Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8820292 | Spark-ignition internal combustion engine | Tsuyoshi Goto, Yasushi Nakahara, Masami Nishida | 2014-09-02 |
| 8677957 | Spark ignited internal combustion engine system | Tsuyoshi Goto, Masami Nishida | 2014-03-25 |
| 6240724 | Control device for direct injection engine | Hiroyuki Yamashita, Fumihiko Saito, Mikihito Fujii, Masakazu Matsumoto | 2001-06-05 |
| 6067954 | Direct fuel injection engine | Noriyuki Ota, Masashi Marubara, Hiroyuki Yamashita | 2000-05-30 |
| 5873344 | Direct fuel injection ignition engine | Hiroyuki Yamashita, Noriyuki Ota, Masashi Marubara, Akira Kageyama | 1999-02-23 |