Inventor
UCHIKAWA NOBUTAKA
JP25 patents
⚠️ This page may combine multiple inventors who share the name “UCHIKAWA NOBUTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUI TOATSU CHEMICALS
23 patentsUS5548008AAug 20, 1996
Radiation-resistant polypropylene resin composition
MITSUI TOATSU CHEMICALS43 citations96
US5340848AAug 23, 1994
Radiation-resistant polypropylene resin composition
MITSUI TOATSU CHEMICALS35 citations92
US5278216AJan 11, 1994
Syndiotactic polypropylene resin composition
MITSUI TOATSU CHEMICALS37 citations92
US5232992AAug 3, 1993
Molded articles of syndiotactic polypropylene and method for preparing same
MITSUI TOATSU CHEMICALS22 citations92
US5187250AFeb 16, 1993
Poly-α-olefins
MITSUI TOATSU CHEMICALS48 citations91
US4632976ADec 30, 1986
Process for the continuous discharge of a slurry
MITSUI TOATSU CHEMICALS44 citations91
US5548007AAug 20, 1996
Radiation-resistant polypropylene resin composition
MITSUI TOATSU CHEMICALS18 citations82
US5478646ADec 26, 1995
Polypropylene fiber and a preparation process thereof
MITSUI TOATSU CHEMICALS17 citations81
US5212247AMay 18, 1993
Polypropylene resin compositions of high syndiotacticity and preparation process thereof
MITSUI TOATSU CHEMICALS19 citations81
US5624621AApr 29, 1997
Process of making polyprophylene fibers
MITSUI TOATSU CHEMICALS6 citations73
US5428127AJun 27, 1995
Preparation process of syndiotactic polyproplene
MITSUI TOATSU CHEMICALS9 citations73
US5314956AMay 24, 1994
Polypropylene resin compositions of high syndiotacticity and preparation process thereof
MITSUI TOATSU CHEMICALS11 citations73
US5175208ADec 29, 1992
Method for preparing block copolymers of propylene
MITSUI TOATSU CHEMICALS8 citations73
US5169924ADec 8, 1992
Copolymer of propylene and butene-1
MITSUI TOATSU CHEMICALS8 citations73
US4751265AJun 14, 1988
Production of propylene block copolymer
MITSUI TOATSU CHEMICALS11 citations73
US4468257AAug 28, 1984
Washing and removal method of high molecular substances
MITSUI TOATSU CHEMICALS11 citations73
US5266641ANov 30, 1993
Butene-1 copolymers and resin compositions containing the same
MITSUI TOATSU CHEMICALS14 citations72
US4725338AFeb 16, 1988
Purification process of polymerization solvent
MITSUI TOATSU CHEMICALS9 citations72
US5098967AMar 24, 1992
Method of controlling the molecular weight of polypropylene
MITSUI TOATSU CHEMICALS6 citations62
US5206324AApr 27, 1993
Butene-1 copolymer and resin composition containing the same
MITSUI TOATSU CHEMICALS2 citations61
US4772661ASep 20, 1988
Process for the production of block copolymer of propylene
MITSUI TOATSU CHEMICALS3 citations61
US5157092AOct 20, 1992
Polymer of 4-methylpentene-1
MITSUI TOATSU CHEMICALS5 citations60
US4409378AOct 11, 1983
Process for polymerization of α-olefins and catalysts therefor
MITSUI TOATSU CHEMICALS1 citations52