Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8403356 | Clip structure and holding structure for interior member of vehicle | Tsuyoshi Tago, Michinori Kakumu, Motonori Kitayama | 2013-03-26 |
| 5782032 | Coal gasification furnace with a slag tap hole of specific shape | Shuntaro Koyama, Atsushi Morihara, Takanori Kudo, Sadao Takahashi, Masato Iwahara | 1998-07-21 |
| 5755838 | Coal gasifier and using method thereof | Shuntaro Koyama, Masato Takagi, Eiji Kida, Fumiki Ueda, Tadayoshi Muramatsu | 1998-05-26 |
| 5725615 | Entrained bed coal gasification reactor and method of gasifying coal | Atsushi Morihara, Takanori Kudo, Shuntaro Koyama, Eiji Kida | 1998-03-10 |
| 5432090 | Method for measuring metal ingredients in combustion gas | Shuntaro Koyama, Kenichi Sohma, Ryoichi Kaneko | 1995-07-11 |