Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6999791 | Mobile communication terminal apparatus with data communication function | Akira Ishikura | 2006-02-14 |
| 6122515 | Mobile radio communication system and fixed and mobile units used therefor | Koichi Ito, Buntaro Sawa, Jun Kuno | 2000-09-19 |
| 6052565 | Mobile communication terminal apparatus with data communication function | Akira Ishikura | 2000-04-18 |
| 5590414 | Adapter unit for a portable radio telephone enabling either one of data transmission and hand-free operation | Goichi Sato | 1996-12-31 |
| 5471643 | Radio telecommunication apparatus | — | 1995-11-28 |
| 5444765 | Radio telephone apparatus having a service area confirmation | Shinya Takahashi, Kiyoshi Hattori | 1995-08-22 |
| 5444867 | Adapter unit for adaptively supplying a portable radio telephone with power | Goichi Sato, Takaaki Ishii, Shinji Takachi, Buntaro Sawa, Hiroshi Sato | 1995-08-22 |
| 5437053 | Radio telecommunication apparatus | Buntaro Sawa, Katsumi Shitara, Shinji Takachi | 1995-07-25 |
| 5367556 | Portable radio telephone used with an adaptor unit having a hand-free circuit | Goichi Sato, Buntaro Sawa, Hiroshi Sato | 1994-11-22 |
| 5239586 | Voice recognition system used in telephone apparatus | — | 1993-08-24 |
| 5134708 | Radio telephone apparatus | Kiyoshi Hattori | 1992-07-28 |
| 5101500 | Radio telecommunication apparatus | — | 1992-03-31 |
| 5033111 | Radio telecommunication apparatus | — | 1991-07-16 |
| 4998291 | Radio telephone apparatus | Kazuhiro Kawashima | 1991-03-05 |
| 4996715 | Radio telephone apparatus | Kiyoshi Hattori | 1991-02-26 |
| 4961212 | Voice recognition system used in telephone apparatus | Takaaki Ishii, Shinya Takahashi | 1990-10-02 |
| 4959850 | Radio telephone apparatus | — | 1990-09-25 |
| 4939768 | Car telephone equipment having automatic calling function | Tsutomu Inaba | 1990-07-03 |
| 4803717 | Automatic answering telephone with memory storage having storage indication and an alarm | — | 1989-02-07 |
| 4606050 | System for detecting and recovering a transmitted signal | Tatsuaki Sekigawa, Akio Gotoh, Syuitsu Tsutsumi, Naoto Honda | 1986-08-12 |
| 4600809 | Telephone systems | Kaoru Tatsumi, Takao Kishida, Takaaki Ishii | 1986-07-15 |
| 4558178 | Wireless telephone apparatus including both a telephone handset and a telephone headset | Hiroshi Yasuda | 1985-12-10 |
| 4509201 | Wireless telephone apparatus with protection against power loss | Tatsuaki Sekigawa, Akio Gotoh, Syuitsu Tsutsumi, Naoto Honda | 1985-04-02 |