Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11772763 | Marine accelerating propeller | — | 2023-10-03 |
| 11319043 | Built-in propulsion system | — | 2022-05-03 |
| 10625835 | Marine propulsion system | — | 2020-04-21 |
| 9440722 | Marine propeller with adjustable exhaust means | — | 2016-09-13 |
| 8529305 | Electric outboard drive | — | 2013-09-10 |
| 8221079 | Propeller for boat | — | 2012-07-17 |
| 7544109 | Propelling system for boat | — | 2009-06-09 |
| 7488225 | Propeller for boat | — | 2009-02-10 |
| 6506019 | Boat propeller capable of being easily changed in pitch thereof | Chih-Chiang Tsai, Hui-Jeng Lin, Ya-Jung Lee | 2003-01-14 |
| 5975966 | Propelling system of small boat | — | 1999-11-02 |
| 5908284 | Marine propeller with tube shape shock absorbing means | — | 1999-06-01 |
| 5876257 | Stator of propelling system of small powerboat | — | 1999-03-02 |
| 5871381 | Stator of propelling system of small powerboat | — | 1999-02-16 |
| 5709834 | Device for removing gas and impurities from the molten aluminum | — | 1998-01-20 |
| 5116202 | Impeller | — | 1992-05-26 |