Inventor · disambiguated record
Hiroyuki Nagamatsu
Also filed as: NAGAMATSU HIROYUKI
6 granted patents·1 pending application·45 citations·filing 1988–2007
78Inventor score
Top patents by PatentIndex Score
7 records- 0188US6551965B2Marine diesel engine lubricating oil composition having improved high temperature performanceCHEVRON ORONITE CO·Filed 2001·Granted Apr 22, 2003·35 cites·16 claims
- 0270US7960319B2Lubricating oil compositionCHEVRON JAPAN LTD·Filed 2007·Granted Jun 14, 2011·3 cites·15 claims
- 0370US7687444B2Lubricating oil composition having improved oxidation stability at high temperaturesCHEVRON JAPAN LTD·Filed 2005·Granted Mar 30, 2010·2 cites·8 claims
- 0465US7956021B2Diesel engine lubricating oil composition for large-bore two-stroke cross-head diesel enginesCHEVRON JAPAN LTD·Filed 2006·Granted Jun 7, 2011·1 cites·11 claims
- 0558US7875577B2Diesel engine lubricating oil composition for large-bore two-stroke cross-head diesel enginesCHEVRON JAPAN LTD·Filed 2006·Granted Jan 25, 2011·1 cites·17 claims
- 0638US2001019999A1Marine diesel engine lubricating oil composition having improved high temperature performanceFiled 2001·Application pending·0 cites
- 0725US4855073ALubricant compositions and methods for preparation of sameMURAKAMI MITSUHIRO·Filed 1988·Granted Aug 8, 1989·3 cites·19 claims
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