Assignee
ZHEJIANG HUAHAI PHARM CO LTD
CN·41 granted patents·9 pending applications·7 citations·filing 2014–2023
Top patents by PatentIndex Score
50 records- 0188US11168063B2Preparation method for escitalopram pamoateZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Granted Nov 9, 2021·2 cites·6 claims
- 0277US11498897B2Method for preparing levetiracetamZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Granted Nov 15, 2022·2 cites·12 claims
- 0375US10618891B2Suvorexant intermediate and preparation method thereofZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Apr 14, 2020·1 cites·17 claims
- 0470US10189760B2Method for preparing sitagliptin intermediate via asymmetrical reduction methodZHEJIANG HUAHAI PHARM CO LTD·Filed 2015·Granted Jan 29, 2019·1 cites·17 claims
- 0568US10329290B2Preparation methods for palbociclib free base crystal form A and crystal form BZHEJIANG HUAHAI PHARM CO LTD·Filed 2016·Granted Jun 25, 2019·1 cites·8 claims
- 0664US11014885B2Method for preparing donepezil pamoateZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Granted May 25, 2021·0 cites·5 claims
- 0763US10766895B2Preparation methods for palbociclib free base crystal form A and crystal form BZHEJIANG HUAHAI PHARM CO LTD·Filed 2019·Granted Sep 8, 2020·0 cites·9 claims
- 0862US12084425B2Method for preparing escitalopram bis-hydroxynaphtoate crystal form aZHEJIANG HUAHAI PHARM CO LTD·Filed 2019·Granted Sep 10, 2024·0 cites·13 claims
- 0961US11919835B2Method for preparing pregabalinZHEJIANG HUAHAI PHARM CO LTD·Filed 2020·Granted Mar 5, 2024·0 cites·20 claims
- 1060US11420932B2Method for preparing pregabalin intermediate (R)-3-(carbamoylmethyl)-5-methylhexanoic acidZHEJIANG HUAHAI PHARM CO LTD·Filed 2020·Granted Aug 23, 2022·0 cites·13 claims
- 1159US12018018B2Pregabalin lactam methylene dimer and preparation method thereforZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Granted Jun 25, 2024·0 cites·15 claims
- 1259US2025320199A1Method for preparing glucopyranosyl-containing compoundZHEJIANG HUAHAI PHARM CO LTD·Filed 2023·Application pending·0 cites
- 1357US12492165B2Method for purifying key intermediates of citalopramZHEJIANG HUAHAI PHARM CO LTD·Filed 2021·Granted Dec 9, 2025·0 cites·19 claims
- 1456US2024335387A1Lyophilized Vortioxetine Pamoate Powder for Injection and Preparation Method ThereforZHEJIANG HUAHAI PHARM CO LTD·Filed 2021·Application pending·0 cites
- 1555US12304906B2Method for preparing lurasidone hydrochlorideZHEJIANG HUAHAI PHARM CO LTD·Filed 2020·Granted May 20, 2025·0 cites·12 claims
- 1655US11091508B2Fosaprepitant phosphate intermediate and preparation method thereforZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Aug 17, 2021·0 cites·11 claims
- 1755US2025066340A1Method for synthesizing rivaroxabanZHEJIANG HUAHAI PHARM CO LTD·Filed 2022·Application pending·0 cites
- 1853US11845710B2Method for continuously preparing citalopram diolZHEJIANG HUAHAI PHARM CO LTD·Filed 2019·Granted Dec 19, 2023·0 cites·20 claims
- 1952US9120782B2Method for preparation of iloperidone and crystallization method thereofZHEJIANG HUAHAI PHARM CO LTD·Filed 2014·Granted Sep 1, 2015·0 cites·7 claims
- 2052US2025051311A1Method for Preparing High-Purity LosartanZHEJIANG HUAHAI PHARM CO LTD·Filed 2022·Application pending·0 cites
- 2151US11420948B2Synthesis method for cariprazineZHEJIANG HUAHAI PHARM CO LTD·Filed 2019·Granted Aug 23, 2022·0 cites·17 claims
- 2251US2025115584A1High-Purity Losartan Potassium and Preparation Method ThereforZHEJIANG HUAHAI PHARM CO LTD·Filed 2022·Application pending·0 cites
- 2351US2024300911A1Purification method for citalopram or s-citalopramZHEJIANG HUAHAI PHARM CO LTD·Filed 2022·Application pending·0 cites
- 2450US12258330B2Method for preparing voriconazole and intermediate thereofZHEJIANG HUAHAI PHARM CO LTD·Filed 2020·Granted Mar 25, 2025·0 cites·15 claims
- 2550US10385079B2Preparation method for tedizolid, tedizolid intermediate, and preparation method thereforZHEJIANG HUAHAI PHARM CO LTD·Filed 2016·Granted Aug 20, 2019·0 cites·8 claims
