Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12215617 | Exhaust gas purification apparatus and exhaust gas purification method | Takayuki Homma, Tadashi Takeuchi, Makoto Koike | 2025-02-04 |
| 6186113 | Direct cylinder injection-type spark ignition internal combustion engine | Fumiaki Hattori, Hiroyuki Hokuto, Toshimi Kashiwagura, Mutsumi Kanda, Makoto Koike | 2001-02-13 |
| 6035823 | Spark-ignition type engine | Makoto Koike | 2000-03-14 |