Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5392339 | Telephone transfer apparatus using a special signal for transfer in facsimile communication | Tadashi Ishikawa, Takashi Sakayama, Michiaki Yoshihara, Takashi Nakajima | 1995-02-21 |
| 5289532 | Facsimile apparatus providing facsimile transmission with forwardable voice communication | Tadashi Ishikawa, Takashi Sakayama, Takashi Nakajima, Michiaki Yoshihara | 1994-02-22 |