Inventor · disambiguated record
Tomoyuki Kurumada
Also filed as: KURUMADA TOMOYUKI · OHTA NORIYUKI · OSAWA HISAYOU · SOMA NOBUO
36 granted patents·828 citations·filing 1973–1995
98Inventor score
Top patents by PatentIndex Score
36 records- 0197US4141883AStabilization of synthetic polymers by penta-or-hexa-substituted 4-piperidinol derivativesSANKYO CO·Filed 1977·Granted Feb 27, 1979·58 cites·16 claims
- 0295US4572912AThiazolidine derivatives, their preparation and compositions containing themSANKYO CO·Filed 1984·Granted Feb 25, 1986·284 cites·39 claims
- 0394US4191683ADerivatives of 4-aminopiperidine as stabilizers for polymersCIBA GEIGY CORP·Filed 1977·Granted Mar 4, 1980·51 cites·13 claims
- 0494US3941744APiperidine derivatives and their use as stabilizersSANKYO CO·Filed 1973·Granted Mar 2, 1976·37 cites·24 claims
- 0593US4241208APiperidine derivativesSANKYO CO·Filed 1978·Granted Dec 23, 1980·33 cites·30 claims
- 0690US4105626ADerivatives of 4-oxopiperidines and their use as polymer stabilizersCIBA GEIGY CORP·Filed 1976·Granted Aug 8, 1978·20 cites·24 claims
- 0789US4097587A1,3,8-Triazaspiro 4.5!decane-2,4-dione polymer stabilizersSANKYO CO·Filed 1976·Granted Jun 27, 1978·19 cites·14 claims
- 0889US3975462APiperidine-spiro-hydantoin derivatives and their use as stabilizersSANKYO CO·Filed 1974·Granted Aug 17, 1976·21 cites·16 claims
- 0989US3940363APiperidine derivatives and their use as stabilizersSANKYO CO·Filed 1973·Granted Feb 24, 1976·29 cites·12 claims
- 1085US4533688ATris(piperidylaminotriazylamino) compounds, their preparation and their use as polymer stabilizersSANKYO CO·Filed 1983·Granted Aug 6, 1985·31 cites·28 claims
- 1183US4075165AStabilization of polymers by penta- or hexa-substituted 4-piperidinol derivativesCIBA GEIGY CORP·Filed 1976·Granted Feb 21, 1978·26 cites·11 claims
- 1282US4237294A2,2,6,6-Tetramethylpiperidine derivativesSANKYO CO·Filed 1979·Granted Dec 2, 1980·10 cites·3 claims
- 1381US4066615APolymer compositions containing piperidine derivatives as stabilizersSANKYO CO·Filed 1975·Granted Jan 3, 1978·14 cites·15 claims
- 1479US4166813APolyalkylated 4-aminopiperidine derivativesSANKYO CO·Filed 1978·Granted Sep 4, 1979·10 cites·16 claims
- 1576US4321374ATriazine derivativesSANKYO CO·Filed 1980·Granted Mar 23, 1982·21 cites·6 claims
- 1675US4016168APiperidine derivativesSANKYO CO·Filed 1975·Granted Apr 5, 1977·16 cites·2 claims
- 1775US3963730AProcess for preparing triacetonamineSANKYO CO·Filed 1974·Granted Jun 15, 1976·8 cites·44 claims
- 1874US4212974APiperidine derivativesSANKYO CO·Filed 1978·Granted Jul 15, 1980·8 cites·10 claims
- 1973US4061616AStabilization of synthetic polymersSANKYO CO·Filed 1975·Granted Dec 6, 1977·7 cites·8 claims
- 2072US4118368ASynthetic polymer stabilizersSANKYO CO·Filed 1976·Granted Oct 3, 1978·7 cites·9 claims
- 2172US3984371AStabilization of synthetic polymersSANKYO CO·Filed 1973·Granted Oct 5, 1976·13 cites·9 claims
- 2270US4162246AHydantoin derivatives and their use as polymer stabilizersSANKYO CO·Filed 1977·Granted Jul 24, 1979·6 cites·11 claims
- 2369US4131599AStabilization of poly(mono-olefins)SANKYO CO·Filed 1976·Granted Dec 26, 1978·14 cites·12 claims
- 2469US4007158ANovel piperidine derivatives for the stabilization of synthetic polymersSANKYO CO·Filed 1974·Granted Feb 8, 1977·7 cites·6 claims
- 2568US4219465APiperidine-spiro-hydantoin derivatives and their use as polymer stabilizersSANKYO CO·Filed 1979·Granted Aug 26, 1980·5 cites·11 claims
- 2666US4055536A4,4'-Bipiperidylidene derivatives and their use as stabilizersSANKYO CO·Filed 1976·Granted Oct 25, 1977·5 cites·13 claims
- 2765US4371644APiperidine derivatives and their use as polymer stabilizersSANKYO CO·Filed 1980·Granted Feb 1, 1983·7 cites·4 claims
- 2864US3959298AProcess for preparing triacetonamineSANKYO CO·Filed 1974·Granted May 25, 1976·5 cites·46 claims
- 2960US5096948AResistant resin compositionsSANKYO CO·Filed 1990·Granted Mar 17, 1992·13 cites·39 claims
- 3055US4125533APiperidine derivativesSANKYO CO·Filed 1976·Granted Nov 14, 1978·8 cites·4 claims
- 3154US4265803APolymers containing polyalkylpiperidines and use thereof as stabilizersSANKYO CO·Filed 1978·Granted May 5, 1981·12 cites·27 claims
- 3253US3940401A4,4-(O-phenylenedioxy)-2,2,6,6-tetramethyl piperidineSANKYO CO·Filed 1974·Granted Feb 24, 1976·3 cites·1 claims
- 3352US4005094APiperidine-spiro-hydantoin derivativesSANKYO CO·Filed 1975·Granted Jan 25, 1977·8 cites·9 claims
- 3445US5739377APhenylalkanoic acid esters and their use as antioxidantsSANKYO CO·Filed 1995·Granted Apr 14, 1998·4 cites·40 claims
- 3544US3933735A4-Piperidone derivatives, their preparation and their use as stabilizersSANKYO CO·Filed 1974·Granted Jan 20, 1976·4 cites·7 claims
- 3636US4413076APolyalkylpiperdine side chain stabilizers for synthetic polymer compositionsSANKYO CO·Filed 1982·Granted Nov 1, 1983·4 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →