Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8377604 | Fuel cell stack structure with tie rod including inner shaft and outer cylinder fastened together with joining material and manufacturing method | Yasushi Nakajima, Hiroki Sakamoto, Yu Owada, Hiroshi Sakurai, Yoshiteru Yasuda | 2013-02-19 |
| 8304126 | Fuel cell | Yasushi Nakajima, Keiko Kushibiki, Shigeo Ibuka, Hirokazu Komatsu | 2012-11-06 |
| 8168346 | Fuel cell stack structure | Keiko Kushibiki, Yasushi Nakajima, Shigeo Ibuka, Hirokazu Komatsu | 2012-05-01 |
| 7556878 | Fuel cell with separator and porous support member including high density portion | Shigeo Ibuka, Keiko Kushibiki | 2009-07-07 |
| 6980584 | Reception apparatus | — | 2005-12-27 |
| 5818929 | Method and apparatus for DTMF detection | — | 1998-10-06 |
| 5818870 | Digital communication device | — | 1998-10-06 |
| 5638400 | Receiver | — | 1997-06-10 |
| 5623521 | Digital gain controller and gain control method | Koichi Tanaka | 1997-04-22 |
| 5432794 | Automatic Equalizer | — | 1995-07-11 |
| 5351134 | Image communication system, and image communication apparatus and modem used in the system | Takehiro Yoshida | 1994-09-27 |
| 5337332 | Training detection apparatus | Koichi Tanaka | 1994-08-09 |
| 5175746 | Receiving apparatus and transmitting-receiving apparatus | Yutaka Inoue, Yuko Ichikawa | 1992-12-29 |
| 5153527 | Demodulation apparatus having reception state evaluation | — | 1992-10-06 |
| 4679093 | Image communication apparatus | — | 1987-07-07 |
| 4631596 | Image communications apparatus for long-size copy image | — | 1986-12-23 |