Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9167803 | Device for farming benthic organisms such as bivalves | — | 2015-10-27 |
| 9027510 | Multi-level aquaculture device for benthic organisms such as bivalves, aquaculture method, and biofilter using same | — | 2015-05-12 |
| 8434458 | Timing transmission mechanism in engine | Masaru Asari, Naoto Hirayama, Aritoshi Imazato, Kentaro Yamada, Takeya Harada | 2013-05-07 |
| 8418669 | Internal combustion engine | Goichi Katayama, Yutaka Tajima, Shoichi Yamamoto | 2013-04-16 |
| 5636609 | Variable cylinder-operation controlled internal combustion engine | — | 1997-06-10 |
| 5460130 | SOHC-type valve operating system in internal combustion engine | Masami Fukuzawa, Koichi Fukuo, Hidemi Arai, Shinichi Nishida, Chihaya Sugimoto +3 more | 1995-10-24 |
| 5349929 | Valve controller for controlling the suction valve of an internal-combustion engine | Kiyoshi Shimizu | 1994-09-27 |
| 5282443 | Valve operating system in internal combustion engine | Yasuhiro Urata, Hiroshi Sono, Kouichi Fukuo | 1994-02-01 |
| 4919089 | Valve operating system for internal combustion engine | Hidenobu Nagase, Koichi Fukuo, Takatoshi Aoki | 1990-04-24 |
| 4917056 | Valve operation control system in internal combustion engine | Toru Yagi, Yoshiaki Hirosawa, Kaname Tokita | 1990-04-17 |
| 4889085 | Valve operating device for internal combustion engine | Toru Yagi, Takatoshi Aoki, Yasuhiro Urata | 1989-12-26 |
| 4873949 | Method of and apparatus for controlling valve operation in an internal combustion engine | Takatoshi Aoki, Yasuhiro Urata | 1989-10-17 |
| 4862843 | Valve timing control device for use in internal combustion engine | Michio Kawamoto, Takatoshi Aoki, Yasuhiro Urata | 1989-09-05 |