | Yohei Ishikawa, Toshiro Hiratsuka, Sadao Yamashita | 1998-07-28 |
| 5764116 | Dielectric resonator and filter utilizing a nonradiative dielectric waveguide device | Yohei Ishikawa, Toshiro Hiratsuka, Sadao Yamashita | 1998-06-09 |