Inventor · disambiguated record
Chen-Maan Chang
Also filed as: CHANG CHEN MAAN
3 granted patents·2 pending applications·80 citations·filing 2000–2003
73Inventor score
Technology areasA45B
Top patents by PatentIndex Score
5 records- 0186US6311707B1UmbrellaFiled 2000·Granted Nov 6, 2001·55 cites·5 claims
- 0263US6422250B1Wire connection device for folding umbrellasFiled 2001·Granted Jul 23, 2002·13 cites·3 claims
- 0361US6341613B1Folding device for umbrellaFiled 2000·Granted Jan 29, 2002·12 cites·5 claims
- 0447US2005022459A1Automatic straight umbrellaFiled 2003·Application pending·0 cites
- 0544US2003140954A1Controlling apparatus of a automatic umbrellaFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →