Issued Patents 2002
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6497242 | Multiple-fold umbrella rib assembly having inner ribs of aluminum alloy and outer ribs of carbon-fiber-reinforced plastics | Jung-Jen Chang | 2002-12-24 |
| 6418949 | Multiple-fold umbrella shaft having telescopic tubes outwardly decreased in concave quadrants | Jung-Jen Chang | 2002-07-16 |
| 6390107 | Double-story umbrella | Jung-Jen Chang | 2002-05-21 |
| 6390108 | Economic double-story umbrella | Jung-Jen Chang | 2002-05-21 |
| 6371141 | Safety umbrella runner ergonomically operated by sliding push button | Jung-Jen Chang | 2002-04-16 |
| 6360759 | Multiple-fold automatic umbrella with penta-fold rope | Jung-Jen Chang | 2002-03-26 |