Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9722761 | Secondary cells in overlapping bands | Christian Bergljung, Tao Cui, Yoshio Honda, Klas Sjerling, Erika Tejedor | 2017-08-01 |
| RE36309 | Handoff method for cellular digital mobile communication system and mobile station | Yukitsuna Furuya | 1999-09-21 |
| 5898682 | Radio channel control apparatus used in a CDMA cellular system and capable of changing cell size | — | 1999-04-27 |
| 5722077 | Mobile communication system capable of effectively using a radio communication channel | — | 1998-02-24 |
| 5719583 | Mobile communication system which performs antenna gain control | — | 1998-02-17 |
| 5708441 | Antenna directivity control method and channel configuration method for a mobile communication system | — | 1998-01-13 |
| 5666654 | Method of channel allocation in a mobile telephone system | — | 1997-09-09 |
| 5566355 | Radio link control method for a mobile telecommunications system | — | 1996-10-15 |
| 5507008 | Channel assignment method in mobile communication system in which channel which meets predetermined criteria is channel selected | Kojiro Hamabe | 1996-04-09 |
| 5400391 | Mobile communication system | Katsumi Emura, Makoto Shibutani, Junji Namiki | 1995-03-21 |
| 5386589 | Transmission power control system capable of keeping signal quality constant in mobile communication network | — | 1995-01-31 |
| 5319795 | Cellular mobile communications system using frequencies commonly shared by neighboring cells for handoff operations | Kojiro Hamabe, Yukitsuna Furuya, Masanori Taketsugu | 1994-06-07 |
| 5307507 | Antenna arrangement system capable of reducing co-channel interference | — | 1994-04-26 |
| 5239667 | Method of controlling handoff in cellular mobile radio communications system | — | 1993-08-24 |
| 5157661 | Handoff method for cellular digital mobile communication system and mobile station | Yukitsuna Furuya | 1992-10-20 |