Patents by Inventor John Ransom

John Ransom 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).

  • Patent number: 12461095
    Abstract: Processes and compositions are described for preparing new, colloidally stable, coated nanomagnetic particles useful for both in-vitro and in-vivo biomedical applications, including cell targeting and capturing cells, microorganisms, and cellular organelles or entities such as exosomes. These nanomagnetic particles can also be used as imaging contrast agents due to their small size and high magnetic moment. The nanomagnetic particles include a series of sequentially added, stabilizing surface coatings rendered onto nano-sized magnetic crystal clusters (e.g., magnetite particles) to impart colloidal stability in complex biological samples with minimal leaching of the coating materials, high binding capacity, and low non-specific binding. Another benefit of this invention is the ability to utilize both external and internal magnetic field-generating separation devices to effect separation of the magnetic nanoparticles.
    Type: Grant
    Filed: January 19, 2023
    Date of Patent: November 4, 2025
    Assignee: BioLegend, Inc.
    Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
  • Patent number: 12176207
    Abstract: A method of forming a semiconductor structure, the method comprises: providing a non-planar surface in the manufacturing of a silicon carbide (SiC) device; depositing a reflowable dielectric material on said non-planar surface; and heating said reflowable dielectric material to a temperature and for a time sufficient to cause reflowing of said reflowable dielectric material and thereby provide a dielectric layer comprising a substantially planar surface, wherein said dielectric layer is substantially free of voids.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: December 24, 2024
    Assignee: X-FAB Texas, Inc.
    Inventors: Daniel Mauch, Yon Lee, John Ransom, Stephen Duran
  • Publication number: 20230272344
    Abstract: The methods of the invention employ targeted magnetic particles, preferably targeted nanomagnetic particles, and targeted buoyant particles such as buoyant microparticles and microbubbles. Among the benefits of the invention is the ability to combine targeted magnetic particles with differentially targeted buoyant particles to achieve separation of two or more specifically cell targeted populations during the same work flow.
    Type: Application
    Filed: January 19, 2023
    Publication date: August 31, 2023
    Applicant: BIOLEGEND, INC.
    Inventors: DHANESH GOHEL, HONG ZHANG, JOHN RANSOM
  • Publication number: 20230160884
    Abstract: Processes and compositions are described for preparing new, colloidally stable, coated nanomagnetic particles useful for both in-vitro and in-vivo biomedical applications, including cell targeting and capturing cells, microorganisms, and cellular organelles or entities such as exosomes. These nanomagnetic particles can also be used as imaging contrast agents due to their small size and high magnetic moment. The nanomagnetic particles include a series of sequentially added, stabilizing surface coatings rendered onto nano-sized magnetic crystal clusters (e.g., magnetite particles) to impart colloidal stability in complex biological samples with minimal leaching of the coating materials, high binding capacity, and low non-specific binding. Another benefit of this invention is the ability to utilize both external and internal magnetic field-generating separation devices to effect separation of the magnetic nanoparticles.
    Type: Application
    Filed: January 19, 2023
    Publication date: May 25, 2023
    Applicant: BIOLEGEND, INC.
    Inventors: DHANESH GOHEL, HONG ZHANG, JOHN RANSOM
  • Patent number: 11630104
    Abstract: Processes and compositions are described for preparing new, colloidally stable, coated nanomagnetic particles useful for both in-vitro and in-vivo biomedical applications, including cell targeting and capturing cells, microorganisms, and cellular organelles or entities such as exosomes. These nanomagnetic particles can also be used as imaging contrast agents due to their small size and high magnetic moment. The nanomagnetic particles include a series of sequentially added, stabilizing surface coatings rendered onto nano-sized magnetic crystal clusters (e.g., magnetite particles) to impart colloidal stability in complex biological samples with minimal leaching of the coating materials, high binding capacity, and low non-specific binding. Another benefit of this invention is the ability to utilize both external and internal magnetic field-generating separation devices to effect separation of the magnetic nanoparticles.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: April 18, 2023
    Assignee: BIOLEGEND, INC.
    Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
  • Patent number: 11608489
    Abstract: The methods of the invention employ targeted magnetic particles, preferably targeted nanomagnetic particles, and targeted buoyant particles such as buoyant microparticles and microbubbles. Among the benefits of the invention is the ability to combine targeted magnetic particles with differentially targeted buoyant particles to achieve separation of two or more specifically cell targeted populations during the same work flow.
    Type: Grant
    Filed: April 30, 2017
    Date of Patent: March 21, 2023
    Assignee: BIOLEGEND, INC.
    Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
  • Publication number: 20210335607
    Abstract: A method of forming a semiconductor structure, the method comprises: providing a non-planar surface in the manufacturing of a silicon carbide (SiC) device; depositing a reflowable dielectric material on said non-planar surface; and heating said reflowable dielectric material to a temperature and for a time sufficient to cause reflowing of said reflowable dielectric material and thereby provide a dielectric layer comprising a substantially planar surface, wherein said dielectric layer is substantially free of voids.
    Type: Application
    Filed: April 22, 2020
    Publication date: October 28, 2021
    Inventors: Daniel Mauch, Yon Lee, John Ransom, Stephen Duran
  • Publication number: 20200200746
    Abstract: Processes and compositions are described for preparing new, colloidally stable, coated nanomagnetic particles useful for both in-vitro and in-vivo biomedical applications, including cell targeting and capturing cells, microorganisms, and cellular organelles or entities such as exosomes. These nanomagnetic particles can also be used as imaging contrast agents due to their small size and high magnetic moment. The nanomagnetic particles include a series of sequentially added, stabilizing surface coatings rendered onto nano-sized magnetic crystal clusters (e.g., magnetite particles) to impart colloidal stability in complex biological samples with minimal leaching of the coating materials, high binding capacity, and low non-specific binding. Another benefit of this invention is the ability to utilize both external and internal magnetic field-generating separation devices to effect separation of the magnetic nanoparticles.
