Inventor · disambiguated record
Dragon Chang
Also filed as: CHANG DRAGON
3 granted patents·3 pending applications·31 citations·filing 2000–2007
69Inventor score
Top patents by PatentIndex Score
6 records- 0178US7588042B2Folding shaft for umbrellasGOLDEN RAIN ENTPR CO LTD·Filed 2007·Granted Sep 15, 2009·17 cites·5 claims
- 0264US7575009B2Mechanism for opening and collapsing umbrellaGOLDEN RAIN ENTPR CO LTD·Filed 2007·Granted Aug 18, 2009·4 cites·10 claims
- 0359US6329766B1Digital illumination adjusting circuitFiled 2000·Granted Dec 11, 2001·10 cites·9 claims
- 0451US2007277862A1Safety device for switch of umbrellaCHANG DRAGON·Filed 2007·Application pending·0 cites
- 0537US2004105279A1Light-emitting device with light softening coverFiled 2003·Application pending·0 cites
- 0631US2004036496A1Electronic load simulation circuit with serially connected impedance elementFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →