Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4604143 | Demolition facilitating agent | Waichi Kobayashi, Satoshi Ohtaka | 1986-08-05 |
| 4452637 | Expansive cement additive and cementitious material added therewith | Waichi Kobayashi, Shigeo Okabayashi, Hidefumi Ichinose | 1984-06-05 |
| 4366257 | Process for producing a calcia clinker | Waichi Kobayashi, Satoshi Ohtaka | 1982-12-28 |