Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5556436 | Solid fuel made from porous coal and production process and production apparatus therefore | Osamu Okuma, Takuo Shigehisa, Tetsuya Deguchi | 1996-09-17 |
| 5554201 | Thermal treated coal, and process and apparatus for preparing the same | Osamu Okuma, Takuo Shigehisa, Tetsuya Deguchi | 1996-09-10 |
| 4213946 | Process for preventing formation of gypsum scale in a flue gas desulfurization process | Isao Furuta, Toyohiko Masuda | 1980-07-22 |