Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12077285 | Free propeller assembly structure and aircraft structure having the same | — | 2024-09-03 |
| 8152395 | Pen with adjustable holding structure | — | 2012-04-10 |
| 7665921 | Offset pen structure for rapid assembling | — | 2010-02-23 |
| 7110581 | Wavelet-enhanced automated fingerprint identification system | Tao Xia, Jo Yew Tham, Lixin Shen, Seng Luan Lee | 2006-09-19 |
| 7001090 | Offset pen | Chang-Yun Yong | 2006-02-21 |
| 6901155 | Wavelet-enhanced automated fingerprint identification system | Tao Xia, Jo Yew Tham, Lixin Shen, Seng Luan Lee | 2005-05-31 |
| 6893178 | Offset pen structure | — | 2005-05-17 |
| D472269 | Pen holder shaft with killer whale motif | — | 2003-03-25 |
| D446815 | Grip portion for a writing instrument | — | 2001-08-21 |
| D446812 | Writing instrument | — | 2001-08-21 |
| 6250828 | Offset pen | — | 2001-06-26 |
| 6161976 | Automatic writing apparatus for segmental writing elements with caps | — | 2000-12-19 |
| 5479719 | Rolling ruler | — | 1996-01-02 |
| 5433012 | Rolling rule | — | 1995-07-18 |
| 5176346 | Suction cup device | — | 1993-01-05 |
| 5133524 | Suction cup device | — | 1992-07-28 |
| 5104077 | Suction cup | — | 1992-04-14 |
| 4805825 | Safety nail driving device | — | 1989-02-21 |
| 4766675 | Angle measuring instrument | — | 1988-08-30 |
| 4535542 | Vernier gauge | Bao-Horng Liu | 1985-08-20 |