Inventor · disambiguated record
Kazuki Wakamatsu
Also filed as: WAKAMATSU KAZUKI
37 granted patents·607 citations·filing 1979–2006
98Inventor score
Top patents by PatentIndex Score
37 records- 0196US5132363AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1989·Granted Jul 21, 1992·80 cites·13 claims
- 0292US6337377B1Process for producing olefin polymers, olefin-polymerizing catalyst and polyproylene for biaxially oriented film produced with said catalystSUMITOMO CHEMICAL CO·Filed 2000·Granted Jan 8, 2002·38 cites·12 claims
- 0391US5115027APolypropylene stretched filmSUMITOMO CHEMICAL CO·Filed 1991·Granted May 19, 1992·44 cites·1 claims
- 0481US5268425AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1992·Granted Dec 7, 1993·32 cites·9 claims
- 0580US6777497B2Polypropylene-based resin composition, process for producing the same and injection molded articleSUMITOMO CHEMICAL CO·Filed 2002·Granted Aug 17, 2004·18 cites·14 claims
- 0680US6127303AProcess for producing olefin polymers, olefin-polymerizing catalyst and polypropylene for biaxially oriented film produced with said catalystSUMITOMO CHEMICAL CO·Filed 1997·Granted Oct 3, 2000·35 cites·10 claims
- 0777US6057413APropylene-ethylene random copolymer filmSUMITOMO CHEMICAL CO·Filed 1996·Granted May 2, 2000·35 cites·3 claims
- 0877US4820775AAlpha-olefin block copolymer particles and process for the production thereofSUMITOMO CHEMICAL CO·Filed 1986·Granted Apr 11, 1989·27 cites·8 claims
- 0976US5470900APowder molding process using a thermoplastic elastomer powderSUMITOMO CHEMICAL CO·Filed 1994·Granted Nov 28, 1995·27 cites·11 claims
- 1074US6110986APropylene-based polymer composition and foamed article thereofSUMITOMO CHEMICAL CO·Filed 1998·Granted Aug 29, 2000·28 cites·15 claims
- 1167US6835791B2Stretched polypropylene filmSUMITOMO CHEMICAL CO·Filed 2002·Granted Dec 28, 2004·6 cites·4 claims
- 1266US7465772B2Apparatus for continuous polymerization of olefin, method for transferring a polymer powder, and method for continuous polymerization of olefinSUMITOMO CHEMICAL CO·Filed 2005·Granted Dec 16, 2008·3 cites·7 claims
- 1366US6573332B2Propylene-based copolymer, process for producing the same and film comprising the sameSUMITOMO CHEMICAL CO·Filed 2001·Granted Jun 3, 2003·7 cites·9 claims
- 1464US5141994ACrystalline polypropylene and crystalline polypropylene compositionSUMITOMO CHEMICAL CO·Filed 1989·Granted Aug 25, 1992·19 cites·5 claims
- 1564US4337326AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1980·Granted Jun 29, 1982·13 cites·3 claims
- 1663US7282537B2Propylene-based polymer, polypropylene resin composition, and injection molded articleSUMITOMO CHEMICAL CO·Filed 2004·Granted Oct 16, 2007·5 cites·3 claims
- 1762US5449738AProcess for producing ethylene-propylene block copolymerSUMITOMO CHEMICAL CO·Filed 1992·Granted Sep 12, 1995·17 cites·7 claims
- 1859US5654372APolypropylene composition and the film thereofSUMITOMO CHEMICAL CO·Filed 1996·Granted Aug 5, 1997·18 cites·12 claims
- 1959US5473021AProcess for producing ethylene-propylene block copolymerSUMITOMO CHEMICAL CO·Filed 1994·Granted Dec 5, 1995·15 cites·20 claims
- 2056US5381827AGas distributor for use in gas phase polymerization apparatusSUMITOMO CHEMICAL CO·Filed 1993·Granted Jan 17, 1995·12 cites·6 claims
- 2156US5039748AHigh-strength polypropylene fiberSUMITOMO CHEMICAL CO·Filed 1990·Granted Aug 13, 1991·13 cites·4 claims
- 2254US5773129APolypropylene laminated filmSUMITOMO CHEMICAL CO·Filed 1994·Granted Jun 30, 1998·23 cites·28 claims
- 2353US6645901B2Prepolymerization catalyst for use in gas phase polymerization of olefins and process for producing the sameSUMITOMO CHEMICAL CO·Filed 2001·Granted Nov 11, 2003·14 cites·9 claims
- 2453US6184319B1Olefin polymer, films or sheets made therefrom, and process for the production of olefin polymerSUMITOMO CHEMICAL CO·Filed 1997·Granted Feb 6, 2001·14 cites·18 claims
- 2553US4254237AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1979·Granted Mar 3, 1981·7 cites·5 claims
- 2651US6117946APropylene block copolymerSUMITOMO CHEMICAL CO·Filed 1998·Granted Sep 12, 2000·10 cites·4 claims
- 2746US7858708B2Propylene-ethylene-butene block copolymer and molded article thereofSUMITOMO CHEMICAL CO·Filed 2006·Granted Dec 28, 2010·0 cites·5 claims
- 2845US6225414B1Propylene block copolymerSUMITOMO CHEMICAL CO·Filed 1997·Granted May 1, 2001·7 cites·15 claims
- 2942US6451936B1Polypropylene random copolymer and film thereofSUMITOMO CHEMICAL CO·Filed 1995·Granted Sep 17, 2002·6 cites·13 claims
- 3041US6613850B1Method for feeding boron compounds, fine particles of boron compounds, catalyst components for the polymerization of olefins comprising them, and processes for the production of the particlesSUMITOMO CHEMICAL COMOANY LTD·Filed 1997·Granted Sep 2, 2003·6 cites·23 claims
- 3141US6001293AProcess for producing polypropylene laminated filmSUMITOMO CHEMICAL CO·Filed 1998·Granted Dec 14, 1999·8 cites·7 claims
- 3239US4259461AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1979·Granted Mar 31, 1981·3 cites·11 claims
- 3337US6103841Aα-olefin polymers, α-olefin-polymerizing catalyst and process for producing α-olefin polymersSUMITOMO CHEMICAL CO·Filed 1997·Granted Aug 15, 2000·5 cites·23 claims
- 3435US4801650AProcess for producing 4-methylpentene-1 copolymer and resin composition containing the sameSUMITOMO CHEMICAL CO·Filed 1987·Granted Jan 31, 1989·2 cites·16 claims
- 3534US6710144B2Process for producing olefin polymerSUMITOMO CHEMICAL CO·Filed 2001·Granted Mar 23, 2004·0 cites·5 claims
- 3633US5486415APolypropylene laminate filmSUMITOMO CHEMICAL CO·Filed 1994·Granted Jan 23, 1996·8 cites·11 claims
- 3730US4883842AResin compositionSUMITOMO CHEMICAL CO·Filed 1988·Granted Nov 28, 1989·2 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Kazuki Wakamatsu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →