Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11828242 | Internal combustion engine | Manabu Hashimoto, Takeshi Fukawa | 2023-11-28 |
| 10113509 | Carburetor for internal combustion engine | Koichi Sakurai, Masaki Ando, Eiichi Utsugi, Hitoshi Abe, Takashi Suzuki +1 more | 2018-10-30 |
| 7320314 | General-purpose engine fuel tank fuel vapor treatment system | Souji Kashima, Eiichi Utsugi, Shosaku Chiba | 2008-01-22 |
| 7104258 | General-purpose engine | Yoshikazu Yamada, Shosaku Chiba, Eiichi Utsugi | 2006-09-12 |
| 6871623 | Working machine having a single operation unit | Hisato Ohsawa, Fujio Kobayashi | 2005-03-29 |
| 6742623 | Muffler for internal combustion engine | Sizuo Yamamiya, Fujio Kobayashi | 2004-06-01 |
| 6647946 | Working machine having internal combustion engine | Hisato Ohsawa | 2003-11-18 |
| 6643939 | Chain saw with vibration-isolating devices | Hisato Ohsawa, Masato Nara | 2003-11-11 |
| 6378467 | Portable power working machine | Fujio Kobayashi, Hiroji Kawasaki, Hisato Ohsawa | 2002-04-30 |
| 6135071 | Two-stroke internal combustion engine | Fujio Kobayashi | 2000-10-24 |
| 5913291 | Two-cycle internal combustion engine | Fujio Kobayashi | 1999-06-22 |
| 5899179 | Two-cycle internal combustion engine | Katsunori Sasaki | 1999-05-04 |
| 5727506 | Two-stroke internal combustion engine | Hiroaki Koga, Hiroji Kawasaki | 1998-03-17 |