Inventor · disambiguated record
Masahiro Kakugo
Also filed as: KAKUGO MASAHIRO · SHIGA AKINOBU
30 granted patents·422 citations·filing 1978–1994
97Inventor score
Files withSUMITOMO CHEMICAL CO30
Top patents by PatentIndex Score
30 records- 0189US4551501ACrystalline propylene polymer compositionSUMITOMO CHEMICAL CO·Filed 1984·Granted Nov 5, 1985·42 cites·10 claims
- 0286US4603174AStretched polypropylene filmSUMITOMO CHEMICAL CO·Filed 1984·Granted Jul 29, 1986·37 cites·5 claims
- 0380US4367322AProcess for producing propylene copolymerSUMITOMO CHEMICAL CO·Filed 1981·Granted Jan 4, 1983·45 cites·11 claims
- 0479US5043408AEthylene-aromatic vinyl compound alternating copolymer and process for the production thereofSUMITOMO CHEMICAL CO·Filed 1990·Granted Aug 27, 1991·35 cites·15 claims
- 0577US4820775AAlpha-olefin block copolymer particles and process for the production thereofSUMITOMO CHEMICAL CO·Filed 1986·Granted Apr 11, 1989·27 cites·8 claims
- 0675US4786562APolypropylene multi-layer filmSUMITOMO CHEMICAL CO·Filed 1987·Granted Nov 22, 1988·30 cites·8 claims
- 0772US4283463AMolded products of polypropyleneSUMITOMO CHEMICAL CO·Filed 1979·Granted Aug 11, 1981·12 cites·21 claims
- 0866US4696979AProcess for producing propylene copolymerSUMITOMO CHEMICAL CO·Filed 1984·Granted Sep 29, 1987·19 cites·8 claims
- 0964US5147942AThermoplastic resin compositionSUMITOMO CHEMICAL CO·Filed 1990·Granted Sep 15, 1992·19 cites·4 claims
- 1064US5141994ACrystalline polypropylene and crystalline polypropylene compositionSUMITOMO CHEMICAL CO·Filed 1989·Granted Aug 25, 1992·19 cites·5 claims
- 1164US4355144AProcess for producing a propylene-ethylene copolymer having improved stretchabilitySUMITOMO CHEMICAL CO·Filed 1981·Granted Oct 19, 1982·12 cites·3 claims
- 1264US4337326AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1980·Granted Jun 29, 1982·13 cites·3 claims
- 1363US4182852AProcess for refining a homopolymer of copolymer of propyleneSUMITOMO CHEMICAL CO·Filed 1978·Granted Jan 8, 1980·11 cites·4 claims
- 1457US5280000ACatalyst for olefin polymerization and process for producing olefin polymer using the catalystSUMITOMO CHEMICAL CO·Filed 1986·Granted Jan 18, 1994·12 cites·19 claims
- 1556US5039748AHigh-strength polypropylene fiberSUMITOMO CHEMICAL CO·Filed 1990·Granted Aug 13, 1991·13 cites·4 claims
- 1655US4769284APolypropylene multi-layer filmSUMITOMO CHEMICAL CO·Filed 1986·Granted Sep 6, 1988·25 cites·11 claims
- 1753US4254237AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1979·Granted Mar 3, 1981·7 cites·5 claims
- 1853US4195145AProcess for the purification of highly crystalline polyolefinsSUMITOMO CHEMICAL CO·Filed 1978·Granted Mar 25, 1980·7 cites·9 claims
- 1951US4748207APolypropylene sheetSUMITOMO CHEMICAL CO·Filed 1985·Granted May 31, 1988·10 cites·4 claims
- 2043US4414373APropylene-ethylene copolymer having improved stretchabilitySUMITOMO CHEMICAL CO·Filed 1982·Granted Nov 8, 1983·4 cites·3 claims
- 2140US4382065AFluidized bed apparatus and method of usingSUMITOMO CHEMICAL CO·Filed 1981·Granted May 3, 1983·5 cites·6 claims
- 2239US4259461AProcess for producing propylene-ethylene block copolymersSUMITOMO CHEMICAL CO·Filed 1979·Granted Mar 31, 1981·3 cites·11 claims
- 2334US5424379AProcess for selective production of cis-1,4-polybutadieneSUMITOMO CHEMICAL CO·Filed 1994·Granted Jun 13, 1995·2 cites·2 claims
- 2433US5349034AProcess for selective production of trans-1,4-polybutadieneSUMITOMO CHEMICAL CO·Filed 1993·Granted Sep 20, 1994·2 cites·5 claims
- 2532US4839234APolypropylene filmSUMITOMO CHEMICAL CO·Filed 1987·Granted Jun 13, 1989·5 cites·5 claims
- 2632US4663394ACrystalline polybutene-1 compositionsSUMITOMO CHEMICAL CO·Filed 1985·Granted May 5, 1987·2 cites·9 claims
- 2731US4927872APolypropylene filmSUMITOMO CHEMICAL CO·Filed 1989·Granted May 22, 1990·1 cites·5 claims
- 2831US4461881AProcess for the production of purified propylene homopolymers or copolymersSUMITOMO CHEMICAL CO·Filed 1981·Granted Jul 24, 1984·1 cites·2 claims
- 2930US4584239AStretched multilayer polypropylene filmSUMITOMO CHEMICAL CO·Filed 1985·Granted Apr 22, 1986·2 cites·6 claims
- 3029US4273905AProcess 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 →