Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9182496 | Access method for communication terminal | Masahiko Yahagi | 2015-11-10 |
| 8825075 | Timing of synchronizing signal | Masahiko Yahagi | 2014-09-02 |
| 6545590 | Musical alert radio pager | — | 2003-04-08 |
| 5933764 | Password-protected pager | — | 1999-08-03 |
| 5798708 | Message protection radio display paging using confidential code and password | — | 1998-08-25 |