Inventor · disambiguated record
Tadashi Katafuchi
Also filed as: KATAFUCHI TADASHI
17 granted patents·5 pending applications·213 citations·filing 1984–2012
94Inventor score
Top patents by PatentIndex Score
22 records- 0187US6159911ADiesel engine oil compositionIDEMITSU KOSAN CO·Filed 1998·Granted Dec 12, 2000·44 cites·24 claims
- 0285US8854058B2Measurement method of degradation/alteration degree of lubricant oil and measurement device thereofKATAFUCHI TADASHI·Filed 2010·Granted Oct 7, 2014·6 cites·12 claims
- 0380US5431835ALubricant refrigerant comprising composition containing fluorohydrocarbonIDEMITSU KOSAN CO·Filed 1994·Granted Jul 11, 1995·29 cites·22 claims
- 0475US6013609ARefrigerator oil and process for lubrication using the refrigerator oilIDEMITSU KOSAN CO·Filed 1996·Granted Jan 11, 2000·31 cites·4 claims
- 0572US9007073B2Measuring method for degree of degradation of lubricating oil, and measuring device therefor, as well as lubricating oil monitoring system in machine and deviceKATAFUCHI TADASHI·Filed 2010·Granted Apr 14, 2015·2 cites·12 claims
- 0669US5554311ALubricant for refrigerating machine employing refrigerant comprising hydrofluoroethaneIDEMITSU KOSAN CO·Filed 1995·Granted Sep 10, 1996·25 cites·15 claims
- 0767US8664966B2Device for evaluating degree of degradation of lubricating oilKATAFUCHI TADASHI·Filed 2009·Granted Mar 4, 2014·2 cites·9 claims
- 0867US6962614B2Additive for diesel particulate filterIDEMITSU KOSAN CO·Filed 2001·Granted Nov 8, 2005·7 cites·2 claims
- 0958US6376434B1Lube oil compositions for diesel enginesIDEMITSU KOSAN CO·Filed 1997·Granted Apr 23, 2002·17 cites·7 claims
- 1058US2009292137A1Additive for lubricating oil and fuel oil, lubricating oil composition, and fuel oil compositionIDEMITSU KOSAN CO·Filed 2009·Application pending·0 cites
- 1157US4832860ALubricating oil for metal workingIDEMITSU KOSAN CO·Filed 1988·Granted May 23, 1989·16 cites·36 claims
- 1257US2008045424A1Additive for Lubricating Oil and Fuel Oil, Lubricating Oil Composition, and Fuel Oil CompositionIDEMITSU KOSAN CO·Filed 2005·Application pending·0 cites
- 1355US8575080B2Lubricating oil composition for diesel engineKATAFUCHI TADASHI·Filed 2012·Granted Nov 5, 2013·0 cites·14 claims
- 1455US6140280ASuccinimide compound and method for producing it, lubricating oil additive comprising the compound and lubricating oil composition comprising the compound for diesel engineIDEMITSU KOSAN CO·Filed 1997·Granted Oct 31, 2000·17 cites·15 claims
- 1553US2007142238A1Lubricating oil composition for diesel engineIDEMITSU KOSAN CO·Filed 2005·Application pending·0 cites
- 1652US7989406B2Additive for diesel particulate filterIDEMITSU KOSAN CO·Filed 2004·Granted Aug 2, 2011·1 cites·15 claims
- 1748US8129319B2Lubricating compositionKATAFUCHI TADASHI·Filed 2006·Granted Mar 6, 2012·0 cites·15 claims
- 1845US4563097AMethod of evaluating cooling performance of heat treatment agent and apparatus thereforIDEMITSU KOSAN CO·Filed 1984·Granted Jan 7, 1986·9 cites·11 claims
- 1943US4828731ALubricating oil composition for working metalIDEMITSU KOSAN CO·Filed 1988·Granted May 9, 1989·4 cites·5 claims
- 2041US2005181957A1Lubricating oil additive composition for internal combustion engineFiled 2003·Application pending·0 cites
- 2137US2002103088A1Succinimide compound, process for producing the same, lubricating oil additive, and lubricating oil composition for internal combustion engineIDEMITSU KOSAN CO·Filed 2002·Application pending·0 cites
- 2233US5980829ANeutralization testing apparatusIDEMITSU KOSAN CO·Filed 1997·Granted Nov 9, 1999·3 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Tadashi Katafuchi 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 →