Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7349372 | Packet control apparatus to connect interconnected network and wireless apparatus | Keizo Sugiyama, Hideyuki Shinonaga | 2008-03-25 |
| 7283493 | System and method for switching between frequency channels in wireless LAN | Keizo Sugiyama, Hideyuki Shinonaga | 2007-10-16 |
| 7123941 | Radio LAN master station system | Tadayuki Fukuhara, Hiroyasu Ishikawa, Takayuki Warabino, Keizo Sugiyama, Hideyuki Shinonaga | 2006-10-17 |
| 6785248 | Spread spectrum communication method and spread spectrum communication apparatus | Hiroyasu Ishikawa, Hideyuki Shinonaga | 2004-08-31 |