Inventor · disambiguated record
Akinobu Shiga
Also filed as: FUKUI YOSHIHARU · KAKUGO MASAHIRO · SHIGA AKINOBU
43 granted patents·568 citations·filing 1973–1988
98Inventor score
Files withSUMITOMO CHEMICAL CO43
Top patents by PatentIndex Score
43 records- 0189US4551501ACrystalline propylene polymer compositionSUMITOMO CHEMICAL CO·Filed 1984·Granted Nov 5, 1985·42 cites·10 claims
- 0288US4672050ACatalyst and process for producing alpha-olefin polymers using the sameSUMITOMO CHEMICAL CO·Filed 1986·Granted Jun 9, 1987·44 cites·39 claims
- 0386US4806433AProcess for producing olefin polymerSUMITOMO CHEMICAL CO·Filed 1987·Granted Feb 21, 1989·48 cites·23 claims
- 0484US3960765ACatalyst for polymerization of olefins and process for preparing the sameSUMITOMO CHEMICAL CO·Filed 1974·Granted Jun 1, 1976·26 cites·9 claims
- 0582US4771023AProcess for producing olefin polymers and catalyst used thereinSUMITOMO CHEMICAL CO·Filed 1986·Granted Sep 13, 1988·29 cites·4 claims
- 0680US4367322AProcess for producing propylene copolymerSUMITOMO CHEMICAL CO·Filed 1981·Granted Jan 4, 1983·45 cites·11 claims
- 0777US4820775AAlpha-olefin block copolymer particles and process for the production thereofSUMITOMO CHEMICAL CO·Filed 1986·Granted Apr 11, 1989·27 cites·8 claims
- 0877US4761392ACatalyst system for polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1986·Granted Aug 2, 1988·34 cites·9 claims
- 0976US4743665AProcess for producing α-olefin polymersSUMITOMO CHEMICAL CO·Filed 1987·Granted May 10, 1988·22 cites·1 claims
- 1072US4283463AMolded products of polypropyleneSUMITOMO CHEMICAL CO·Filed 1979·Granted Aug 11, 1981·12 cites·21 claims
- 1171US4235984AProcess for producing highly stereoregular α-olefin polymersSUMITOMO CHEMICAL CO·Filed 1979·Granted Nov 25, 1980·13 cites·9 claims
- 1270US4123387ACatalysts for polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1977·Granted Oct 31, 1978·16 cites·22 claims
- 1367US4279776ACatalyst systemSUMITOMO CHEMICAL CO·Filed 1980·Granted Jul 21, 1981·14 cites·9 claims
- 1466US4696979AProcess for producing propylene copolymerSUMITOMO CHEMICAL CO·Filed 1984·Granted Sep 29, 1987·19 cites·8 claims
- 1564US4355144AProcess for producing a propylene-ethylene copolymer having improved stretchabilitySUMITOMO CHEMICAL CO·Filed 1981·Granted Oct 19, 1982·12 cites·3 claims
- 1664US4337326AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1980·Granted Jun 29, 1982·13 cites·3 claims
- 1763US4182852AProcess for refining a homopolymer of copolymer of propyleneSUMITOMO CHEMICAL CO·Filed 1978·Granted Jan 8, 1980·11 cites·4 claims
- 1861US4412049AProcess for producing highly stereoregular α-olefin polymersSUMITOMO CHEMICAL CO·Filed 1983·Granted Oct 25, 1983·12 cites·41 claims
- 1958US4364851AProcess for producing olefin polymersSUMITOMO CHEMICAL CO·Filed 1980·Granted Dec 21, 1982·12 cites·12 claims
- 2057US5280000ACatalyst for olefin polymerization and process for producing olefin polymer using the catalystSUMITOMO CHEMICAL CO·Filed 1986·Granted Jan 18, 1994·12 cites·19 claims
- 2157US4165298ACatalysts for the polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1977·Granted Aug 21, 1979·12 cites·34 claims
- 2255US4504637AOlefin polymerization catalysts and process for producing olefin polymers by using such catalystsSUMITOMO CHEMICAL CO·Filed 1983·Granted Mar 12, 1985·9 cites·18 claims
- 2353US4485035AProcess for producing highly stereoregular α-olefin polymersSUMITOMO CHEMICAL CO·Filed 1980·Granted Nov 27, 1984·9 cites·26 claims
- 2453US4254237AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1979·Granted Mar 3, 1981·7 cites·5 claims
- 2553US4195145AProcess for the purification of highly crystalline polyolefinsSUMITOMO CHEMICAL CO·Filed 1978·Granted Mar 25, 1980·7 cites·9 claims
- 2651US4053697AProcess for producing propylene homopolymers and copolymersSUMITOMO CHEMICAL CO·Filed 1975·Granted Oct 11, 1977·12 cites·5 claims
- 2749US4533706ACatalyst and process using same for producing olefin polymerSUMITOMO CHEMICAL CO·Filed 1983·Granted Aug 6, 1985·7 cites·18 claims
- 2845US4246135AOlefin polymerization catalystSUMITOMO CHEMICAL CO·Filed 1979·Granted Jan 20, 1981·4 cites·15 claims
- 2943US4414373APropylene-ethylene copolymer having improved stretchabilitySUMITOMO CHEMICAL CO·Filed 1982·Granted Nov 8, 1983·4 cites·3 claims
- 3042US4891411AProcess for producing olefin polymers and catalyst used thereinSUMITOMO CHEMICAL CO·Filed 1988·Granted Jan 2, 1990·4 cites·2 claims
- 3141US4183824ACatalysts for the polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1978·Granted Jan 15, 1980·4 cites·34 claims
- 3240US4382065AFluidized bed apparatus and method of usingSUMITOMO CHEMICAL CO·Filed 1981·Granted May 3, 1983·5 cites·6 claims
- 3339US4259461AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1979·Granted Mar 31, 1981·3 cites·11 claims
- 3439US3931135AProcess for reusing polymerization solvent by recyclingSUMITOMO CHEMICAL CO·Filed 1973·Granted Jan 6, 1976·4 cites·2 claims
- 3538US4645808AProcess for producing olefin polymerSUMITOMO CHEMICAL CO·Filed 1985·Granted Feb 24, 1987·3 cites·9 claims
- 3637US5026889ACatalyst system for olefin polymerization and method for production of olefin polymers by using the sameSUMITOMO CHEMICAL CO·Filed 1988·Granted Jun 25, 1991·3 cites·1 claims
- 3736US4554264AProcess for producing α-olefin polymers using novel catalyst systemSUMITOMO CHEMICAL CO·Filed 1984·Granted Nov 19, 1985·3 cites·8 claims
- 3835US4304892AOlefin polymerization catalystSUMITOMO CHEMICAL CO·Filed 1980·Granted Dec 8, 1981·2 cites·17 claims
- 3933US4243786ACatalysts for the polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1979·Granted Jan 6, 1981·1 cites·2 claims
- 4031US4461881AProcess for the production of purified propylene homopolymers or copolymersSUMITOMO CHEMICAL CO·Filed 1981·Granted Jul 24, 1984·1 cites·2 claims
- 4130US4217432AProcess for the polymerization of olefinsSUMITOMO CHEMICAL CO·Filed 1978·Granted Aug 12, 1980·1 cites·11 claims
- 4229US4514512AMethod for the production of solid titanium trichloride catalystSUMITOMO CHEMICAL CO·Filed 1983·Granted Apr 30, 1985·0 cites·10 claims
- 4329US4273905AProcess for producing propylene polymer or copolymerSUMITOMO CHEMICAL CO·Filed 1979·Granted Jun 16, 1981·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →