Patents by Inventor Jack Yongfeng Zhang

Jack Yongfeng Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230271770
    Abstract: The present disclosure generally pertains to a medical device and more particularly, a metered-dose inhaler (“MDI”) actuator capable of a targeted delivery of fine API particles having particle diameters of about 1.1 ?m or less to a portion of a patient's lungs where alveoli are located.
    Type: Application
    Filed: April 21, 2021
    Publication date: August 31, 2023
    Inventors: Jack Yongfeng Zhang, Mary Zi-ping Luo, Ying Wang, Yi Xia, Jie Fei Ding, Selina Su, Qingxia Han
  • Publication number: 20230256099
    Abstract: The present disclosure introduces safe and effective pharmaceutical formulations for intranasal delivery. Specifically, the present disclosure introduces the safe clinical use of bile acids or salts thereof as an enhancer to exhibit improved bioavailability and tissue tolerance. In several embodiments, pharmaceutical formulations including bile acids or salts thereof are provided. In several embodiments, the formulations are suitable and/or configured for the intranasal (IN) delivery, methods of manufacturing such formulations, and methods of treating patients using such formulations. The pharmaceutical formulations comprising bile acids, salts of bile acids, and/or combinations thereof. In several embodiments, bile acids, salts of bile acids, and/or combinations thereof are configured for use as absorption enhancers.
    Type: Application
    Filed: May 3, 2021
    Publication date: August 17, 2023
    Inventors: Jack Yongfeng Zhang, Mary Zi-ping Lou, Jie Fei Ding, Aili Bo
  • Patent number: 11726049
    Abstract: The present disclosure introduces methods for characterizing iron core carbohydrate colloid drug products, such as iron sucrose drug products. Disclosed methods enable the characterization of the iron core size of the iron core nanoparticles in iron carbohydrates as they exist in the formulation in solution, such as e.g. iron sucrose drug products, and more particularly, the average particle diameter size and size distribution(s) of the iron core nanoparticles. The disclosed methods apply small-angle X-ray scattering (SAXS) in parallel beam transmission geometry, with a sample mounted inside a capillary and centered in the X-ray beam, to iron carbohydrates, such as iron sucrose, in solution without the need to modify the sample, such as to remove unbound carbohydrates, dilute, or dry the sample, to accurately characterize the average iron core particle diameter size of the iron core nanoparticles.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: August 15, 2023
    Assignee: Amphastar Pharmaceuticals, Inc.
    Inventors: Jack Yongfeng Zhang, Mary Zi-Ping Luo, Thang Kien Chiu, Anthony Marrs, Selina Su
  • Publication number: 20230181500
    Abstract: The present disclosure introduces intranasal (IN) pharmaceutical formulations having naloxone or an opioid antagonist as the active agent, and an absorption enhancer, such as a bile acid, or a salt thereof, for IN delivery. The bile acid, or salt thereof, enhances absorption of naloxone or an opioid antagonist into the bloodstream of a human subject.
    Type: Application
    Filed: May 3, 2021
    Publication date: June 15, 2023
    Inventors: Jack Yongfeng Zhang, Mary Zi-ping Luo, Jie Fei Ding, Aili Bo, Jiewen Zhu
  • Publication number: 20230140033
    Abstract: Disclosed herein are pharmaceutical formulations including epinephrine that have increased epinephrine retention over long-term storage, e.g., 30-months. In one aspect, a formulation includes: one or more of 0.1 mg/mL of epinephrine or a pharmaceutically acceptable salt thereof provided without any overage, a tonicity regulating agent including 8.2 mg/mL of sodium chloride, a pH adjusting agent including a mixture of 1.5 mg/mL sodium citrate dihydrate, 3.3 mg/mL of citric acid monohydrate, and, optionally, an as-needed amount of sodium hydroxide to maintain the pH level of the formulation within a range of 3.6 to 4.0, 0.075 mg/mL of sodium metabisulfite, and 4 ?g/mL of ethylene diamine tetra-acetate disodium. The formulation has an API recovery of 94.5% or more after at least 30 months of storage at long-term storage conditions defined as 25° C.±2° C. at 1 atmosphere. In addition, in another aspect, a formulation includes 1 mg/mL of epinephrine and other ingredients.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 4, 2023
