Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864568 | Communication control system | Yoshihisa Sato, Yuji Hirabayashi, Susumu Akiyama, Katsunori Ito | 1989-09-05 |
| 4837046 | Method for forming ferrite film | Masao Oishi, Katsukiyo Ishikawa, Masanori Abe, Yutaka Tamaura | 1989-06-06 |
| 4835671 | Communication control unit providing isolation of failure condition of electronic control unit | Yoshihisa Sato, Yugi Hirabayashi, Katsuhiro Ina, Katsunori Ito, Susumu Akiyama +1 more | 1989-05-30 |
| 4816364 | Magnetic carrier particles for electrophotographic developer having plated layer of iron oxide | Masao Oishi, Kouichi Nagata, Katsukiyo Ishikawa, Eio Hisajima | 1989-03-28 |