Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11759908 | Handheld belt sander with improved structure | — | 2023-09-19 |
| 11628550 | Vibration reducing structure of pneumatic hammer | — | 2023-04-18 |
| 11602831 | Air impact tool having improved vibration-damping structure | — | 2023-03-14 |
| 11571797 | Pneumatic impact tool having vibration reducing structure | — | 2023-02-07 |
| 11059161 | Joint fixing structure of hand-held power tool | — | 2021-07-13 |
| 10618139 | Expandable handheld pneumatic belt grinder | — | 2020-04-14 |
| 10583548 | Silencing mechanism of pneumatic tool | — | 2020-03-10 |
| 10471582 | Handheld power tool | — | 2019-11-12 |
| 10189173 | Pneumatic tool | — | 2019-01-29 |
| 9718163 | Eraser wheel assembly structure | — | 2017-08-01 |
| 9381637 | Compressed air tool having silencer structure | — | 2016-07-05 |
| 8074736 | Pneumatic tool with an improved soundproof device | Chuan-ching Cheng | 2011-12-13 |
| 7878886 | Pneumatic grinder with an improved air intake control apparatus | Chuan-ching Cheng | 2011-02-01 |
| 7635293 | Grinding machine with a length-adjustable dust collecting structure | Chuan-ching Cheng | 2009-12-22 |
| D592480 | Bent head of a pneumatic tool | Chuan-ching Cheng | 2009-05-19 |
| 7530885 | Pneumatic grinder with improved handle structure | Chuan-ching Cheng | 2009-05-12 |
| 7465222 | Grinding wheel | Chuan-ching Cheng | 2008-12-16 |
| 7300337 | Grinding machine with a dust collector | Chuan-ching Cheng | 2007-11-27 |
| 7273412 | Abrasive wheel with improved composing structure | Chuan-ching Cheng | 2007-09-25 |
| 7238095 | Pneumatic grinder with improved muffling structure | Chuan-ching Cheng | 2007-07-03 |
| D544890 | Grinding wheel | Chuan-ching Cheng | 2007-06-19 |
| 7144315 | Grinding wheel | Chuan-ching Cheng | 2006-12-05 |
| 7118467 | Pneumatic buffing machine | Chuan-ching Cheng | 2006-10-10 |
| 6932165 | Controlling mechanism of pneumatic tool | Chuan-ching Cheng | 2005-08-23 |
| 6901665 | Pneumatic pruning hook with a telescopic shank | Chuan-ching Cheng | 2005-06-07 |