Inventor · disambiguated record
Matti Virta
Also filed as: VIRTA MATTI · VIRTA MATTI A
4 granted patents·87 citations·filing 1982–1984
76Inventor score
Top patents by PatentIndex Score
4 records- 0186US4553070AElectronic ballast for a discharge lampHELVAR OY·Filed 1982·Granted Nov 12, 1985·64 cites·6 claims
- 0246US4603378AInverter circuit with a control circuit for leading transistors more effectively into a turned-off stateHELVAR OY·Filed 1984·Granted Jul 29, 1986·11 cites·3 claims
- 0343US4492897AMeans for limiting and controlling the current of a discharge lampHAUENKALLIONTIE 6 A 4·Filed 1982·Granted Jan 8, 1985·11 cites·3 claims
- 0427US4424959ABrickwork constructionOUTOKUMPU OY·Filed 1982·Granted Jan 10, 1984·1 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →