Inventor · disambiguated record
Hiroshi Nagakawa
Also filed as: NAGAKAWA HIROSHI
9 granted patents·159 citations·filing 1986–2006
89Inventor score
Top patents by PatentIndex Score
9 records- 0187US6878677B1Refrigerating machine oil compositionsIDEMITSU KOSAN CO·Filed 2000·Granted Apr 12, 2005·38 cites·18 claims
- 0284US6458288B1Lubricating oil for refrigerator with compressorIDEMITSU KOSAN CO·Filed 1990·Granted Oct 1, 2002·27 cites·6 claims
- 0379US7531488B2Lubricating oil for refrigerator with compressorIDEMITSU KOSAN CO·Filed 2001·Granted May 12, 2009·13 cites·6 claims
- 0478US7517839B2Lubricating oil for refrigerator with compressorIDEMITSU KOSAN CO·Filed 2002·Granted Apr 14, 2009·13 cites·3 claims
- 0578US6475405B1Lubricating oil for refrigerator with compressorIDEMITSU KOSAN CO·Filed 1991·Granted Nov 5, 2002·28 cites·4 claims
- 0673US6465400B1Lubricating oil composition for high-temperature useIDEMITSU KOSAN CO·Filed 1999·Granted Oct 15, 2002·24 cites·10 claims
- 0766US8394749B2Pressure medium oilAOYAMA SHOJI·Filed 2006·Granted Mar 12, 2013·1 cites·24 claims
- 0862US4800030ARefrigerator oil compositionIDEMITSU KOSAN CO·Filed 1986·Granted Jan 24, 1989·13 cites·10 claims
- 0931USRE39382ELubricating oil composition for high-temperature useIDEMITSU KOSAN CO·Filed 1999·Granted Nov 7, 2006·2 cites·21 claims
Join the waitlist — get patent alerts
Get an alert when Hiroshi Nagakawa 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 →