Inventor
ASANUMA TADASHI
JP67 patents
⚠️ This page may combine multiple inventors who share the name “ASANUMA TADASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUI TOATSU CHEMICALS
44 patentsUS5548008AAug 20, 1996
Radiation-resistant polypropylene resin composition
MITSUI TOATSU CHEMICALS43 citations96
US5200439AApr 6, 1993
Method for increasing intrinsic viscosity of syndiotactic polypropylene
MITSUI TOATSU CHEMICALS82 citations96
US5591817AJan 7, 1997
Molded articles of syndiotactic polypropylene and method for preparing same
MITSUI TOATSU CHEMICALS45 citations94
US5374685ADec 20, 1994
Syndiotactic propylene copolymer, method for preparing same, and its use
MITSUI TOATSU CHEMICALS30 citations93
US5373059ADec 13, 1994
Syndiotactic propylene copolymer, method for preparing same, and its use
MITSUI TOATSU CHEMICALS30 citations93
US5326824AJul 5, 1994
Syndiotactic propylene copolymer, method for preparing same, and its use
MITSUI TOATSU CHEMICALS23 citations93
US5354839AOct 11, 1994
Polyimide and preparation process of same
MITSUI TOATSU CHEMICALS23 citations92
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
US5200131AApr 6, 1993
Method for molding syndiotactic polypropylene
MITSUI TOATSU CHEMICALS24 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
US5166225ANov 24, 1992
Process for producing of crosslinked polyolefins
MITSUI TOATSU CHEMICALS20 citations82
US5132157AJul 21, 1992
Stretched films of polyproplene
MITSUI TOATSU CHEMICALS20 citations82
US5478646ADec 26, 1995
Polypropylene fiber and a preparation process thereof
MITSUI TOATSU CHEMICALS17 citations81
US5300620AApr 5, 1994
Heat-resistant adhesive and method of adhesion by using adhesive
MITSUI TOATSU CHEMICALS17 citations81
US5212247AMay 18, 1993
Polypropylene resin compositions of high syndiotacticity and preparation process thereof
MITSUI TOATSU CHEMICALS19 citations81
US4729772AMar 8, 1988
Separation method of polymer powder and carrier gas
MITSUI TOATSU CHEMICALS21 citations80
US5321096AJun 14, 1994
Polyimide composition
MITSUI TOATSU CHEMICALS13 citations74
US4581426AApr 8, 1986
Process for polymerization of α-olefins and catalysts therefor
MITSUI TOATSU CHEMICALS12 citations74
US4220745ASep 2, 1980
Process for polymerization of α-olefins
MITSUI TOATSU CHEMICALS14 citations74
US5624621AApr 29, 1997
Process of making polyprophylene fibers
MITSUI TOATSU CHEMICALS6 citations73
US5534595AJul 9, 1996
Syndiotactic propylene copolymer, preparation of the same, and resin composition containing the same
MITSUI TOATSU CHEMICALS17 citations73
US5480965AJan 2, 1996
Readily soluble, amorphous polyimide, and preparation process of same
MITSUI TOATSU CHEMICALS14 citations73
US5428127AJun 27, 1995
Preparation process of syndiotactic polyproplene
MITSUI TOATSU CHEMICALS9 citations73
US5376406ADec 27, 1994
Method for preparing decomposable film and its utilization
MITSUI TOATSU CHEMICALS16 citations73
US5334684AAug 2, 1994
α-olefin-alkenylsilane copolymer and method for preparing same
MITSUI TOATSU CHEMICALS8 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
US5081190AJan 14, 1992
Block copolymer of propylene and a process for the production thereof
MITSUI TOATSU CHEMICALS10 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
US5759469AJun 2, 1998
Method for preparing molded articles of syndiotactic polypropylene
MITSUI TOATSU CHEMICALS14 citations72
US5637367AJun 10, 1997
Transparent impact-resistant molded articles
MITSUI TOATSU CHEMICALS10 citations72
US5266641ANov 30, 1993
Butene-1 copolymers and resin compositions containing the same
MITSUI TOATSU CHEMICALS14 citations72
US5252700AOct 12, 1993
Heat-resistant adhesive and method of adhesion by using adhesive
MITSUI TOATSU CHEMICALS14 citations72
US4742131AMay 3, 1988
Method of controlling polymerization temperature
MITSUI TOATSU CHEMICALS14 citations72
US4725338AFeb 16, 1988
Purification process of polymerization solvent
MITSUI TOATSU CHEMICALS9 citations72
US5219968AJun 15, 1993
Propylene copolymer
MITSUI TOATSU CHEMICALS13 citations71
US5085895AFeb 4, 1992
Polyolefin resin composition
MITSUI TOATSU CHEMICALS9 citations70
US5045597ASep 3, 1991
α-olefin block copolymers and processes for preparing the same
MITSUI TOATSU CHEMICALS11 citations70
MITSUI CHEMICALS INC
6 patentsUS6197894B1Mar 6, 2001
Preparation of hydrogenated product of cyclic olefin ring-opening metathesis polymer
MITSUI CHEMICALS INC57 citations94
US5840389ANov 24, 1998
Transparent impact-resistant molded articles
MITSUI CHEMICALS INC54 citations94
US6255425B1Jul 3, 2001
Syndiotactic polypropylene copolymer and extruded polypropylene articles
MITSUI CHEMICALS INC22 citations92
US6121394ASep 19, 2000
Metallocene-catalyzed olefin polymerization in the absence of aluminoxane
MITSUI CHEMICALS INC53 citations92
US6063725AMay 16, 2000
Olefin polymerization catalyst system
MITSUI CHEMICALS INC19 citations92
US5888636AMar 30, 1999
Multi-layer blow molded article of polypropylene
MITSUI CHEMICALS INC31 citations91
Showing the top 50 of 67 patents by PatentIndex Score.