Inventor · disambiguated record
Hisakatsu Kawarai
Also filed as: KAWARAI HISAKATSU
8 granted patents·29 citations·filing 2005–2019
82Inventor score
Top patents by PatentIndex Score
8 records- 0188US7795558B2Electric discharge machine and electric discharge machining methodMITSUBISHI ELECTRIC CORP·Filed 2006·Granted Sep 14, 2010·9 cites·11 claims
- 0281US11747264B2Corrosion detection sensor, electrical apparatus including the same, and method of detecting corrosionMITSUBISHI ELECTRIC CORP·Filed 2019·Granted Sep 5, 2023·2 cites·9 claims
- 0375US7737380B2Electrical-discharge machining apparatus and method and apparatus for dielectric-fluid quality controlMITSUBISHI ELECTRIC CORP·Filed 2005·Granted Jun 15, 2010·4 cites·14 claims
- 0470US8241916B2Diagnostic method for oil-filled electrical apparatusTOYAMA SATORU·Filed 2008·Granted Aug 14, 2012·8 cites·5 claims
- 0568US8217296B2Fluid-quality control method, fluid-quality control apparatus, and electric-discharge machining apparatus employing the sameKAWARAI HISAKATSU·Filed 2006·Granted Jul 10, 2012·4 cites·23 claims
- 0659US9056361B2Liquid-quality adjusting apparatus, liquid-quality adjusting method, and wire electric discharge machining apparatusOHATA TAMAYO·Filed 2009·Granted Jun 16, 2015·2 cites·4 claims
- 0746US8058582B2Electrical discharge machining apparatus and electrical discharge machining methodKAWARAI HISAKATSU·Filed 2006·Granted Nov 15, 2011·0 cites·20 claims
- 0845US8753516B2Corrosion preventing apparatus, corrosion preventing method, and wire electric discharge machining apparatusKAWARAI HISAKATSU·Filed 2009·Granted Jun 17, 2014·0 cites·21 claims
Join the waitlist — get patent alerts
Get an alert when Hisakatsu Kawarai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →