Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5957191 | Casting method and apparatus using a resin core | Masamichi Okada, Norio Hayashi, Takayuki Ito | 1999-09-28 |
| 5850868 | Casting method with improved resin core removal step | Yuji Okada, Masamichi Okada, Tsutomu Ishikawa, Takumi Yamamoto, Norio Hayashi +1 more | 1998-12-22 |