Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5840651 | Process for the production of activated coke for simultaneous desulfurization and denitrification | Masahiro Matsuoka, Hiroyasu Suenaga, Katsuhiko Umeno, Toshihisa Yuda | 1998-11-24 |
| 5525196 | Process for producing formed activated coke | Toshihisa Yuda, Masahiro Matsuoka, Fumiaki Furusawa, Mitsuhiro Takada | 1996-06-11 |
| 5308696 | Carbon fiber-reinforced cement material and method for preparing same | Koji Sakata, Shigeru Kanamaru, Toshiyuki Nawa, Kozo Toyama, Yoshikazu Takei +2 more | 1994-05-03 |
| 4802891 | Coal-methanol slurry and its production process | Izumi Yamada, Tetsuya Oishi | 1989-02-07 |