Inventor

YOON SUNG CHEOL

KR54 patents

⚠️ This page may combine multiple inventors who share the name “YOON SUNG CHEOL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

YOON SUNG CHEOL

LG CHEMICAL LTD

Negative C-plate type optical anisotropic film comprising poly cycloolefin and method for preparing the same

Apparatus and method for recovering polymer

Nobonene-ester based addition polymer and method for preparing the same

Catalyst system for preparing cyclic olefin addition polymer, cyclic olefin addition polymer prepared by using the catalyst system and method for preparing the same

Method for polymerizing cycloolefin polymer containing polar functional groups and electronic devices employing the polymerized cycloolefins

Method for preparing norbornene based addition polymer containing ester or acetyl functional group

Method for polymerizing cycloolefin polymer containing polar functional groups and electronics devices employing the polymerized cycloolefins

Vertically aligned liquid crystal display using polynorbornene based polymer film

Method for polymerizing cycloolefin polymer containing polar functional groups and electronic devices employing the polymerized cycloolefins

Unified polarizing plate and method for preparing the same

Method for producing norbornene monomer composition, norbornene polymer prepared therefrom, optical film comprising the norbornene polymer, and method for producing the norbornene polymer

Method for polymerizing cyclic olefin having polar functional group, olefin polymer produced thereby, optical anisotropic film comprising the same, and catalyst composition for polymerizing the cyclic olefin

Catalyst system for polymerizing cyclic olefin having polar functional group, polymerizing method using the catalyst system, olefin polymer produced by the method and optical anisotropic film comprising the olefin polymer

Catalyst system for polymerizing cyclic olefin having polar functional group, polymerizing method using the catalyst system, olefin polymer produced by the method and optical anisotropic film comprising the olefin polymer

Elastic terpolymer including diene group and preparation method thereof

Elastic terpolymer and preparation method thereof

Elastic terpolymer including diene group and preparation method thereof

Elastic terpolymer and preparation method thereof

Polylactide resin having excellent heat resistance and preparation method thereof

Method of polymerizing cyclic olefins and vinyl olefins, copolymer produced by the method and optical anisotropic film comprising the same

Elastic diene terpolymer and preparation method thereof

Elastic diene terpolymer and preparation method thereof

Elastic diene terpolymer and preparation method thereof

Method for removing catalyst residues from polymer solution and polymers purified by the method

Packaging film including a lactide copolymer

Lactide copolymer, a preparation method thereof, and a resin composition including the same

Catalysts for polymerizing cyclic olefin

Method of preparing elastic terpolymer

Polylactide resin and preparation method thereof

Polysiloxane-polylactide block copolymer and preparation method thereof

UNIV NORTHWESTERN

Cyclopentadienyl-containing low-valent early transition metal olefin polymerization catalysts

Cyclopentadienyl-containing low-valent early transition metal olefin polymerization catalysts

Cyclopentadienyl-containing low-valent early transition metal olefin polymerization catalysts

Cyclopentadienyl-containing low-valent early transition metal olefin polymerization catalysts

Cyclopentadienyl-containing low-valent early transition metal olefin polymerization catalysts

SAMSUNG ATOFINA CO LTD

Supported catalyst for producing syndiotactic styrenic polymer

Syndiotactic polystyrene nanocomposite and manufacturing method thereof

Supported catalyst for producing syndiotactic styrenic polymer with high productivity and significantly reduced reactor fouling

Reactor alloy of syndiotactic polystyrene having high impact resistance

YOON SUNG-CHEOL

Polylactide resin having excellent heat resistance and preparation method thereof

Polylactide resin, method of preparing the same, and polylactide resin composition comprising the same

KOREA RES INST CHEMICAL TECH

Cathode buffer layer material and organic photoelectric device including same

Cathode buffer layer material and organic or organic/inorganic hybrid photoelectric device comprising same

SAMSUNG GENERAL CHEMICALS

Olefin polymerization chelate catalyst and olefin polymerization method using the same

SAMSUNG GENERAL CHEMICALS CO

Process for preparing syndiotactic styrenic polymers by recycling the products

HANWHA CHEMICAL CORP

Transition metal compound for olefin polymerization catalyst, olefin polymerization catalyst comprising same, and polyolefin polymerized using same

LEE JAEMIN

Organometallic compound, and organic light-emitting diode using same

CHUNG SUNG-HO

Catalyst system for preparing cyclic olefin addition polymer, cyclic olefin addition polymer prepared by using the catalyst system and method for preparing the same

YOON SUNG CHEOL

Preparation method of organic photovoltaic cell&#39;s photoactive layer using aerosol jet printing

PARK SEUNG-YOUNG

Method for preparing polymer by precipitation polymerization

Preparation method of organic photovoltaic cell's photoactive layer using aerosol jet printing