Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6011516 | Multiband antenna with a distributed-constant dielectric resonant circuit as an LC parallel resonant circuit, and multiband portable radio apparatus using the multiband antenna | Kazuo Minegishi, Shigeyoshi Yoshida, Ryo Ito | 2000-01-04 |
| 5933061 | Chip-type piezoelectric filter and filter circuit using such piezoelectric filter | Tatsuo Ogawa, Takeshi Sugiyama | 1999-08-03 |
| 5898346 | Dual-band nonreversible circuit device comprising two nonreversible circuit elements contained in a single housing to be operable in different frequency bands | Koji Kamei, Atsushi Furuta, Norihiko Ono, Shigeyoshi Yoshida | 1999-04-27 |
| 5726555 | Battery charger capable of displaying necessary charging time | — | 1998-03-10 |
| 5708351 | Battery pack with a lithium ion secondary battery | — | 1998-01-13 |
| 5467096 | Antenna for a radio communication apparatus | Koji Umeda, Takao Ono | 1995-11-14 |
| 5455595 | Antenna for portable radio communication apparatus | Yukio Yokoyama, Kazuo Sekiya | 1995-10-03 |
| 4864259 | Ladder-type electric filter circuit apparatus | Kenji Mizoe, Tatsuo Ogawa, Yasuhiko Nakagawa | 1989-09-05 |