Inventor · disambiguated record
Philip Y. Chang
Also filed as: CHANG PHILIP Y · CHANG PHILIP Y F
3 granted patents·625 citations·filing 1981–2010
77Inventor score
Top patents by PatentIndex Score
3 records- 0196US4417321AQualifying and sorting file record dataIBM·Filed 1981·Granted Nov 22, 1983·582 cites·9 claims
- 0271US7988153B2Westernized mahjong game composed of specialized playing cards or tilesCHANG PHILIP Y F·Filed 2010·Granted Aug 2, 2011·6 cites·14 claims
- 0369US4510567AQualifying and sorting file record dataIBM·Filed 1981·Granted Apr 9, 1985·37 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →