Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827505 | Subscriber line interface circuit | Kenji Takato, Toshiro Tojo, Yozo Iketani, Kiyoshi Shibuya | 1989-05-02 |
| 4748659 | Calling signal transmission apparatus | Kiyoshi Kasahara, Kenichi Ogawa, Kenji Takato, Shoji Nojiri, Yoshimi Iijima +3 more | 1988-05-31 |
| 4677669 | Battery feed circuit for a pair of subscriber lines | Shigeru Kawami, Takashi Tabu, Kiyoshi Shibuya, Shin Itoh | 1987-06-30 |
| 4631366 | Battery feed circuit for subscriber line | Kenji Takato, Kiyoshi Shibuya, Yoshimi Iijima, Atsuo Serikawa | 1986-12-23 |
| 4588860 | Battery feed circuit for telephone subscriber line | Kiyoshi Shibuya, Shin-ichi Itou, Kenji Takatou, Toshiro Tojo | 1986-05-13 |