Inventor · disambiguated record
Katsumi Umehara
Also filed as: UMEHARA KATSUMI
2 granted patents·3 pending applications·7 citations·filing 2001–2012
52Inventor score
Top patents by PatentIndex Score
5 records- 0165US8388704B2Fuel additive composition and fuel composition containing the sameWATANABE HIROSHI·Filed 2003·Granted Mar 5, 2013·5 cites·22 claims
- 0252US7438731B2Fuel additive composition and fuel composition containing the sameCHEVRONTEXACO JAPAN LTD·Filed 2003·Granted Oct 21, 2008·2 cites·8 claims
- 0337US2014187453A1Ultra-low saps lubricants for internal combustion enginesUMEHARA KATSUMI·Filed 2012·Application pending·0 cites
- 0437US2014187455A1Ultra-low saps lubricants for internal combustion enginesUMEHARA KATSUMI·Filed 2012·Application pending·0 cites
- 0527US2002010103A1Lubricating oil composition having excellent thermal stability, extreme pressure resistance and anti-wear performanceFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →