Inventor · disambiguated record

Changzan Ma

Also filed as: MA CHANGZAN

1 granted patent·50 citations·filing 2006–2006

48Inventor score

Technology areasH02J

Files withDELTA ELECTRONICS INC1

Top patents by PatentIndex Score

1 record

0189US7619323B2Uninterruptible power supply capable of providing sinusoidal-wave output AC voltageDELTA ELECTRONICS INC·Filed 2006·Granted Nov 17, 2009·50 cites·10 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →