Inventor · disambiguated record
Hien Duc Ma
Also filed as: MA HIEN D · MA HIEN DUC
3 granted patents·196 citations·filing 1999–2006
72Inventor score
Top patents by PatentIndex Score
3 records- 0171US6563805B1Digital radio prepaid music recording systemXM SATELLITE RADIO INC·Filed 1999·Granted May 13, 2003·157 cites·25 claims
- 0268US6232926B1Dual coupled vehicle glass mount antenna systemXM SATELLITE RADIO INC·Filed 1999·Granted May 15, 2001·39 cites·27 claims
- 0348US8054968B2Method and apparatus for providing prepaid music card for deciphering recorded broadcast audio signalsSIRIUS XM RADIO INC·Filed 2006·Granted Nov 8, 2011·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →