Inventor · disambiguated record
Kengo Otsuka
Also filed as: OTSUKA KENGO
12 granted patents·218 citations·filing 1986–2011
90Inventor score
Top patents by PatentIndex Score
12 records- 0195US5112817AQuinoline derivativesMITSUI TOATSU CHEMICALS·Filed 1989·Granted May 12, 1992·65 cites·12 claims
- 0293US5405843AQuinoline derivativesMITSUI TOATSU CHEMICALS·Filed 1993·Granted Apr 11, 1995·69 cites·17 claims
- 0385US5204348AHeterocyclic compounds and anticancer-drug potentiaters conaining them as effective componentsMITSUI TOATSU CHEMICALS·Filed 1991·Granted Apr 20, 1993·33 cites·9 claims
- 0481US5232923ACatechol derivatives and pharmaceutical preparations containing sameMITSUI TOATSU CHEMICALS·Filed 1991·Granted Aug 3, 1993·29 cites·9 claims
- 0571US8076478B2Polyamine derivative and polyol derivativeMITA NARUYOSHI·Filed 2006·Granted Dec 13, 2011·6 cites·8 claims
- 0658US4639521AIsoquinoline derivativesMITSUI TOATSU CHEMICALS·Filed 1986·Granted Jan 27, 1987·6 cites·5 claims
- 0757US8354529B2Polyamine derivative and polyol derivativeBASF SE·Filed 2011·Granted Jan 15, 2013·0 cites·7 claims
- 0849US5532349AProcess for producing 1-(2'-deoxy-β-D-erythro-pentofuranosyl)-5-trifluoromethyluracil derivativesMITSUI TOATSU CHEMICALS·Filed 1994·Granted Jul 2, 1996·6 cites·8 claims
- 0937US4782154AIsoquinoline derivativesMITSUI TOATSU CHEMICALS·Filed 1987·Granted Nov 1, 1988·1 cites·5 claims
- 1035US7026515B2Optically active amine derivatives and preparation process thereforMITSUI CHEMICALS INC·Filed 2001·Granted Apr 11, 2006·0 cites·17 claims
- 1134US5434155AQuinoline derivative fumaratesMITSUI TOATSU CHEMICALS·Filed 1993·Granted Jul 18, 1995·3 cites·5 claims
- 1232US5463061AProcess for production of glycide derivativeMITSUI TOATSU CHEMICALS·Filed 1993·Granted Oct 31, 1995·0 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →