Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8847751 | Line status detection apparatus, communication apparatus, and line status detection method | Fumio Ichihara, Akihiro Yamashita, Hidekazu Matsunobu, Nobutaka Kodama, Masahiro Maki +5 more | 2014-09-30 |
| 8139759 | Line state detecting apparatus and transmitting apparatus and receiving apparatus of balanced transmission system | Fumio Ichihara, Akihiro Yamashita, Tsunehiro Hanada, Toshiyuki Wakisaka, Masahiro Maki | 2012-03-20 |
| 8040235 | Relay apparatus and electric appliance | Hisao Koga, Yuji Igata, Ryota Yukizane, Fumio Ichihara | 2011-10-18 |
| 7949056 | Balanced transmitting apparatus | Akihiro Yamashita, Fumio Ichihara, Tsunehiro Hanada, Toshiyuki Wakisaka, Masahiro Maki | 2011-05-24 |
| 7924940 | Communication network system, and transmission/reception apparatus, method and integrated circuit for use therein | Akio Kurobe, Shigeo Yoshida, Tomohiro Kimura, Yuji Igata, Masahiro Maki +2 more | 2011-04-12 |
| 7912139 | Multi-carrier communication apparatus, power line communication circuit, and multi-carrier communication method | Nobutaka Kodama, Hisao Koga, Ryota Yukizane, Fumio Ichihara | 2011-03-22 |
| 7864658 | Multicarrier communication method and system, and communication apparatus incorporated therein | Toshiyuki Wakisaka, Masahiro Maki, Hisao Koga, Yuji Igata, Fumio Ichihara +2 more | 2011-01-04 |
| 7684502 | Communication network system, and transmission/reception apparatus, method and integrated circuit for use therein | Akio Kurobe, Shigeo Yoshida, Tomohiro Kimura, Yuji Igata, Masahiro Maki +2 more | 2010-03-23 |
| 7633964 | Communication apparatus, communication system and communication method | Tsunehiro Hanada, Fumio Ichihara, Akihiro Yamashita, Masahiro Maki, Toshiyuki Wakisaka | 2009-12-15 |
| 7391332 | Radiation information management device and communication device | Toshiyuki Wakisaka, Masahiro Maki, Tsunehiro Hanada, Fumio Ichihara, Akihiro Yamashita | 2008-06-24 |
| 6570941 | Receiver and phase extraction circuit | Isao Matsugaki | 2003-05-27 |