Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874153 | Process for producing ceramic products using the sludge obtained by sewage treatment | Mitsuru Iwata | 1989-10-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874153 | Process for producing ceramic products using the sludge obtained by sewage treatment | Mitsuru Iwata | 1989-10-17 |