Inventor · disambiguated record
Akio Imai
Also filed as: IMAI AKIO
53 granted patents·9 pending applications·1,185 citations·filing 1976–2021
99Inventor score
Top patents by PatentIndex Score
62 records- 0194US5189109AModified diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1992·Granted Feb 23, 1993·94 cites·8 claims
- 0293US5985864APolymorphs of donepezil hydrochloride and process for productionEISAI CO LTD·Filed 1997·Granted Nov 16, 1999·118 cites·33 claims
- 0392US4981760AEthylene-alpha-olefin copolymer and films obtained therefromSUMITOMO CHEMICAL CO·Filed 1989·Granted Jan 1, 1991·84 cites·8 claims
- 0491US6245911B1Donepezil polycrystals and process for producing the sameEISAI CO LTD·Filed 1998·Granted Jun 12, 2001·82 cites·21 claims
- 0589US5128416AModified diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1990·Granted Jul 7, 1992·57 cites·6 claims
- 0689US4471093AElastomer composition comprising a blend of SBR rubbersSUMIMOTO RUBBER IND LTD·Filed 1983·Granted Sep 11, 1984·57 cites·6 claims
- 0787US7332606B2Process for producing 1-benzyl-4-[(5,6-dimethoxy-1-indanon)-2-yl]methylpiperidine or hydrochloride thereofEISAI R&D MAN CO LTD·Filed 2006·Granted Feb 19, 2008·5 cites·8 claims
- 0884US6329478B1Transition metal complex, process for producing the same, olefin polymerization catalyst containing the transition metal complex and process for producing olefin polymersSUMITMO CHEMICAL COMPANY LTD·Filed 1996·Granted Dec 11, 2001·86 cites·40 claims
- 0983US7828232B2Injection valve having nozzle holeDENSO CORP·Filed 2006·Granted Nov 9, 2010·15 cites·6 claims
- 1083US6140321APolymorphs of donepezil hydrochloride and process for productionEISAI CO LTD·Filed 1996·Granted Oct 31, 2000·75 cites·12 claims
- 1183US4957976AProcess for preparing diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1989·Granted Sep 18, 1990·30 cites·6 claims
- 1282US5219938AModified diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1992·Granted Jun 15, 1993·37 cites·6 claims
- 1381US11225619B2Aviation biofuel base material, aviation biofuel including same, and method for manufacturing aviation biofuelIDEMITSU KOSAN CO·Filed 2018·Granted Jan 18, 2022·2 cites·7 claims
- 1479US4118660AAutomatic machining systemNIPPON ELECTRIC CO·Filed 1977·Granted Oct 3, 1978·27 cites·2 claims
- 1577US5608018Aα-olefin polymerization catalyst system and process for producing α-olefin catalystSUMITOMO CHEMICAL CO·Filed 1994·Granted Mar 4, 1997·35 cites·23 claims
- 1677US5082908AEthylene-α-olefin copolymer and process for producing the sameSUMITOMO CHEMICAL CO·Filed 1989·Granted Jan 21, 1992·27 cites·5 claims
- 1776US7479563B2Method of producing polymorphic crystals of donepezil hydrochlorideEISAI R&D MAN CO LTD·Filed 2005·Granted Jan 20, 2009·3 cites·5 claims
- 1875US5015692AProcess for preparing modified diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1990·Granted May 14, 1991·22 cites·6 claims
- 1974US6333388B1Aluminum compound-containing solid catalyst component, catalyst for olefin polymerization and method for producing olefin polymerSUMITOMO CHEMICAL CO·Filed 2000·Granted Dec 25, 2001·10 cites·18 claims
- 2074US4482678ADiene rubber composition and tire using it in treadSUMITOMO RUBBER IND·Filed 1983·Granted Nov 13, 1984·25 cites·6 claims
- 2173US6187883B1Solid catalyst component for α-olefin polymerization, catalyst for α-olefin polymerization, and process for producing α-olefin polymerSUMITOMO CHEMICAL CO·Filed 1997·Granted Feb 13, 2001·46 cites·10 claims
- 2273US4639494AProcess for producing polystyreneSUMITOMO CHEMICAL CO·Filed 1985·Granted Jan 27, 1987·21 cites·13 claims
- 2371US4385151AComposition containing isoprene polymerSUMITOMO RUBBER IND·Filed 1981·Granted May 24, 1983·20 cites·1 claims
- 2470US4537936ADiene rubber composition, method of preparing the same and tire employing said compositionSUMITOMO CHEMICAL CO·Filed 1982·Granted Aug 27, 1985·19 cites·5 claims
- 2569US4737535ARubber composition for tire treadSUMITOMO RUBBER IND·Filed 1985·Granted Apr 12, 1988·20 cites·3 claims
- 2668US6838412B2α-Olefin polymerization catalyst and process for producing α-olefin polymerSUMITOMO CHEMICAL CO·Filed 2002·Granted Jan 4, 2005·7 cites·3 claims
- 2768US6066704ATransition metal complex, catalyst for olefin polymerization, and process for producing olefin polymersSUMITOMO CHEMICAL CO·Filed 1996·Granted May 23, 2000·13 cites·15 claims
- 2866US4523618ABranched polymer, process for the preparation thereof, tire tread rubber composition and tireSUMITOMO CHEMICAL CO·Filed 1983·Granted Jun 18, 1985·17 cites·8 claims
- 2964US12306145B2Inspection apparatusSHIMADZU CORP·Filed 2021·Granted May 20, 2025·0 cites·5 claims
- 3064US8127729B2Valve timing control apparatusTAKAHASHI HIROKI·Filed 2010·Granted Mar 6, 2012·1 cites·6 claims
- 3161US4087484AProcess for producing transparent block copolymer resinSUMITOMO CHEMICAL CO·Filed 1976·Granted May 2, 1978·15 cites·9 claims
- 3260US4436873AConjugated diene block polymer and process for preparing the sameSUMITOMO CHEMICAL CO·Filed 1983·Granted Mar 13, 1984·11 cites·4 claims
- 3356US6100213AAluminum compound-containing solid catalyst component, catalyst for olefin polymerization and method for producing olefin polymerSUMITOMO CHEMICAL CO·Filed 1997·Granted Aug 8, 2000·17 cites·16 claims
- 3456US5854164AMethod for preparing catalyst component for olefin polymerization, catalyst for olefin polymerization and process for producing olefin polymer with the catalystSUMITOMO CHEMICAL CO·Filed 1996·Granted Dec 29, 1998·14 cites·13 claims
- 3555US4885338AModified diene polymer rubbersSUMITOMO CHEMICAL CO·Filed 1988·Granted Dec 5, 1989·9 cites·13 claims
- 3653US6331501B1Catalyst for α-olefin polymerization and process for producing α-olefin polymerSUMITOMO CHEMICAL CO·Filed 1999·Granted Dec 18, 2001·10 cites·8 claims
- 3750US5428173AProcess for the preparation of aminothiadiazolylacetyl halide derivtivesEISAI KAGAKU KK·Filed 1993·Granted Jun 27, 1995·4 cites·11 claims
- 3849US4710554APolybutadiene and process for preparing the sameSUMITOMO CHEMICAL CO·Filed 1986·Granted Dec 1, 1987·7 cites·15 claims
- 3949US2023273169A1Inspection apparatusSHIMADZU CORP·Filed 2021·Application pending·0 cites
- 4049US2008234485A11-Benzyl-4-[ (5,6-Dimethoxy-1-Indanon) -2-Yl] Methylpiperidine Hydrobromide or Crystals ThereofASHIZAWA KAZUHIDE·Filed 2007·Application pending·0 cites
- 4148US10968408B2Gasoline composition and production process thereforSHOWA SHELL SEKIYU·Filed 2017·Granted Apr 6, 2021·0 cites·3 claims
- 4248US4743652AElastomeric copolymer of aromatic vinyl compounds and butadieneSUMITOMO CHEMICAL CO·Filed 1987·Granted May 10, 1988·6 cites·5 claims
- 4348US2008306272A1One-pot methods for preparing cinnamide derivativesEISAI R&D MAN CO LTD·Filed 2008·Application pending·0 cites
- 4446US2005059542A1Alpha-olefin polymerization catalyst and process for producing alpha-olefin polymerSUMITOMO CHEMICAL CO·Filed 2004·Application pending·0 cites
- 4545US7795438B2Processes for producing 1-benzyl-4-[(5,6-dimethoxy-1indanon)-2-yl]methylpiperidine and hydrochlorideEISAI R&D MAN CO LTD·Filed 2005·Granted Sep 14, 2010·0 cites·12 claims
- 4644US5037891AModified ethylene-α-olefin copolymer rubber and a process for producing the sameSUMITOMO CHEMICAL CO·Filed 1989·Granted Aug 6, 1991·5 cites·16 claims
- 4744US4918142ARubber composition of tire tread containing block copolymer coupled with dicarboxylic acid esterSUMITOMO CHEMICAL CO·Filed 1989·Granted Apr 17, 1990·8 cites·5 claims
- 4844US2009199801A1Valve timing adjusting apparatusDENSO CORP·Filed 2009·Application pending·0 cites
- 4944US2009171094A11-benzyl-4-[(5, 6-dimethoxy- 1- indanon)- 2- yl]-methyl piperidine p-toluenesulfonate or crystal thereofASHIZAWA KAZUHIDE·Filed 2006·Application pending·0 cites
- 5043US4647614ADiene elastomer compositionsSUMITOMO CHEMICAL CO·Filed 1985·Granted Mar 3, 1987·7 cites·5 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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