Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831378 | Semiconductor integrated circuit device and contactless electronic device | Kazuki Watanabe, Norihisa Yamamoto, Hajime Kinota, Keiji Kamei | 2004-12-14 |
| 6686750 | Semiconductor integrated circuit device and IC card | Kazuki Watanabe, Kenji Nagai, Tatsuya Nishihara | 2004-02-03 |
| 6608550 | Reader and/or writer apparatus, power feeding system, and communication system | Yoshihiko Hayashi, Takashi Suga, Kouichi Uesaka, Keisuke Igarashi | 2003-08-19 |
| 6487100 | Semiconductor integrated circuit device and contactless electronic device | Kazuki Watanabe, Norihisa Yamamoto, Hajime Kinota, Keiji Kamei | 2002-11-26 |
| 6427065 | Power transmission system, IC card and information communication system using IC card | Takashi Suga, Yoshihiko Hayashi, Kenji Nagai | 2002-07-30 |
| 6420883 | Semiconductor integrated circuit device and IC card | Kazuki Watanabe, Kenji Nagai, Tatsuya Nishihara | 2002-07-16 |
| 6321067 | Power transmission system IC card and information communication system using IC card | Takashi Suga, Yoshihiko Hayashi, Kenji Nagai | 2001-11-20 |
| 6194993 | Reader and/or writer apparatus, power feeding system, and communication system | Yoshihiko Hayashi, Takashi Suga, Kouichi Uesaka, Keisuke Igarashi | 2001-02-27 |
| 6173900 | IC card | Hiroshi Yoshigi, Takehiro Ookawa, Kimiaki Andou, Tadashi Oonishi, Koji Tsuru +4 more | 2001-01-16 |
| 5949823 | Data communication system and radio IC card system | Takashi Suga, Yoshihiko Hayashi, Kenji Nagai | 1999-09-07 |