Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8594020 | Wireless communication system, control apparatus, communication method switching method, and program | Masahiko Yahagi | 2013-11-26 |
| 8570891 | Wireless communication system, control apparatus, communication method switching method, and program | Masahiko Yahagi | 2013-10-29 |
| 8442018 | Wireless communication system, router apparatus, wireless communication method, and program | Masahiko Yahagi | 2013-05-14 |
| 5062494 | Hydraulic power steering apparatus for industrial vehicle | Shuji Ohta | 1991-11-05 |