Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4366269 | Resin coated foundry sand using crystalline unsaturated polyester as binder | Koue Ohkawa, Shin-ichiro Fujii | 1982-12-28 |
| 4365047 | Resin composition for bonding foundry sand | Koue Ohkawa, Shin-ichiro Fujii | 1982-12-21 |