Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6603372 | Laminated notch filter and cellular phone using the same | Toshio Ishizaki, Hideyuki Miyake, Shoichi Kitazawa, Toru Yamada | 2003-08-05 |
| 6326865 | Dual-mode filter and design method therefor | Arun Chandra Kundu | 2001-12-04 |
| 6184760 | Half-wavelength resonator type high frequency filter | Kouji Wada, Toshio Ishizaki | 2001-02-06 |
| 4963844 | Dielectric waveguide-type filter | Yoshihiro Konishi, Kenichi Konno, Hideo Hikuma | 1990-10-16 |
| 4837535 | Resonant wave filter | Yoshihiro Konishi, Kenichi Konno | 1989-06-06 |