Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4428984 | Method of preventing dusts | Noboru Kiso, Taizo Igarashi | 1984-01-31 |
| 4203729 | Method for producing coal dispersing oil compositions | Takaharu Ishizaki, Taizo Igarashi | 1980-05-20 |
| 4187078 | Coal dispersing oil | Taizo Igarashi, Takaharu Ishizaki, Toshio Koma, Hideki Takahashi | 1980-02-05 |