Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9303527 | Hub cooling apparatus adapted to wind-power generator and method thereof | Yun-Yuan Chang | 2016-04-05 |
| 9109579 | Windmill and hub sealing apparatus thereof | Yun-Yuan Chang | 2015-08-18 |
| 8169102 | Vertical-axis windpower fan unit and module and power generating system thereof | Kuo-Tung TSENG, Yun-Yuan Chang | 2012-05-01 |
| 7982329 | Vertical axis wind generator structure | Chien-Chiang Tung, Yun-Yuan Chang | 2011-07-19 |
| 7843079 | Power generating device capable of outputting at constant rotation speed | Jui-Tang Tseng, Yun-Yuan Chang, Chien-Chiang Tung | 2010-11-30 |
| 7118028 | Method and machine for cutting window blind | Kuei-Lu Liu | 2006-10-10 |
| 7000516 | Multipurpose blind cutting machine | Kuei-Lu Liu | 2006-02-21 |
| 6990881 | Workpiece holding-down structure for blind cutting machine | — | 2006-01-31 |
| 6971296 | Venetian blind cutting machine | Kuei-Lu Liu | 2005-12-06 |
| 6761099 | Venetian blind cutting machine capable of clamping the slats automatically | Lei Chen | 2004-07-13 |
| 6325133 | Modulating mechanism of venetian blind | — | 2001-12-04 |
| 6308764 | Modulating mechanism of venetian blind | — | 2001-10-30 |