Assignee
SK CHEMICALS CO LTD
KR·139 granted patents·80 pending applications·423 citations·filing 1999–2025
Top patents by PatentIndex Score
219 records- 0195US11787901B2Polyester container and manufacturing method thereforSK CHEMICALS CO LTD·Filed 2022·Granted Oct 17, 2023·1 cites·7 claims
- 0295US11732089B2Highly heat-resistant and highly transparent polycarbonate ester, and preparation method thereforSK CHEMICALS CO LTD·Filed 2020·Granted Aug 22, 2023·2 cites·8 claims
- 0395US11713373B2Polyester resin, method for preparing same, and resin molded product formed therefromSK CHEMICALS CO LTD·Filed 2022·Granted Aug 1, 2023·1 cites·7 claims
- 0495US10738150B2Highly heat-resistant and highly transparent polycarbonate ester, and preparation method thereforSK CHEMICALS CO LTD·Filed 2018·Granted Aug 11, 2020·3 cites·2 claims
- 0595US6559272B1Method for preparing copolyester resins using titanium dioxide/silicon dioxide coprecipitate catalyst in the form of suspension in glycolSK CHEMICALS CO LTD·Filed 2002·Granted May 6, 2003·132 cites·7 claims
- 0694US11479640B2Bio-based polycarbonate ester resin for eyeglass frameSK CHEMICALS CO LTD·Filed 2019·Granted Oct 25, 2022·4 cites·16 claims
- 0794US11421076B2Highly heat-resistant polycarbonate ester and preparation method thereforSK CHEMICALS CO LTD·Filed 2018·Granted Aug 23, 2022·4 cites·13 claims
- 0894US11396579B2Polyester film and manufacturing method thereofSK CHEMICALS CO LTD·Filed 2018·Granted Jul 26, 2022·7 cites·27 claims
- 0993US10479860B2Method for preparing highly transparent and highly heat-resistant polycarbonate esterSK CHEMICALS CO LTD·Filed 2016·Granted Nov 19, 2019·4 cites·11 claims
- 1093US7772400B2Optical resolution method of amlodipineSK CHEMICALS CO LTD·Filed 2005·Granted Aug 10, 2010·13 cites·23 claims
- 1192US11447603B2Polyester resin, method for preparing same, and resin molded product formed therefromSK CHEMICALS CO LTD·Filed 2018·Granted Sep 20, 2022·3 cites·9 claims
- 1291US10875966B2Polyarylene sulfide and a preparation method thereofSK CHEMICALS CO LTD·Filed 2018·Granted Dec 29, 2020·1 cites·14 claims
- 1391US9963543B2Highly heat-resistant and highly transparent polycarbonate ester, and preparation method thereforSK CHEMICALS CO LTD·Filed 2014·Granted May 8, 2018·4 cites·4 claims
- 1490US12162982B2Highly bio-based polycarbonate ester and method for producing sameSK CHEMICALS CO LTD·Filed 2019·Granted Dec 10, 2024·2 cites·22 claims
- 1590US10822457B2Polyarylene sulfide resin and preparation method thereofSK CHEMICALS CO LTD·Filed 2016·Granted Nov 3, 2020·2 cites·9 claims
- 1690US7951967B2Method and apparatus for preparing fatty acid alkyl ester using fatty acidSK CHEMICALS CO LTD·Filed 2006·Granted May 31, 2011·20 cites·12 claims
- 1789US8957182B2Polyarylene sulfide resin with excellent luminosity and preparation method thereofSK CHEMICALS CO LTD·Filed 2014·Granted Feb 17, 2015·5 cites·2 claims
- 1888US11535705B2Polycarbonate ester and preparation method thereforSK CHEMICALS CO LTD·Filed 2019·Granted Dec 27, 2022·2 cites·4 claims
- 1988US10723852B2Heat shrinkable film composition comprising polyethyleneterephtalate resin and polyester based copolymer, and heat shrinkable filmSK CHEMICALS CO LTD·Filed 2018·Granted Jul 28, 2020·2 cites·1 claims
- 2087US12331175B2Polyester film and preparation method thereofSK CHEMICALS CO LTD·Filed 2024·Granted Jun 17, 2025·0 cites·6 claims
- 2187US11020947B2Thermo-shrinkable polyester filmSK CHEMICALS CO LTD·Filed 2015·Granted Jun 1, 2021·3 cites·6 claims
- 2287US9676903B2Polyester resin and method for preparing the sameSK CHEMICALS CO LTD·Filed 2016·Granted Jun 13, 2017·4 cites·2 claims
- 2386US12018118B2Polyester resin comprising regenerated bis(2-hydroxyethyl)terephthalate and filmSK CHEMICALS CO LTD·Filed 2023·Granted Jun 25, 2024·1 cites·14 claims
- 2486US11590682B2Molded product manufactured from high heat resistant polycarbonate esterSK CHEMICALS CO LTD·Filed 2018·Granted Feb 28, 2023·2 cites·11 claims
- 2586US11492444B2Polyester container and manufacturing method thereforSK CHEMICALS CO LTD·Filed 2018·Granted Nov 8, 2022·2 cites·9 claims
