Inventor · disambiguated record
Koichi Tokunaga
Also filed as: TOKUNAGA KOICHI
12 granted patents·5 pending applications·59 citations·filing 1976–2023
86Inventor score
Top patents by PatentIndex Score
17 records- 0184US7068931B2Alarm control system and methodNEC CORP·Filed 2002·Granted Jun 27, 2006·35 cites·16 claims
- 0269US9487475B2Preparation method of aldehyde compound with limited amount of acrylonitrileMITSUI CHEMICALS INC·Filed 2013·Granted Nov 8, 2016·1 cites·5 claims
- 0366US10399930B2Purification method of aldehyde compoundMITSUI CHEMICALS INC·Filed 2017·Granted Sep 3, 2019·0 cites·5 claims
- 0466US4040525AMethod and apparatus for stacking ingots according to predetermined arrangementsMITSUI MINING & SMELTING CO·Filed 1976·Granted Aug 9, 1977·17 cites·8 claims
- 0566US2025002653A1Episulfide composition, polymerizable composition, cured product, and optical materialMITSUI CHEMICALS INC·Filed 2022·Application pending·0 cites
- 0663US2025019487A1Polythiol composition, polymerizable composition, resin, molded body, optical material, and lensMITSUI CHEMICALS INC·Filed 2023·Application pending·0 cites
- 0762US10399929B2Purification method of aldehyde compoundMITSUI CHEMICALS INC·Filed 2017·Granted Sep 3, 2019·0 cites·5 claims
- 0861US9809533B2Purification method of aldehyde compoundMITSUI CHEMICALS INC·Filed 2013·Granted Nov 7, 2017·0 cites·6 claims
- 0958US7627256B2Method and system for wavelength division multiplexed optical signal transmission and optical repeaterNEC CORP·Filed 2005·Granted Dec 1, 2009·2 cites·15 claims
- 1055US2009270583A1Process for Producing Pentaerythritol Mercaptocarboxylic Acid Ester, Pentaerythritol Mercaptocarboxylic Acid Ester Obtained by the Same, and Use ThereofMITSUI CHEMICALS INC·Filed 2005·Application pending·0 cites
- 1153US2011065887A1Process for producing pentaerythritol mercaptocarboxylic acid ester, pentaerythritol mercaptocarboxylic acid ester obtained by the same, and use thereofMITSUI CHEMICALS INC·Filed 2010·Application pending·0 cites
- 1249US2011245531A1Process for producing pentaerythritol mercaptocarboxylic acid ester, pentaerythritol mercaptocarboxylic acid ester obtained by the same, and use thereofMITSUI CHEMICALS INC·Filed 2011·Application pending·0 cites
- 1348US9475760B2Preparation method of aldehyde compound using a metal compound and a phosphorus compoundMITSUI CHEMICALS INC·Filed 2013·Granted Oct 25, 2016·0 cites·6 claims
- 1445US10844010B2Process for producing (poly)sulfide compound and process for producing episulfide compoundMITSUI CHEMICALS INC·Filed 2017·Granted Nov 24, 2020·0 cites·8 claims
- 1542US8772441B2Polyurethanes polymerizable composition and method for producing optical resin of the sameKUMA SHIGETOSHI·Filed 2005·Granted Jul 8, 2014·0 cites·6 claims
- 1640US8183404B2Process for producing dicyanonorbornane and zerovalent nickel complex catalystFUKATSU NORIHIKO·Filed 2007·Granted May 22, 2012·0 cites·4 claims
- 1725US4395175AProcess for treating scrap anodes and apparatus thereforMESCO INC·Filed 1980·Granted Jul 26, 1983·4 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →