Inventor · disambiguated record
Katsunori Hagiwara
Also filed as: HAGIWARA KATSUNORI
4 granted patents·1 pending application·97 citations·filing 2006–2024
79Inventor score
Top patents by PatentIndex Score
5 records- 0196US7305954B2Plasma-jet spark plug and ignition systemNGK SPARK PLUG CO·Filed 2007·Granted Dec 11, 2007·31 cites·4 claims
- 0295US7328677B2Plasma-jet spark plug and ignition systemNGK SPARK PLUG CO·Filed 2007·Granted Feb 12, 2008·36 cites·5 claims
- 0390US7827954B2Plasma-jet spark plug control method and deviceNGK SPARK PLUG CO·Filed 2006·Granted Nov 9, 2010·14 cites·14 claims
- 0487US7714488B2Plasma jet spark plug and ignition system for the sameNGK SPARK PLUG CO·Filed 2006·Granted May 11, 2010·16 cites·21 claims
- 0551US2025210944A1Spark plugNITERRA CO LTD·Filed 2024·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →