Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230845 | Process for producing a ceramic product for use as a construction material | Ryusuke Hashimoto | 1993-07-27 |
| 5008053 | Process for producing a ceramic product using sludge ashes | Ryusuke Hashimoto, Mitsuru Iwata, Junichi Sugihara | 1991-04-16 |