Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5132358 | Polymer emulsion | Naotaka Watanabe, Takeo Arai, Hitoshi Fujiyoshi | 1992-07-21 |
| 5069721 | Mortar concrete composition | Akira Tamura, Naotaka Watanabe, Hitoshi Fujiyoshi | 1991-12-03 |
| 5069754 | Papermaking method | Naotaka Watababe, Takao Arai, Hitoshi Fujiyoshi | 1991-12-03 |