Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870744 | Tool exchange system for machining tools | Hisao Ishii, Yoshihisa Akiyama, Hiroshi Kamada, Takashi Nagatomi | 1989-10-03 |
| 4847744 | Voltage converter apparatus | — | 1989-07-11 |
| 4842359 | Optical star coupler and method of manufacturing the same | Katsuyuki Imoto, Minoru Maeda, Masayoshi Kameyama, Yasushi Ikuta, Shigeru Oho | 1989-06-27 |
| 4796993 | Phase modulation type fiber optic gyroscope | Hisao Sonobe, Junichi Makino, Shigeru Oho, Masahiro Matsumoto, Kouji Kitano | 1989-01-10 |