Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5728025 | Differential apparatus | Yasuhiko Ishikawa, Sakuo Kurihara, Kazushige Nakane, Masao Teraoka | 1998-03-17 |
| 5083635 | Power transmission system for automotive vehicle | — | 1992-01-28 |
| 4983150 | Differential gear apparatus with differential limitation mechanism | Osamu Ishikawa | 1991-01-08 |