    Inventors: Jack Yongfeng Zhang, Mary Zi-ping Luo, Fonda Su, Marvin Lin, Jie Fei Ding, Justin Jun Wei, Wenbo Yu, Rong Zhou
  • Publication number: 20230137790
    Abstract: Disclosed herein are pharmaceutical formulations including epinephrine that have increased epinephrine retention over long-term storage, e.g., 30-months. In one aspect, a formulation includes: one or more of 0.1 mg/mL of epinephrine or a pharmaceutically acceptable salt thereof provided without any overage, a tonicity regulating agent including 8.2 mg/mL of sodium chloride, a pH adjusting agent including a mixture of 1.5 mg/mL sodium citrate dihydrate, 3.3 mg/mL of citric acid monohydrate, and, optionally, an as-needed amount of sodium hydroxide to maintain the pH level of the formulation within a range of 3.6 to 4.0, 0.075 mg/mL of sodium metabisulfite, and 4 ?g/mL of ethylene diamine tetra-acetate disodium. The formulation has an API recovery of 94.5% or more after at least 30 months of storage at long-term storage conditions defined as 25° C.±2° C. at 1 atmosphere. In addition, in another aspect, a formulation includes 1 mg/mL of epinephrine and other ingredients.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 4, 2023
    Inventors: Jack Yongfeng Zhang, Mary Zi-ping Luo, Fonda Su, Marvin Lin, Jie Fei Ding, Justin Jun Wei, Wenbo Yu, Rong Zhou
  • Publication number: 20230119833
    Abstract: The present disclosure provides NMR relaxation methods for characterizing iron carbohydrate drug products. The methods measure 13C and 1H nuclei relaxation parameters such as T1 and PWHH include performing 2D T1 NMR, 1D 13C NMR and 1H NMR to characterize certain physiochemical properties of iron sucrose drug products, for purposes of assessing bioequivalence between a tested iron sucrose product and a comparator product. The disclosure further provides a novel Fe(III)/Fe(II) reduction method using a new reducing agent Na2S2O5 and an 1H NMR method to monitor the Fe(III)/Fe(II) reduction process.
    Type: Application
    Filed: May 4, 2021
    Publication date: April 20, 2023
    Inventors: Jack Yongfeng ZHANG, Mary Zi-Ping LUO, Jie Fei DING, Justin Jun WEI, Richard BAO
  • Publication number: 20230124114
    Abstract: The present disclosure introduces methods for characterizing iron core carbohydrate colloid drug products, such as iron sucrose drug products. Disclosed methods enable the characterization of the iron core size of the iron core nanoparticles in iron carbohydrates as they exist in the formulation in solution, such as e.g. iron sucrose drug products, and more particularly, the average particle diameter size and size distribution(s) of the iron core nanoparticles. The disclosed methods apply small-angle X-ray scattering (SAXS) in parallel beam transmission geometry, with a sample mounted inside a capillary and centered in the X-ray beam, to iron carbohydrates, such as iron sucrose, in solution without the need to modify the sample, such as to remove unbound carbohydrates, dilute, or dry the sample, to accurately characterize the average iron core particle diameter size of the iron core nanoparticles.
    Type: Application
    Filed: May 4, 2021
    Publication date: April 20, 2023
    Inventors: Jack Yongfeng ZHANG, Mary Zi-Ping LUO, Thang Kien CHIU, Anthony MARRS, Selina SU
  • Publication number: 20230076626
    Abstract: Disclosed herein are pharmaceutical formulations including epinephrine that have increased epinephrine retention over long-term storage, e.g., 30-months. In one aspect, a formulation includes: one or more of 0.1 mg/mL of epinephrine or a pharmaceutically acceptable salt thereof provided without any overage, a tonicity regulating agent including 8.2 mg/mL of sodium chloride, a pH adjusting agent including a mixture of 1.5 mg/mL sodium citrate dihydrate, 3.3 mg/mL of citric acid monohydrate, and, optionally, an as-needed amount of sodium hydroxide to maintain the pH level of the formulation within a range of 3.6 to 4.0, 0.075 mg/mL of sodium metabisulfite, and 4 ?g/mL of ethylene diamine tetra-acetate disodium. The formulation has an API recovery of 94.5% or more after at least 30 months of storage at long-term storage conditions defined as 25° C.±2° C. at 1 atmosphere. In addition, in another aspect, a formulation includes 1 mg/mL of epinephrine and other ingredients.
