Inventor · disambiguated record
Kenji Nagaoka
Also filed as: NAGAOKA KENJI
33 granted patents·648 citations·filing 1975–2022
98Inventor score
Top patents by PatentIndex Score
33 records- 0195US5304593ABlends of dispersing phase of polyphenylene ether, a crystalline thermoplastic matrix resin and a mutual compatiblizerSUMITOMO CHEMICAL CO·Filed 1992·Granted Apr 19, 1994·87 cites·13 claims
- 0295US5218048APolyolefin resin compositionSUMITOMO CHEMICAL CO·Filed 1990·Granted Jun 8, 1993·100 cites·17 claims
- 0395US5162433AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1989·Granted Nov 10, 1992·63 cites·8 claims
- 0492US5478878AThermoplastic compositionSUMITOMO CHEMICAL CO·Filed 1993·Granted Dec 26, 1995·53 cites·16 claims
- 0580US5288786AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1992·Granted Feb 22, 1994·34 cites·4 claims
- 0679US5424360AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1994·Granted Jun 13, 1995·35 cites·6 claims
- 0774US5296533AThermoplastic resin composition having improved resistance to discoloration from sunlightSUMITOMO CHEMICAL CO·Filed 1992·Granted Mar 22, 1994·28 cites·5 claims
- 0871US5189103APolyphenylene ether resin composition and process for producing the sameSUMITOMO CHEMICAL CO·Filed 1991·Granted Feb 23, 1993·17 cites·17 claims
- 0971US5084511AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1989·Granted Jan 28, 1992·21 cites·17 claims
- 1070US4639344AProcess for producing formed articles of aromatic polyamide-imide resinSUMITOMO CHEMICAL CO·Filed 1984·Granted Jan 27, 1987·29 cites·3 claims
- 1169US5403888AThermoplastic resin compositions of polyphenylene ether, polyphenylene sulfide and a mutual compatibilizerSUMITOMO CHEMICAL CO·Filed 1993·Granted Apr 4, 1995·17 cites·2 claims
- 1266US4061844ADyestuff acceptor for synthetic resinsSUMITOMO CHEMICAL CO·Filed 1975·Granted Dec 6, 1977·7 cites·17 claims
- 1363US12173767B2Coil spring jig, coil spring manufacturing method, and coil spring testing methodHITACHI ASTEMO LTD·Filed 2022·Granted Dec 24, 2024·0 cites·15 claims
- 1463US5554677ABlow-molded article made from thermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1995·Granted Sep 10, 1996·19 cites·5 claims
- 1562US5182336AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1990·Granted Jan 26, 1993·17 cites·14 claims
- 1658US12097591B2Method for determining propelling condition for shot medium, and method for manufacturing coil springHITACHI ASTEMO LTD·Filed 2022·Granted Sep 24, 2024·0 cites·18 claims
- 1755US5506305AThermoplastic resin compositions comprising polyphenylene ether, polyamide and block copolymersSUMITOMO CHEMICAL CO·Filed 1993·Granted Apr 9, 1996·13 cites·14 claims
- 1852US5475054AResin composition comprising polyphenylene ether, polyolefin resin and aliphatic polycarboxylic acidsSUMITOMO CHEMICAL CO·Filed 1994·Granted Dec 12, 1995·11 cites·1 claims
- 1950US5464891AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1994·Granted Nov 7, 1995·6 cites·17 claims
- 2048US5587427AResin composition and process for producing sameSUMITOMO CHEMICAL CO·Filed 1995·Granted Dec 24, 1996·8 cites·9 claims
- 2148US5523342AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1995·Granted Jun 4, 1996·10 cites·9 claims
- 2246US4895929AProcess for producing polyphenylene ether, dispersing polyether in aqueous medium and heating dispersionMITSUBISHI PETROCHEMICAL CO·Filed 1987·Granted Jan 23, 1990·10 cites·22 claims
- 2345US4721772AProcess for producing aromatic polyamide with polar solvent containing sulfolaneSUMITOMO CHEMICAL CO·Filed 1983·Granted Jan 26, 1988·6 cites·16 claims
- 2444US5635570AResin composition and process for producing the sameSUMITOMO CHEMICAL CO·Filed 1994·Granted Jun 3, 1997·7 cites·2 claims
- 2544US5561199AResin compositionSUMITOMO CHEMICAL CO·Filed 1995·Granted Oct 1, 1996·9 cites·8 claims
- 2644US5164435AStabilized thermoplastic ppo resin compositionSUMITOMO CHEMICAL CO·Filed 1991·Granted Nov 17, 1992·7 cites·10 claims
- 2744US5143981AResin compositionSUMITOMO CHEMICAL CO·Filed 1990·Granted Sep 1, 1992·7 cites·2 claims
- 2841US5585437AThermoplastic resin compositions comprising polyphenylene ether resins and thermoplastic resins which exhibit improved flow propertiesSUMITOMO CHEMICAL CO·Filed 1995·Granted Dec 17, 1996·7 cites·4 claims
- 2941US5561186AResin composition having improved recycling propertySUMITOMO CHEMICAL CO·Filed 1995·Granted Oct 1, 1996·7 cites·11 claims
- 3041US5336713AResin compositionSUMITOMO CHEMICAL CO·Filed 1993·Granted Aug 9, 1994·6 cites·9 claims
- 3138US4868276AProcess for producing polyphenylene oxide with alkanolamine and secondary amineSUMITOMO CHEMICAL CO·Filed 1987·Granted Sep 19, 1989·4 cites·13 claims
- 3232US5686539AThermoplastic compositionsSUMITOMO CHEMICAL CO·Filed 1991·Granted Nov 11, 1997·1 cites·4 claims
- 3332US5352737AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1993·Granted Oct 4, 1994·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →