Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5761216 | Bit error measurement system | Takayuki Nakajima, Kazutaka Osawa, Kazuhiro Shimawaki, Kouichi Shiroyama | 1998-06-02 |
| 5623497 | Bit error rate measurement apparatus | Kazuhiro Shimawaki, Takayuki Nakajima | 1997-04-22 |
| 5210754 | Pattern synchronizing circuit | Toshiro Takahashi, Takayuki Nakajima, Noboru Akiyama | 1993-05-11 |
| 5150390 | High-rate pulse pattern generator | Mishio Hayashi | 1992-09-22 |