    Type: Application
    Filed: October 28, 2022
    Publication date: March 9, 2023
    Inventors: Jack Yongfeng Zhang, Mary Zi-ping Luo, Fonda SU, Marvin Lin, Jie Fei Ding, Justin Jun Wei, Wenbo Yu, Rong Zhou
  • Patent number: 11524987
    Abstract: Methods are disclosed for producing highly purified recombinant human insulin (RHI) having a purity of 99.0% (w/w) or greater, a Total Impurity (not including the related substance desamido AsnA21-RHI, as specified by USP) of 0.8% (w/w) or less, and an impurity C of 0.1% (w/w) or less. Also disclosed are API compositions of highly purified RHI having a purity of 99.0% (w/w) or greater, a Total Impurity of 0.8% (w/w) or less, and an impurity C of 0.1% (w/w) or less.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: December 13, 2022
    Assignee: AMPHASTAR PHARMACEUTICALS, INC.
    Inventors: Jie Fei Ding, Aili Bo, Jack Yongfeng Zhang, Mary Zi-ping Luo, Zhongli Bao
  • Patent number: 11446360
    Abstract: A high-purity inhalable insulin material, used for preparing a pulmonary pharmaceutical product, includes insulin particles having a particle size at the micrometer level and having the following characteristics: (i) the purity of insulin is not less than 96% on the dried basis; (ii) the total amount of insulin-related impurities is not more than 2%; (iii) the total amount of solvent impurities, which is not a co-solvent formulation component for a pulmonary product, is not more than 0.03%; and (iv) the total amount of non-solvent impurities is not more than 0.3%. Up to 99% by volume of the insulin particles in the inhalable insulin have a particle size of less than 5 ?m, based on the total volume of the insulin particles. A high-efficiency method prepares high-purity inhalable insulin material. The yield rate for the high-efficiency method is 75 to 85% or more.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: September 20, 2022
    Assignee: AMPHASTAR PHARMACEUTCALS, INC.
    Inventors: Jeffrey Ding, Aili Bo, Mary Ziping Luo, Jack Yongfeng Zhang
  • Publication number: 20200216511
    Abstract: Methods are disclosed for producing highly purified recombinant human insulin (RHI) having a purity of 99.0% (w/w) or greater, a Total Impurity (not including the related substance desamido AsnA21-RHI, as specified by USP) of 0.8% (w/w) or less, and an impurity C of 0.1% (w/w) or less. Also disclosed are API compositions of highly purified RHI having a purity of 99.0% (w/w) or greater, a Total Impurity of 0.8% (w/w) or less, and an impurity C of 0.1% (w/w) or less.
    Type: Application
    Filed: September 25, 2019
    Publication date: July 9, 2020
    Inventors: Jie Fei Ding, Aili Bo, Jack Yongfeng Zhang, Mary Zi-ping Luo, Zhongli Bao
  • Publication number: 20190388514
    Abstract: A high-purity inhalable insulin material, used for preparing a pulmonary pharmaceutical product, includes insulin particles having a particle size at the micrometer level and having the following characteristics: (i) the purity of insulin is not less than 96% on the dried basis; (ii) the total amount of insulin-related impurities is not more than 2%; (iii) the total amount of solvent impurities, which is not a co-solvent formulation component for a pulmonary product, is not more than 0.03%; and (iv) the total amount of non-solvent impurities is not more than 0.3%. Up to 99% by volume of the insulin particles in the inhalable insulin have a particle size of less than 5 ?m, based on the total volume of the insulin particles. A high-efficiency method prepares high-purity inhalable insulin material. The yield rate for the high-efficiency method is 75 to 85% or more.
    Type: Application
    Filed: August 28, 2019
    Publication date: December 26, 2019
    Inventors: Jeffrey Ding, Aili Bo, Mary Ziping Luo, Jack Yongfeng Zhang
  • Patent number: 10406210
    Abstract: A high-purity inhalable insulin material, used for preparing a pulmonary pharmaceutical product, includes insulin particles having a particle size at the micrometer level and having the following characteristics: (i) the purity of insulin is not less than 96% on the dried basis; (ii) the total amount of insulin-related impurities is not more than 2%; (iii) the total amount of solvent impurities, which is not a co-solvent formulation component for a pulmonary product, is not more than 0.03%; and (iv) the total amount of non-solvent impurities is not more than 0.3%. Up to 99% by volume of the insulin particles in the inhalable insulin have a particle size of less than 5 ?m, based on the total volume of the insulin particles. A high-efficiency method prepares high-purity inhalable insulin material. The yield rate for the high-efficiency method is 75 to 85% or more.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: September 10, 2019
    Assignee: Amphastar Pharmaceuticals, Inc.
    Inventors: Jeffrey Ding, Aili Bo, Mary Ziping Luo, Jack Yongfeng Zhang
  • Patent number: 10322168
    Abstract: A high-purity inhalable insulin material, used for preparing a pulmonary pharmaceutical product, includes insulin particles having a particle size at the micrometer level and having the following characteristics: (i) the purity of insulin is not less than 96% on the dried basis; (ii) the total amount of insulin-related impurities is not more than 2%; (iii) the total amount of solvent impurities, which is not a co-solvent formulation component for a pulmonary product, is not more than 0.03%; and (iv) the total amount of non-solvent impurities is not more than 0.3%. Up to 99% by volume of the insulin particles in the inhalable insulin have a particle size of less than 5 ?m, based on the total volume of the insulin particles. A high-efficiency method prepares high-purity inhalable insulin material. The yield rate for the high-efficiency method is 75 to 85% or more.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: June 18, 2019
    Assignee: Amphastar Pharmaceuticals, Inc.
    Inventors: Jeffrey Ding, Aili Bo, Mary Ziping Luo, Jack Yongfeng Zhang
  • Patent number: 10258573
    Abstract: A method of preparing an inhalable insulin suitable for pulmonary delivery includes: dissolving an insulin raw material in an acidic solution to form a dissolved insulin solution; titrating the dissolved insulin solution with a buffer solution to form a suspension comprising micronized insulin particles; and stabilizing the micronized insulin particles.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: April 16, 2019
    Assignee: Amphastar Pharmaceuticals, Inc.
    Inventors: Jeffrey Ding, Aili Bo, Mary Ziping Luo, Jack Yongfeng Zhang
  • Publication number: 20170196942
    Abstract: A high-purity inhalable insulin material, used for preparing a pulmonary pharmaceutical product, includes insulin particles having a particle size at the micrometer level and having the following characteristics: (i) the purity of insulin is not less than 96% on the dried basis; (ii) the total amount of insulin-related impurities is not more than 2%; (iii) the total amount of solvent impurities, which is not a co-solvent formulation component for a pulmonary product, is not more than 0.03%; and (iv) the total amount of non-solvent impurities is not more than 0.3%. Up to 99% by volume of the insulin particles in the inhalable insulin have a particle size of less than 5 ?m, based on the total volume of the insulin particles. A high-efficiency method prepares high-purity inhalable insulin material. The yield rate for the high-efficiency method is 75 to 85% or more.
    Type: Application
    Filed: September 29, 2016
    Publication date: July 13, 2017
    Applicant: Amphastar Pharmaceuticals Inc.
    Inventors: Jeffrey Ding, Aili Bo, Mary Ziping Luo, Jack Yongfeng Zhang
  • Publication number: 20170196941
    Abstract: A high-purity inhalable insulin material, used for preparing a pulmonary pharmaceutical product, includes insulin particles having a particle size at the micrometer level and having the following characteristics: (i) the purity of insulin is not less than 96% on the dried basis; (ii) the total amount of insulin-related impurities is not more than 2%; (iii) the total amount of solvent impurities, which is not a co-solvent formulation component for a pulmonary product, is not more than 0.03%; and (iv) the total amount of non-solvent impurities is not more than 0.3%. Up to 99% by volume of the insulin particles in the inhalable insulin have a particle size of less than 5 ?m, based on the total volume of the insulin particles. A high-efficiency method prepares high-purity inhalable insulin material. The yield rate for the high-efficiency method is 75 to 85% or more.
    Type: Application
    Filed: January 7, 2016
    Publication date: July 13, 2017
    Inventors: Jeffrey Ding, Aili Bo, Mary Ziping Luo, Jack Yongfeng Zhang
  • Publication number: 20160008287
    Abstract: A method of preparing an inhalable insulin suitable for pulmonary delivery includes: dissolving an insulin raw material in an acidic solution to form a dissolved insulin solution; titrating the dissolved insulin solution with a buffer solution to form a suspension comprising micronized insulin particles; and stabilizing the micronized insulin particles.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Inventors: Jeffrey Ding, Aili Bo, Mary Ziping Luo, Jack Yongfeng Zhang
  • Publication number: 20150157649
    Abstract: Pharmaceutical compositions for long-term sustained release of bisphosphonate drugs are provided. In one embodiment, the composition includes an aqueous suspension of a solid which includes a salt of a bisphosphonate drug and a salt of pentavalent phosphorus oxoacid. The compositions can be used to treat a variety of bone diseases, including osteoporosis.
    Type: Application
    Filed: February 13, 2015
    Publication date: June 11, 2015
    Inventors: Jack Yongfeng Zhang, Mary Ziping Luo, Dingyuan Fei, Kevin Xie, Jie Fei Ding