- 2649US11519890B2Detection method for n-nitrosodimethylamine impuritiesZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Granted Dec 6, 2022·0 cites·19 claims
- 2748US10550109B2Crystal form of brexpiprazole and preparation method thereforZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Feb 4, 2020·0 cites·7 claims
- 2847US11365178B2Method for preparing elagolix intermediate and composition thereofZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Granted Jun 21, 2022·0 cites·16 claims
- 2947US10538507B2Preparation process for high-purity dabigatran etexilateZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Jan 21, 2020·0 cites·8 claims
- 3046US11008357B2Method for preparing canagliflozin amorphous formZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Granted May 18, 2021·0 cites·18 claims
- 3144US10173965B2Method for preparing pregabalin intermediate 3-carbamoymethyl-5-methylhexanoic acid without solventZHEJIANG HUAHAI PHARM CO LTD·Filed 2016·Granted Jan 8, 2019·0 cites·20 claims
- 3243US12116342B2Method for preparing brivaracetam and intermediate thereofZHEJIANG HUAHAI PHARM CO LTD·Filed 2019·Granted Oct 15, 2024·0 cites·18 claims
- 3343US10633329B2Method for preparing lisinopril intermediateZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Apr 28, 2020·0 cites·20 claims
- 3442US10456405B2Nitric oxide-releasing prodrug molecule of substituted quinazolinesZHEJIANG HUAHAI PHARM CO LTD·Filed 2016·Granted Oct 29, 2019·0 cites·9 claims
- 3541US10577309B2Method for preparing pregabalin intermediate 3-isobutylglutaric acid monoamideZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Mar 3, 2020·0 cites·9 claims
- 3641US9815801B2Method of refining valsartan comprising more than or equal to 10% D-isomersZHEJIANG HUAHAI PHARM CO LTD·Filed 2015·Granted Nov 14, 2017·0 cites·19 claims
- 3740US2020062720A1Novel preparation method for anti-gout drug lesinurad, and key intermediate thereofZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Application pending·0 cites
- 3839US11707461B2N-formyl vortioxetine and preparation method thereof and solid preparation of vortioxetineZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Jul 25, 2023·0 cites·3 claims
- 3939US9951036B2Method for preparing canagliflozin intermediate 2-(2-methyl-5-bromobenzyl)-5-(4-fluorophenyl)thiopheneZHEJIANG HUAHAI PHARM CO LTD·Filed 2015·Granted Apr 24, 2018·0 cites·6 claims
- 4038US11434210B2Method for synthesizing valsartanZHEJIANG HUAHAI PHARM CO LTD·Filed 2018·Granted Sep 6, 2022·0 cites·18 claims
- 4138US10131625B2Method for preparing 3-carbamoymethyl-5-methylhexanoic acid in recycling wayZHEJIANG HUAHAI PHARM CO LTD·Filed 2015·Granted Nov 20, 2018·0 cites·18 claims
- 4237US11919884B2Method for preparing voriconazole L-camphorsulphonate and voriconazoleZHEJIANG HUAHAI PHARM CO LTD·Filed 2016·Granted Mar 5, 2024·0 cites·19 claims
- 4337US10836751B2Methods for preparing Nintedanib and intermediates thereofZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Nov 17, 2020·0 cites·7 claims
- 4437US2025214933A1Method for purifying levetiracetam intermediateZHEJIANG HUAHAI PHARM CO LTD·Filed 2022·Application pending·0 cites
- 4536US10617649B2Preparation method of azacitidine for injectionZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Apr 14, 2020·0 cites·7 claims
- 4634US10633368B2Voriconazole intermediate and voriconazole synthesis methodZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Apr 28, 2020·0 cites·17 claims
- 4733US12227476B2Preparation method for levetiracetam intermediateZHEJIANG HUAHAI PHARM CO LTD·Filed 2020·Granted Feb 18, 2025·0 cites·6 claims
- 4832US10227293B2Method for preparing citalopram diol intermediateZHEJIANG HUAHAI PHARM CO LTD·Filed 2015·Granted Mar 12, 2019·0 cites·9 claims
- 4932US2018155326A1Method for preparing trityl candesartanZHEJIANG HUAHAI PHARM CO LTD·Filed 2015·Application pending·0 cites
- 5031US10781173B2Method for preparing apremilastZHEJIANG HUAHAI PHARM CO LTD·Filed 2017·Granted Sep 22, 2020·0 cites·13 claims
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