Inventor · disambiguated record
Hirotaka Yamasaki
Also filed as: YAMASAKI HIROTAKA
6 granted patents·2 pending applications·107 citations·filing 1989–2016
83Inventor score
Top patents by PatentIndex Score
8 records- 0189US6261474B1Lubricating oil for compression-type refrigerators containing pentafluoroethane and a polyvinyl etherIDEMITSU KOSAN CO·Filed 1997·Granted Jul 17, 2001·55 cites·12 claims
- 0281US8557751B2Lubricant compositionYAMASAKI HIROTAKA·Filed 2008·Granted Oct 15, 2013·7 cites·5 claims
- 0378US5326488AMannich reaction product and process for producing the same and use of the productIDEMITSU KOSAN CO·Filed 1993·Granted Jul 5, 1994·24 cites·12 claims
- 0473US6087539AProcess for producing an ether compoundIDEMITSU KOSAN CO·Filed 1996·Granted Jul 11, 2000·18 cites·16 claims
- 0542US2018051228A1Lubricating oil composition for four stroke engineIDEMITSU KOSAN CO·Filed 2016·Application pending·0 cites
- 0638US2018171259A1Lubricating oil composition for gas enginesIDEMITSU KOSAN CO·Filed 2015·Application pending·0 cites
- 0735US4959487AProcess for producing aromatic nitrileIDEMITSU KOSAN CO·Filed 1989·Granted Sep 25, 1990·1 cites·25 claims
- 0826US5239107AProcess for producing polycyanoaryl ether powderIDEMITSU KOSAN CO·Filed 1992·Granted Aug 24, 1993·2 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →