Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5130013 | Process for producing a liquefied coal oil and a catalyst for the process | Iwao Yamamoto, Takahisa Yamaura, Jun Imai | 1992-07-14 |
| 4818374 | Process for converting coal to an oil fraction | Nobuyoshi Hirokoh, Yukio Nakako, Tetsuo Matsumura | 1989-04-04 |
| 4750991 | Method for hydrogenating a solvent-refined coal | Hironori Kageyama, Jun Imai, Yukio Nakako | 1988-06-14 |
| 4740289 | Process for the hydrogenolysis of a coal liquid bottom | Tetsuo Masuyama | 1988-04-26 |
| 4737266 | Method for hydrogenating a solvent-refined coal | Hironori Kageyama, Jun Imai, Yukio Nakako | 1988-04-12 |
| 4541914 | Process for converting coal | Nobuyoshi Hirokoh, Yukio Nakako, Tetsuo Matsumura | 1985-09-17 |
| 4508841 | Process for producing porous refractory inorganic oxide products | Kazuhiko Onuma, Hiromu Kobayashi, Akihiro Matsuki, Makoto Suzuki | 1985-04-02 |
| 4448896 | Hydrogenation catalyst for desulfurization and removal of heavy metals | Kazuhiko Onuma, Toshihiro Kawakami, Makoto Suzuki | 1984-05-15 |
| 4341659 | Catalytic composition | Masakatsu Hatano, Toru Koyama, Takao Kaneko, Masayosi Murayama, Kazunori Oshima | 1982-07-27 |
| 4339329 | Liquefaction of coal | Masato Aiura, Kikuo Moriya | 1982-07-13 |