Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5230845 | Process for producing a ceramic product for use as a construction material | Minoru Iwase | 1993-07-27 |
| 5008053 | Process for producing a ceramic product using sludge ashes | Mitsuru Iwata, Junichi Sugihara, Minoru Iwase | 1991-04-16 |
| 4874153 | Process for producing ceramic products using the sludge obtained by sewage treatment | Mitsuru Iwata | 1989-10-17 |