Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887083 | Bipolar with eight-zeros substitution and bipolar with six-zeros substitution coding circuit | Toru Kosugi, Hirohisa Miyaou | 1989-12-12 |
| 4885746 | Frequency converter | Takeo Fukushima, Masami Mizuguchi, Yoshiaki Yato, Kenji Sato, Naonobu Fujimoto +1 more | 1989-12-05 |
| 4841524 | Digital data multiple conversion system for converting data having a frequency to data having another frequency by a digital stuffing method | Hirohisa Miyaou, Toru Kosugi | 1989-06-20 |