Inventor · disambiguated record
Calvin K. Ma
Also filed as: MA CALVIN · MA CALVIN K · MA CALVIN KA-CHUN
4 granted patents·1 pending application·63 citations·filing 1999–2016
73Inventor score
Top patents by PatentIndex Score
5 records- 0175US8718311B2Microphone stand mounting bracketsTC GROUP AS·Filed 2013·Granted May 6, 2014·4 cites·16 claims
- 0275US6344887B1Full spectrum reflective choleterics display employing circular polarizers with the same polarity but different dispositionFiled 1999·Granted Feb 5, 2002·56 cites·13 claims
- 0370US9179208B2Microphone stand mounting bracketsTC GROUP AS·Filed 2013·Granted Nov 3, 2015·3 cites·19 claims
- 0452US9288563B2Microphone stand mounting bracketsTC GROUP AS·Filed 2014·Granted Mar 15, 2016·0 cites·20 claims
- 0537US2018128421A1Microphone stand mounting clipMUSIC GROUP IP LTD·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →