Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4385656 | Method of manufacturing foundry sand molds | Hideo Takahashi, Keishiro Igi, Hisashi Ogawara | 1983-05-31 |
| 4330459 | Method of manufacturing foundry sand molds | Hideo Takahashi, Keishiro Igi, Hisashi Ogawara | 1982-05-18 |