Patents by Inventor Junfen Ma

Junfen Ma 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: 20260028578
    Abstract: Provided herein are methods for isolating intracellular products (e.g., viral particles or nucleic acid molecules) from a suspension of cells. Also provided herein are also methods for mechanically lysing cells. In some embodiments, provided herein are methods for mechanically lysing cells for isolating intracellular products (e.g., viral particles or nucleic molecules) from a suspension of cells. Also provided herein are apparatuses and cartridges for use in mechanically lysing cells.
    Type: Application
    Filed: October 2, 2025
    Publication date: January 29, 2026
    Inventors: Ethan Lovdal Butler, Mario G. Jabra, Junfen MA, Yuanli Song
  • Publication number: 20250230187
    Abstract: Methods of producing an aqueous formulation of an antigen-binding protein or enhancing re-oxidation of an antigen-binding protein are disclosed. The methods comprise (a) contacting an aqueous solution comprising antigen-binding protein molecules with a charged depth filter under conditions sufficient to enhance re-oxidation of the antigen-binding protein molecules and achieve a decrease in the percentage of reduced antigen-binding protein molecules, compared to the percentage of reduced anti-gen-binding protein molecules observed prior to step (a); and (b) optionally, measuring the amount or relative amount of reduced antigen-binding protein molecules. Formulations comprising a re-oxidized antigen-binding protein are also described.
    Type: Application
    Filed: January 15, 2025
    Publication date: July 17, 2025
    Inventors: Hai Hoang, Rafael Gonzalez, Junfen Ma
  • Publication number: 20250163154
    Abstract: The present disclosure relates to methods of re-oxidizing an antigen-binding protein.
    Type: Application
    Filed: January 15, 2025
    Publication date: May 22, 2025
    Inventors: Junfen Ma, Elaheh Binabaji, Chio Mui Chan, Hadley Krizner, Diana Woehle
  • Publication number: 20240158761
    Abstract: The disclosure provides methods of purifying adeno-associated virus (AAV) particles by introducing a flocculant step into a large scale a manufacturing process, thereby improving AAV particle purity and yield.
    Type: Application
    Filed: November 16, 2023
    Publication date: May 16, 2024
    Applicant: Genzyme Corporation
    Inventors: Bruno Figueroa, Qingxuan Li, Junfen Ma, Yuanli Song
  • Publication number: 20230069095
    Abstract: The present disclosure relates to methods of re-oxidizing an antigen-binding protein.
    Type: Application
    Filed: August 24, 2022
    Publication date: March 2, 2023
    Inventors: Elaheh Binabaji, Chio Mui Chan, Hadley Krizner, Junfen Ma, Diana Woehle
  • Patent number: 11447547
    Abstract: The present disclosure relates to methods of re-oxidizing an antigen-binding protein.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: September 20, 2022
    Assignee: AMGEN INC.
    Inventors: Elaheh Binabaji, Chio Mui Chan, Hadley Krizner, Junfen Ma, Diana Woehle
  • Publication number: 20210363180
    Abstract: Methods of producing an aqueous formulation of an antigen-binding protein or enhancing re-oxidation of an antigen-binding protein are disclosed. The methods comprise (a) contacting an aqueous solution comprising antigen-binding protein molecules with a charged depth filter under conditions sufficient to enhance re-oxidation of the antigen-binding protein molecules and achieve a decrease in the percentage of reduced antigen-binding protein molecules, compared to the percentage of reduced anti-gen-binding protein molecules observed prior to step (a); and (b) optionally, measuring the amount or relative amount of reduced an¬tigen-binding protein molecules. Formulations comprising a re-oxidized antigen-binding protein are also described.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 25, 2021
    Inventors: Hai Hoang, Rafael Gonzalez, Junfen Ma
  • Patent number: 11098079
    Abstract: Methods of producing an aqueous formulation of an antigen-binding protein or enhancing re-oxidation of an antigen-binding protein are disclosed. The methods comprise (a) contacting an aqueous solution comprising antigen-binding protein molecules with a charged depth filter under conditions sufficient to enhance re-oxidation of the antigen-binding protein molecules and achieve a decrease in the percentage of reduced antigen-binding protein molecules, compared to the percentage of reduced antigen-binding protein molecules observed prior to step (a); and (b) optionally, measuring the amount or relative amount of reduced antigen-binding protein molecules. Formulations comprising a re-oxidized antigen-binding protein are also described.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: August 24, 2021
    Assignee: AMGEN INC.
    Inventors: Hai Hoang, Rafael Gonzalez, Junfen Ma
  • Publication number: 20180230180
    Abstract: Methods of producing an aqueous formulation of an antigen-binding protein or enhancing re-oxidation of an antigen-binding protein are disclosed. The methods comprise (a) contacting an aqueous solution comprising antigen-binding protein molecules with a charged depth filter under conditions sufficient to enhance re-oxidation of the antigen-binding protein molecules and achieve a decrease in the percentage of reduced antigen-binding protein molecules, compared to the percentage of reduced antigen-binding protein molecules observed prior to step (a); and (b) optionally, measuring the amount or relative amount of reduced antigen-binding protein molecules. Formulations comprising a re-oxidized antigen-binding protein are also described.
    Type: Application
    Filed: August 12, 2016
    Publication date: August 16, 2018
    Inventors: Hai Hoang, Rafael Gonzalez, Junfen Ma
  • Patent number: 10023608
    Abstract: Disclosed are methods of purifying a protein sample. More specifically, provide are methods of removing or reducing the amount of high molecular weight species and/or high mannose species from a protein sample using a mixed mode chromatography step and a hydrophobic interaction chromatography step.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 17, 2018
    Assignee: AMGEN INC.
    Inventors: Junfen Ma, Xiaoyang Zhao, Brian Williamson