Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668845 | Multiple-fold automatic umbrella as ergonomically constructed and manipulated | Jung-Jen Chang | 2003-12-30 |
| 6626197 | Multiple-fold automatic umbrella with smoothly wound multiple-rope | Jung-Jen Chang | 2003-09-30 |
| 6626199 | Flattened and shortened umbrella | Jung-Jen Chang | 2003-09-30 |
| 6612320 | Economic double-story umbrella as conveniently anchored | Jung-Jen Chang | 2003-09-02 |
| 6571813 | Upwardly and downwardly actuated safety runner for foldable umbrella | Jung-Jen Chang | 2003-06-03 |