- 2686US10100193B2Polymer resin composition and molded article thereofSK CHEMICALS CO LTD·Filed 2014·Granted Oct 16, 2018·5 cites·17 claims
- 2786US9622986B2Percutaneous absorption preparation containing donepezil, and method for preparing sameSK CHEMICALS CO LTD·Filed 2013·Granted Apr 18, 2017·14 cites·13 claims
- 2886US8716298B2Composition for reducing skin wrinkles including PDE5 inhibitorSK CHEMICALS CO LTD·Filed 2012·Granted May 6, 2014·4 cites·3 claims
- 2985US10717811B2Polyester based copolymer resin and molded product comprising the sameSK CHEMICALS CO LTD·Filed 2014·Granted Jul 21, 2020·3 cites·4 claims
- 3085US9650515B2Polyarylene sulfide resin composition and a preparation method thereofSK CHEMICALS CO LTD·Filed 2013·Granted May 16, 2017·4 cites·21 claims
- 3184US12392057B2Polyester fiber, preparaion method thereof and molded article formed therefromSK CHEMICALS CO LTD·Filed 2023·Granted Aug 19, 2025·0 cites·6 claims
- 3284US10550223B2Polyester resin composition and preparation method thereofSK CHEMICALS CO LTD·Filed 2015·Granted Feb 4, 2020·2 cites·9 claims
- 3384US9636392B2Production method for capsular polysaccharide having pneumococcal serotypeSK CHEMICALS CO LTD·Filed 2013·Granted May 2, 2017·5 cites·13 claims
- 3484US7495022B2α,β-unsaturated hydroxamic acid derivatives and their use as histone deacetylase inhibitorsSK CHEMICALS CO LTD·Filed 2003·Granted Feb 24, 2009·14 cites·4 claims
- 3583US12473398B2Highly heat-resistant polycarbonate ester and preparation method thereforSK CHEMICALS CO LTD·Filed 2022·Granted Nov 18, 2025·0 cites·10 claims
- 3683US9155691B2Composition for reducing skin wrinkles including PDE5 inhibitorSK CHEMICALS CO LTD·Filed 2014·Granted Oct 13, 2015·3 cites·2 claims
- 3782US9981029B2Multivalent pneumococcal polysaccharide-protein conjugate compositionSK CHEMICALS CO LTD·Filed 2013·Granted May 29, 2018·7 cites·12 claims
- 3882US8993676B2Polylactic acid resin and copolymer polyester resin blend, and molded product using sameSK CHEMICALS CO LTD·Filed 2012·Granted Mar 31, 2015·3 cites·11 claims
- 3981US11993706B2Polyester film and preparation method thereforSK CHEMICALS CO LTD·Filed 2019·Granted May 28, 2024·1 cites·16 claims
- 4081US10478470B2Pharmaceutical composition containing leuprolide and having both immediate and sustained release propertiesSK CHEMICALS CO LTD·Filed 2017·Granted Nov 19, 2019·2 cites·6 claims
- 4181US9316244B2Fiber reinforced plastic bolt and method for producing the sameSK CHEMICALS CO LTD·Filed 2013·Granted Apr 19, 2016·3 cites·3 claims
- 4280US6924349B2Copolyester resin and articles using the sameSK CHEMICALS CO LTD·Filed 2004·Granted Aug 2, 2005·17 cites·9 claims
- 4379US12441675B2Method for preparing terephthalic acid, and terephthalic acid prepared therefromSK CHEMICALS CO LTD·Filed 2023·Granted Oct 14, 2025·0 cites·15 claims
- 4478US10696806B2Heat shrinkable film comprising polyester based copolymerSK CHEMICALS CO LTD·Filed 2014·Granted Jun 30, 2020·2 cites·4 claims
- 4578US7919127B2Pulsatilla spp. extracts effective in brain functionSK CHEMICALS CO LTD·Filed 2005·Granted Apr 5, 2011·2 cites·13 claims
- 4678US2026062534A1Method for producing bis(2hydroxyethyl)terephthalate by using recycled ethylene glycolSK CHEMICALS CO LTD·Filed 2025·Application pending·0 cites
- 4777US12351679B2Crystalline polyester resin and manufacturing method thereofSK CHEMICALS CO LTD·Filed 2024·Granted Jul 8, 2025·0 cites·20 claims
- 4877US11370915B2Polyarylene sulfide resin composition and formed articleSK CHEMICALS CO LTD·Filed 2019·Granted Jun 28, 2022·0 cites·19 claims
- 4977US2021079166A1Polyarylene sulfide and a preparation method thereofSK CHEMICALS CO LTD·Filed 2020·Application pending·0 cites
- 5076US9481684B2Gonadotropin releasing hormone receptor antagonists, method for the preparation thereof and pharmaceutical composition comprising the sameSK CHEMICALS CO LTD·Filed 2013·Granted Nov 1, 2016·4 cites·9 claims
Showing the top 50 of 219 patent records by PatentIndex Score.
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