Inventor
YOSHITSUGU KEN
JP25 patents
⚠️ This page may combine multiple inventors who share the name “YOSHITSUGU KEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUI PETROCHEMICAL IND
15 patentsUS5218071AJun 8, 1993
Ethylene random copolymers
MITSUI PETROCHEMICAL IND389 citations99
US5714426AFeb 3, 1998
Olefin polymerization catalyst
MITSUI PETROCHEMICAL IND38 citations96
US5525689AJun 11, 1996
Process for preparing ethylene copolymers
MITSUI PETROCHEMICAL IND51 citations96
US5464905ANov 7, 1995
Ethylene/α-olefin copolymer composition, graft modified ethylene/α-olefin copolymer composition, ethylene copolymer composition, and multi-stage olefin polymerization process
MITSUI PETROCHEMICAL IND67 citations96
US5455316AOct 3, 1995
Olefin polymerization solid catalyst, olefin polymerization catalyst and olefin polymerization
MITSUI PETROCHEMICAL IND49 citations96
US5374700ADec 20, 1994
Ethylene copolymer
MITSUI PETROCHEMICAL IND83 citations96
US5308816AMay 3, 1994
Olefin polymerization solid catalyst, olefin polymerization catalyst and olefin polymerization
MITSUI PETROCHEMICAL IND57 citations96
US5840815ANov 24, 1998
Gas-phase or slurry polymerization process for the preparation of an olefin polymer
MITSUI PETROCHEMICAL IND24 citations93
US5703180ADec 30, 1997
Catalyst for olefin polymerization, process for olefin polymerization using the same, ethylene/α-olefin copolymer, graft modified ethylene/α-olefin copolymer, and ethylene copolymer composition
MITSUI PETROCHEMICAL IND32 citations93
US5639842AJun 17, 1997
Ethylene random copolymers
MITSUI PETROCHEMICAL IND35 citations93
US5126301AJun 30, 1992
Solid catalyst for polymerizing an olefin
MITSUI PETROCHEMICAL IND55 citations93
US5795838AAug 18, 1998
Olefin polymerization catalyst and process for olefin polymerization
MITSUI PETROCHEMICAL IND20 citations92
US5708080AJan 13, 1998
Graft modified ethylene/α-olefin copolymer
MITSUI PETROCHEMICAL IND13 citations74
US5543377AAug 6, 1996
Olefin polymerization catalysts and methods of olefin polymerization
MITSUI PETROCHEMICAL IND14 citations74
US5539069AJul 23, 1996
Olefin polymerization catalysts and methods of olefin polymerization
MITSUI PETROCHEMICAL IND11 citations74
MITSUI CHEMICALS INC
6 patentsUS6329465B1Dec 11, 2001
Ethylene copolymer composition and uses thereof
MITSUI CHEMICALS INC160 citations98
US5883205AMar 16, 1999
Process for the preparation of an ethylene copolymer and prepolymerized solid catalyst for olefin polymerization
MITSUI CHEMICALS INC27 citations93
US6001941ADec 14, 1999
Ethylene α-olefin copolymer obtained by copolymerizing ethylene with an α-olefin
MITSUI CHEMICALS INC24 citations92
US5834557ANov 10, 1998
Graft modified ethylene/α-olefin copolymer composition
MITSUI CHEMICALS INC9 citations74
US6043325AMar 28, 2000
Process for olefin polymerization
MITSUI CHEMICALS INC7 citations73
US6303713B1Oct 16, 2001
Graft modified ethylene α-olefin copolymer obtained by graft copolymerzing an ethylene/α-olefin copolymer with a polar monomer
MITSUI CHEMICALS INC2 citations63