Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426689 | Electromagnetic relay | Masafumi Nakagawa, Fumihiro Kamitani, Osamu Matsui, Kazuhiro Nobutoki, Toyotaka Nishikawa | 2002-07-30 |
| 4740771 | Armature biasing means in an electromagnetic relay | Atsushi Nakahata, Nobuo Kobayashi, Shigeyuki Okumura | 1988-04-26 |
| 4707675 | Electromagnetic relay | Toyotaka Nishikawa, Masashi Nakagawa | 1987-11-17 |
| 4570138 | Balanced armature type relay | Toyotaka Nishikawa | 1986-02-11 |
| 4374311 | Electrical multilayer contact | Keiji Okahashi, Satoru Furukawa | 1983-02-15 |