Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5838770 | Portable telephone system | Yutaka Fukushima, Shinichi Iwaki, Mitsuyoshi Hashida, Masao Wanami, Isao Shimbo +8 more | 1998-11-17 |
| 5675632 | Telephone exchange network using telephone exchanges with speech recognition | Toshiyuki Odaka, Akio Amano, Nobuo Hataoka, Toshiaki Suzuki, Ryujiro Muramatsu | 1997-10-07 |
| 5579370 | Portable telephone system | Yutaka Fukushima, Shinichi Iwaki, Mitsuyoshi Hashida, Masao Wanami, Isao Shimbo +8 more | 1996-11-26 |
| 5208811 | Interconnection system and method for heterogeneous networks | Jiro Kashio, Kenji Kawakita, Masao Kunimoto, Takeshi Harakawa | 1993-05-04 |
| 5157390 | Method for providing network service in a communication system | Tatsuo Yoshie, Yutaka Fukushima, Fumito Sato | 1992-10-20 |
| 4680752 | Time switch in a time division switching network | Shinobu Gohara | 1987-07-14 |
| 4477899 | Digital data transmission system with time division/packet transformation function | Takao Kato | 1984-10-16 |
| 4403322 | Voice signal converting device | Takao Kato, Akira Horiki, Noboru Watanabe | 1983-09-06 |