Issued Patents 2018
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10116352 | Communication system, transmission device, and reception device | Yoshiaki Koizumi, Takuya Mukai, Masahiro Ishihara | 2018-10-30 |
| 10117155 | Relay device and air conditioning system | Yoshiaki Koizumi, Naoyuki Hibara, Haruhiko Ishida | 2018-10-30 |
| 9995772 | Current measurement device and current calculation method | Yoshiaki Koizumi, Masahiro Ishihara | 2018-06-12 |
| 9973998 | Relay device and air conditioning system | Yoshiaki Koizumi, Naoyuki Hibara, Haruhiko Ishida | 2018-05-15 |
| 9935784 | Networked air-conditioning system, repeater and program | Yoshiaki Koizumi, Takuya Mukai | 2018-04-03 |