Inventor · disambiguated record
Risa Yamamoto
Also filed as: YAMAMOTO RISA
4 granted patents·1 pending application·7 citations·filing 2009–2012
63Inventor score
Top patents by PatentIndex Score
5 records- 0158US8322131B2Internal combustion engine exhaust gas cleaning apparatus and exhaust gas cleaning methodYAMAMOTO RISA·Filed 2009·Granted Dec 4, 2012·4 cites·12 claims
- 0256US8794673B2Hydraulic excavatorKOMATSU MFG CO LTD·Filed 2012·Granted Aug 5, 2014·3 cites·7 claims
- 0336US9028598B2Diesel engine exhaust purification systemYAMAMOTO RISA·Filed 2011·Granted May 12, 2015·0 cites·11 claims
- 0431US8999048B2Exhaust gas purifying apparatus for diesel engineNISHIZAWA TORU·Filed 2011·Granted Apr 7, 2015·0 cites·10 claims
- 0531US2012186235A1Exhaust gas purification device for internal combustion engineYAMAMOTO RISA·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →