P

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 patents
US5548008AAug 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 patents

Showing the top 50 of 67 patents by PatentIndex Score.