Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817371 | Multiple-fold automatic umbrella with smoothly wound multiple-fold rope | Jung-Jen Chang | 2004-11-16 |
| 6810890 | Obstruction-free golf bag umbrella | Jung-Jen Chang | 2004-11-02 |
| 6810895 | Umbrella having safety runner and strength-enhanced shaft tube | Jung-Jen Chang | 2004-11-02 |
| 6752509 | Illuminating umbrella grip detachably mounted with cassette LED illuminating unit | Jung-Jen Chang | 2004-06-22 |
| 6736151 | Anti-windforce rib assembly of multiple-fold umbrella | Jung-Jen Chang | 2004-05-18 |