Inventor
OH KWANG SEI
KR14 patents
⚠️ This page may combine multiple inventors who share the name “OH KWANG SEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SK CHEMICALS CO LTD
13 patentsUS9963543B2May 8, 2018
Highly heat-resistant and highly transparent polycarbonate ester, and preparation method therefor
SK CHEMICALS CO LTD4 citations83
US11732089B2Aug 22, 2023
Highly heat-resistant and highly transparent polycarbonate ester, and preparation method therefor
SK CHEMICALS CO LTD2 citations72
US11535705B2Dec 27, 2022
Polycarbonate ester and preparation method therefor
SK CHEMICALS CO LTD2 citations72
US11479640B2Oct 25, 2022
Bio-based polycarbonate ester resin for eyeglass frame
SK CHEMICALS CO LTD4 citations72
US10738150B2Aug 11, 2020
Highly heat-resistant and highly transparent polycarbonate ester, and preparation method therefor
SK CHEMICALS CO LTD3 citations72
US10479860B2Nov 19, 2019
Method for preparing highly transparent and highly heat-resistant polycarbonate ester
SK CHEMICALS CO LTD4 citations72
US12162982B2Dec 10, 2024
Highly bio-based polycarbonate ester and method for producing same
SK CHEMICALS CO LTD2 citations71
US11590682B2Feb 28, 2023
Molded product manufactured from high heat resistant polycarbonate ester
SK CHEMICALS CO LTD2 citations71
US11421076B2Aug 23, 2022
Highly heat-resistant polycarbonate ester and preparation method therefor
SK CHEMICALS CO LTD4 citations71
US12473398B2Nov 18, 2025
Highly heat-resistant polycarbonate ester and preparation method therefor
SK CHEMICALS CO LTD0 citations61
US11939424B2Mar 26, 2024
Composition for liquid crystal polymer synthesis, liquid crystal polymer for electrical/electronic products, polymer resin composition, and molded product using the same
SK CHEMICALS CO LTD0 citations51
US9975991B2May 22, 2018
Highly heat-resistant and highly transparent polycarbonate ester, and preparation method therefor
SK CHEMICALS CO LTD0 citations51
US12391795B2Aug 19, 2025
Polymerizable composition, and copolycarbonate ester and method for producing same
SK CHEMICALS CO LTD0 citations50