Inventor
KAKUGO MASAHIRO
JP30 patents
Patents
30 patentsUS4786562ANov 22, 1988
Polypropylene multi-layer film
SUMITOMO CHEMICAL CO30 citations92
US4769284ASep 6, 1988
Polypropylene multi-layer film
SUMITOMO CHEMICAL CO25 citations92
US4603174AJul 29, 1986
Stretched polypropylene film
SUMITOMO CHEMICAL CO37 citations92
US4551501ANov 5, 1985
Crystalline propylene polymer composition
SUMITOMO CHEMICAL CO42 citations92
US4820775AApr 11, 1989
Alpha-olefin block copolymer particles and process for the production thereof
SUMITOMO CHEMICAL CO27 citations91
US5043408AAug 27, 1991
Ethylene-aromatic vinyl compound alternating copolymer and process for the production thereof
SUMITOMO CHEMICAL CO35 citations90
US4367322AJan 4, 1983
Process for producing propylene copolymer
SUMITOMO CHEMICAL CO45 citations89
US5147942ASep 15, 1992
Thermoplastic resin composition
SUMITOMO CHEMICAL CO19 citations80
US4696979ASep 29, 1987
Process for producing propylene copolymer
SUMITOMO CHEMICAL CO19 citations79
US5141994AAug 25, 1992
Crystalline polypropylene and crystalline polypropylene composition
SUMITOMO CHEMICAL CO19 citations78
US5039748AAug 13, 1991
High-strength polypropylene fiber
SUMITOMO CHEMICAL CO13 citations74
US4748207AMay 31, 1988
Polypropylene sheet
SUMITOMO CHEMICAL CO10 citations74
US4337326AJun 29, 1982
Process for producing propylene-ethylene block copolymers
SUMITOMO CHEMICAL CO13 citations74
US4254237AMar 3, 1981
Process for producing propylene-ethylene block copolymers
SUMITOMO CHEMICAL CO7 citations74
US4195145AMar 25, 1980
Process for the purification of highly crystalline polyolefins
SUMITOMO CHEMICAL CO7 citations74
US4182852AJan 8, 1980
Process for refining a homopolymer of copolymer of propylene
SUMITOMO CHEMICAL CO11 citations74
US4839234AJun 13, 1989
Polypropylene film
SUMITOMO CHEMICAL CO5 citations73
US4355144AOct 19, 1982
Process for producing a propylene-ethylene copolymer having improved stretchability
SUMITOMO CHEMICAL CO12 citations73
US4283463AAug 11, 1981
Molded products of polypropylene
SUMITOMO CHEMICAL CO12 citations73
US5280000AJan 18, 1994
Catalyst for olefin polymerization and process for producing olefin polymer using the catalyst
SUMITOMO CHEMICAL CO12 citations72
US4584239AApr 22, 1986
Stretched multilayer polypropylene film
SUMITOMO CHEMICAL CO2 citations63
US4382065AMay 3, 1983
Fluidized bed apparatus and method of using
SUMITOMO CHEMICAL CO5 citations63
US4259461AMar 31, 1981
Process for producing propylene-ethylene block copolymers
SUMITOMO CHEMICAL CO3 citations63
US4663394AMay 5, 1987
Crystalline polybutene-1 compositions
SUMITOMO CHEMICAL CO2 citations62
US4414373ANov 8, 1983
Propylene-ethylene copolymer having improved stretchability
SUMITOMO CHEMICAL CO4 citations62
US5424379AJun 13, 1995
Process for selective production of cis-1,4-polybutadiene
SUMITOMO CHEMICAL CO2 citations61
US5349034ASep 20, 1994
Process for selective production of trans-1,4-polybutadiene
SUMITOMO CHEMICAL CO2 citations61
US4927872AMay 22, 1990
Polypropylene film
SUMITOMO CHEMICAL CO1 citations52
US4461881AJul 24, 1984
Process for the production of purified propylene homopolymers or copolymers
SUMITOMO CHEMICAL CO1 citations52
US4273905AJun 16, 1981
Process for producing propylene polymer or copolymer
SUMITOMO CHEMICAL CO0 citations40