Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11754113 | Rotary body | — | 2023-09-12 |
| 10302022 | Wire throttle adjustment device | Kazuhiro Umetani | 2019-05-28 |
| 10174782 | Structure for preventing falling of fastening nut of portable power working machine, and method for attaching fastening nut to cover | Kazuhiro Umetani | 2019-01-08 |
| 9925685 | Chainsaw | Kazuhiro Umetani | 2018-03-27 |
| 8746192 | Two-stroke internal combustion engine and its scavenging method | — | 2014-06-10 |
| 8225776 | Power unit for portable chain saw | Masato Nara | 2012-07-24 |
| 7857881 | Air cleaner for two-stroke internal combustion engine and method of tuning the length of air-fuel mixture passage by using the air cleaner | Shigeru Sato, Hidekazu Tsunoda, Kazuhiro Tsutsui | 2010-12-28 |
| 7322114 | Saw chain tensioning mechanism | — | 2008-01-29 |
| 7182059 | Oil pump mechanism for lubricating saw chain | Tatsumi Uejima | 2007-02-27 |