Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7877857 | Manufacturing method of electric motor | Toshiyuki Osawa, Ryohei Kageyama, Nobuo Kasao | 2011-02-01 |
| 6369484 | Commutator of rotary electric machine and method of manufacturing the same | Ryohei Kageyama, Tsuyoshi Kuribayashi | 2002-04-09 |