Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4491700 | Hybrid circuit in a telephone subscriber interface circuit | Toshiyuki Tahara, Hironobu Uehara, Toshio Hayashi | 1985-01-01 |
| 4465967 | Current supply circuit | Michio Tokunaga, Junjiro Kitano, Akio Sagawa, Toshio Hayashi | 1984-08-14 |
| 4360709 | Loop detecting circuit | Junjiro Kitano, Tetsuo Takeshita | 1982-11-23 |
| 4254498 | Time division telephone switching systems | Kanzi Tawara, Tatsuro Takahashi, Tetsuaki Egawa | 1981-03-03 |