Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5109178 | Spark plug for internal combustion engine | Mitsutaka Yoshida, Akihiro Toya, Eigo Goto, Makoto Sugimoto, Toru Moriya | 1992-04-28 |
| 4747547 | Process for the treatment of slag generated in an ironworks | — | 1988-05-31 |
| 4725307 | Method of treating dust and sludge simultaneously with steel slag | — | 1988-02-16 |
| 4711662 | Process for the simultaneous treatment of dust, sludge and steel slag | — | 1987-12-08 |