Inventor · disambiguated record
Young-Kil Chang
Also filed as: CHANG YOUNG-KIL
29 granted patents·7 pending applications·185 citations·filing 1996–2021
96Inventor score
Top patents by PatentIndex Score
36 records- 0190US8859767B2Method for preparing 1-(4-(4-(3,4-dichloro-2-fluorophenylamino)-7-methoxyquinazolin-6-yloxy)piperidin-1-yl)-prop-2-en-1-one hydrochloride and intermediates used thereinHANMI SCIENCE CO LTD·Filed 2012·Granted Oct 14, 2014·8 cites·18 claims
- 0289US6716900B2Flameproof styrene containing graft resin compositions substantially free of phenolic resins and containing styrene/acrylonitrile resin compatabilizerCHEIL IND INC·Filed 2002·Granted Apr 6, 2004·37 cites·32 claims
- 0382US7157576B2Crystalline acid salts of cefdinir and process for preparing cefdinir using sameHANMI PHARM IND CO LTD·Filed 2002·Granted Jan 2, 2007·12 cites·9 claims
- 0482US6093814AProcess for preparation of cefdinirHANMI PHARMACEUTICAL CO LTD·Filed 1996·Granted Jul 25, 2000·38 cites·17 claims
- 0579US8097706B2Methods for preparing capecitabine and beta-anomer-rich trialkyl carbonate compound used thereinLEE JAEHEON·Filed 2008·Granted Jan 17, 2012·7 cites·7 claims
- 0677US6593404B1Thermoplastic resin compositionCHEIL IND INC·Filed 2000·Granted Jul 15, 2003·17 cites·16 claims
- 0776US6838497B2Flame retardant thermoplastic resin composition containing styrene polymer as compatabilizer and oxaphospholane compound as flame retardantCHEIL IND INC·Filed 2002·Granted Jan 4, 2005·14 cites·20 claims
- 0876US6646032B2Thermoplastic flameproof resin compositionCHEIL IND INC·Filed 2001·Granted Nov 11, 2003·12 cites·26 claims
- 0975US6639068B1Method of preparing highly pure cefpodoxime proxetilHANMI PHARM IND CO LTD·Filed 2000·Granted Oct 28, 2003·8 cites·6 claims
- 1073US8263769B2Process for preparing voriconazoleMOON YOUNG HO·Filed 2008·Granted Sep 11, 2012·2 cites·7 claims
- 1173US7202360B2Method for preparing risperidoneHANMI PHARM IND CO LTD·Filed 2003·Granted Apr 10, 2007·6 cites·6 claims
- 1268US8624026B2Method of preparing sitagliptin and intermediates used thereinKIM NAM DU·Filed 2010·Granted Jan 7, 2014·2 cites·6 claims
- 1368US8426599B2Method for preparation of Montelukast acid in ionic liquid mediumPARK CHUL-HYUN·Filed 2008·Granted Apr 23, 2013·1 cites·6 claims
- 1468US7038050B2Method for the preparation of highly pure 1-androstene derivativesHANMI PHARM IND CO LTD·Filed 2004·Granted May 2, 2006·3 cites·6 claims
- 1567US7799907B2Method for the preparation of 2′-deoxy-2′,2′-difluorocytidineHANMI PHARM IND CO LTD·Filed 2005·Granted Sep 21, 2010·1 cites·21 claims
- 1667US7112672B2Process for the selective preparation of 3-(z) propenyl-cephem compoundHANMI PHARM IND CO LTD·Filed 2002·Granted Sep 26, 2006·3 cites·15 claims
- 1767US7084274B2Method for the selective preparation of 3-oxo-4-aza-5α-androstane compoundHANMI PHARM IND CO LTD·Filed 2003·Granted Aug 1, 2006·3 cites·6 claims
- 1865US6900245B2Pharmaceutical composition comprising crystalline sibutramine methanesulfonate hemihydrateHANMI PHARM IND CO LTD·Filed 2003·Granted May 31, 2005·2 cites·29 claims
- 1965US6653374B1Method of preparing flameproof thermoplastic resin compositionCHEIL IND INC·Filed 2000·Granted Nov 25, 2003·7 cites·10 claims
- 2064US8217174B2Method of preparing montelukast and intermediates used thereinLEE GWAN SUN·Filed 2007·Granted Jul 10, 2012·1 cites·11 claims
- 2160US2022064145A1Synthesis of poziotinib derivativeHANMI SCIENCE CO LTD·Filed 2021·Application pending·0 cites
- 2259US6620930B1Process for preparing 7-amino-3-methoxymethyl-3-cephem-4-carboxylic acidHANMI PHARM IND CO LTD·Filed 2000·Granted Sep 16, 2003·1 cites·7 claims
- 2357US8569490B2Intermediate and process for preparing entecavir using sameLEE JAEHEON·Filed 2009·Granted Oct 29, 2013·0 cites·10 claims
- 2453US8637700B2Method for preparing (3S,4S)-4-((R)-2-(benzyloxy)tridecyl)-3-hexyl-2-oxetanone and novel intermediate used thereforYUN SANG MIN·Filed 2009·Granted Jan 28, 2014·0 cites·11 claims
- 2552US2010099896A1Method of preparing docetaxel and intermediates used thereinHANMI PHARM IND CO LTD·Filed 2007·Application pending·0 cites
- 2649US7858761B21-α-halo-2,2-difluoro-2-deoxy-D-ribofuranose derivatives and process for the preparation thereofHANMI PHARM IND CO LTD·Filed 2005·Granted Dec 28, 2010·0 cites·12 claims
- 2748US8242288B2Method of preparing (6R)-3-hexyl-4-hydroxy-6-undecyl-5, 6-dihydropyran-2-one, and intermediate used in the methodYUN SANG MIN·Filed 2008·Granted Aug 14, 2012·0 cites·10 claims
- 2848US2010317868A1Method of preparing taxane derivatives and intermediates used thereinHANMI PHARM IND CO LTD·Filed 2007·Application pending·0 cites
- 2945US2010099897A1Stable anhydrous crystalline docetaxel and method for the preparation thereofHANMI PHARM IND CO LTD·Filed 2008·Application pending·0 cites
- 3042US7638642B2Method for the preparation of D-erythro-2,2-difluoro-2-deoxy-1-oxoribose derivativeHANMI PHARM IND CO LTD·Filed 2005·Granted Dec 29, 2009·0 cites·8 claims
- 3141US2009326234A1(S)-(-)-Amlodipine Camsylate or Hydrate Thereof And Pharmaceutical Composition Comprising SameHANMI PHARM IND CO LTD·Filed 2007·Application pending·0 cites
- 3239US2002120136A1Method of preparing cephalosporins using 4-hydroxyphenylglycine derivativesFiled 2002·Application pending·0 cites
- 3338US2014163226A1Novel pyrimidine derivative and pharmaceutical composition including same as an active ingredientPARK CHUL HYUN·Filed 2012·Application pending·0 cites
- 3435US8853213B2Bicyclic compound for modulating G protein-coupled receptorsSON JUNG BEOM·Filed 2011·Granted Oct 7, 2014·0 cites·8 claims
- 3535US8569491B2Method for preparing entecavir and intermediate used thereinLEE JAE HEON·Filed 2010·Granted Oct 29, 2013·0 cites·24 claims
- 3633US6906123B2Flameproof styrene-containing graft resin compositions having a particular nitrile content distributionCHEIL IND INC·Filed 2002·Granted Jun 14, 2005·0 cites·33 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →