Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8687643 | Data transmission device | Hiroaki Miyata | 2014-04-01 |
| 7924882 | Packet forwarding apparatus suitable for forwarding extended frame | Hiroaki Miyata | 2011-04-12 |
| 7636360 | Dynamic VLAN ID assignment and packet transfer apparatus | Hiroaki Miyata, Migaku Ota | 2009-12-22 |
| 7532624 | Multicast packet control apparatus | Kozo Ikegami, Takashi Yokoyama, Yoshitaka Sakamoto, Shigehiro Onizawa | 2009-05-12 |
| 4488081 | Ignition plug | Ryoji Kondo, Kanji Higuchi, Kozo Takamura, Yasuyuki Sato | 1984-12-11 |
| 4267483 | Insulator on spark plug electrode coated with zirconium and vanadium oxides | Koichi Nakajima, Tomoji Ishiguro, Tokuhiko Okamoto, Minoru Konaka, Kanji Higuchi +1 more | 1981-05-12 |
| 4250426 | Spark plug having vanadium oxide islands on central insulator | Koichi Nakajima, Tomoji Ishiguro, Tokuhiko Okamoto, Minoru Konaka, Kanji Higuchi +1 more | 1981-02-10 |