Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11350349 | Base unit and repeater | Hiroyuki Ishihara, Yoshizumi Yamashita | 2022-05-31 |
| 10616394 | Cordless telephone, base unit, and repeater | Hiroyuki Ishihara, Hirokazu Sugiyama | 2020-04-07 |
| 10251141 | Communication apparatus and communication system | Hiroyuki Ishihara | 2019-04-02 |
| 10149297 | Communication device | Hiroyuki Ishihara, Shinji Ikegami, Hirokazu Sugiyama, Takashi Enoki, Kazuhide Shibata +1 more | 2018-12-04 |
| 9781647 | Communication system for transferring data between DECT terminal and wide area wireless base station | Hiroyuki Ishihara, Shinji Ikegami, Hirokazu Sugiyama, Takashi Enoki, Kazuhide Shibata +1 more | 2017-10-03 |
| 9730172 | Base station device and method of updating counter of base station device | Hiroyuki Ishihara, Koichi Yamamoto, Katsunori Takahashi | 2017-08-08 |
| 9699750 | Synchronization establishment method | Hiroyuki Ishihara, Koichi Yamamoto, Katsunori Takahashi | 2017-07-04 |
| 9642133 | Communication apparatus, communication system, and communication method | Hiroyuki Ishihara, Koichi Yamamoto, Katsunori Takahashi | 2017-05-02 |
| 9386548 | Base station apparatus, communication system and synchronization method | Hiroyuki Ishihara, Yutaka Suwa | 2016-07-05 |
| 9270419 | Wireless communication device and communication terminal | Yutaka Suwa, Hiroyuki Ishihara, Kyoichi Obana | 2016-02-23 |
| 9204465 | Wireless communication system and wireless communication device | Yutaka Suwa, Hiroyuki Ishihara, Konomi Suwa | 2015-12-01 |
| 8447241 | Wireless communication apparatus | Yutaka Suwa, Hiroyuki Ishihara, Toshihiko Sakata, Koji Hayashida, Norihiro Toyomura +1 more | 2013-05-21 |
| 6816543 | Spread spectrum communication apparatus and synchronization acquisition method therein | — | 2004-11-09 |
| 6700921 | Spread-spectrum communication apparatus | — | 2004-03-02 |