Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11419465 | Handheld vacuum cleaner | Alvin Au Yeuk Yuen, Mohammed Irfan, Somnanritha Chan, Yao Xiyin | 2022-08-23 |
| 11363921 | Handheld vacuum cleaner | Alvin Au Yeuk Yuen | 2022-06-21 |
| D521337 | Hammer drill | Daniel Alex Chunn, Frank Lenz | 2006-05-23 |
| D514507 | Battery charger | Daniel Alex Chunn | 2006-02-07 |
| D506436 | Battery charger | Daniel Alex Chunn | 2005-06-21 |
| D504394 | Battery pack | Daniel Alex Chunn | 2005-04-26 |
| D501385 | Drill | Daniel Alex Chunn, Frank Lenz | 2005-02-01 |
| D494034 | Speed drill | — | 2004-08-10 |
| D491438 | Hammer drill | Daniel Alex Chunn, Thomas K. Wong | 2004-06-15 |
| D488978 | Hammer drill | — | 2004-04-27 |
| D476542 | Pivot driver | Daniel Alex Chunn | 2003-07-01 |
| D472779 | Stick driver | Daniel Alex Chunn | 2003-04-08 |
| D472439 | Pivot driver | Daniel Alex Chunn | 2003-04-01 |
| D470737 | Electric screw gun | Daniel Alex Chunn | 2003-02-25 |
| D467146 | Stick driver | Daniel Alex Chunn | 2002-12-17 |
| D462249 | Keyless drill chuck | Daniel Alex Chunn, Meily Siu Mei Chan, Felix Leung | 2002-09-03 |
| D461696 | Keyless drill chuck | Daniel Alex Chunn, Meily Siu Mei Chan, Felix Leung | 2002-08-20 |