    Type: Application
    Filed: December 18, 2019
    Publication date: June 25, 2020
    Inventors: Dhanesh GOHEL, Hong ZHANG, John RANSOM
  • Patent number: 10585088
    Abstract: Processes and compositions are described for preparing new, colloidally stable, coated nanomagnetic particles useful for both in-vitro and in-vivo biomedical applications, including cell targeting and capturing cells, microorganisms, and cellular organelles or entities such as exosomes. These nanomagnetic particles can also be used as imaging contrast agents due to their small size and high magnetic moment. The nanomagnetic particles include a series of sequentially added, stabilizing surface coatings rendered onto nano-sized magnetic crystal clusters (e.g., magnetite particles) to impart colloidal stability in complex biological samples with minimal leaching of the coating materials, high binding capacity, and low non-specific binding. Another benefit of this invention is the ability to utilize both external and internal magnetic field-generating separation devices to effect separation of the magnetic nanoparticles.
    Type: Grant
    Filed: April 30, 2016
    Date of Patent: March 10, 2020
    Assignee: BioLegend, Inc.
    Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
  • Patent number: 10545138
    Abstract: Processes and compositions are described for preparing new, colloidally stable, coated nanomagnetic particles useful for both in-vitro and in-vivo biomedical applications, including cell targeting and capturing cells, microorganisms, and cellular organelles or entities such as exosomes. These nanomagnetic particles can also be used as imaging contrast agents due to their small size and high magnetic moment. The nanomagnetic particles include a series of sequentially added, stabilizing surface coatings rendered onto nano-sized magnetic crystal clusters (e.g., magnetite particles) to impart colloidal stability in complex biological samples with minimal leaching of the coating materials, high binding capacity, and low non-specific binding. Another benefit of this invention is the ability to utilize both external and internal magnetic field-generating separation devices to effect separation of the magnetic nanoparticles.
    Type: Grant
    Filed: April 30, 2016
    Date of Patent: January 28, 2020
    Assignee: BioLegend, Inc.
    Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
  • Publication number: 20190127697
    Abstract: Processes and compositions are provided for performing magnetibuoyant separations of different biomolecules (e.g., cells, organelles, etc.) in a biological sample, as well as compositions and kits for performing such methods. Compositions containing the separated biomolecules, and methods for using the same for in-vitro and in-vivo biomedical applications, are also provided. The magnetibuoyant methods of the invention employ targeted magnetic particles, preferably targeted nanomagnetic particles, and targeted buoyant particles such as buoyant microparticles and microbubbles. Among the benefits of the invention is the ability to combine targeted magnetic particles with differentially targeted buoyant particles to achieve separation of two or more specifically cell targeted populations during the same work flow.
    Type: Application
    Filed: April 30, 2017
    Publication date: May 2, 2019
    Inventors: Dhanesh GOHEL, Hong ZHANG, John RANSOM
  • Publication number: 20160320376
    Abstract: Processes and compositions are described for preparing new, colloidally stable, coated nanomagnetic particles useful for both in-vitro and in-vivo biomedical applications, including cell targeting and capturing cells, microorganisms, and cellular organelles or entities such as exosomes. These nanomagnetic particles can also be used as imaging contrast agents due to their small size and high magnetic moment. The nanomagnetic particles include a series of sequentially added, stabilizing surface coatings rendered onto nano-sized magnetic crystal clusters (e.g., magnetite particles) to impart colloidal stability in complex biological samples with minimal leaching of the coating materials, high binding capacity, and low non-specific binding. Another benefit of this invention is the ability to utilize both external and internal magnetic field-generating separation devices to effect separation of the magnetic nanoparticles.
    Type: Application
    Filed: April 30, 2016
    Publication date: November 3, 2016
    Inventors: Dhanesh GOHEL, Hong ZHANG, John RANSOM
  • Publication number: 20050249635
    Abstract: A system and method of mixing and injecting discrete sample mixtures into a flow cytometer or other sample analysis apparatus may generally comprise a sample injection guide coupling a liquid handling apparatus with a sample analysis apparatus and facilitating injection of discrete sample mixtures into a fluidic system of the apparatus.
    Type: Application
    Filed: May 7, 2004
    Publication date: November 10, 2005
    Applicant: Novasite Pharmaceuticals, Inc.
    Inventors: Alex Okun, Teresa Bennett, Andrew Beemink, David Sieg, John Ransom
  • Publication number: 20050249642
    Abstract: A system and method of mixing and injecting discrete sample mixtures into a flow cytometer or other sample analysis apparatus may generally comprise a sample injection guide coupling a liquid handling apparatus with a sample analysis apparatus and facilitating injection of discrete sample mixtures into a fluidic system of the apparatus.
    Type: Application
    Filed: May 7, 2004
    Publication date: November 10, 2005
    Applicant: Novasite Pharmaceuticals, Inc.
    Inventors: Alex Okun, John Ransom
  • Publication number: 20050021241
    Abstract: The present disclosure provides compositions and methods for high throughput Gain of Function (GOF) sorting to discover and develop novel and highly selective candidate drug molecules. High throughput GOF sorting includes: mutating a single residue in a receptor and/or ligand; measuring the affinity and functional activity of the resulting ligand target-ligand interaction; and carrying out multiple rounds of mutation and measurement to determine which residues provide key interaction points underlying the functional activity of a ligand target-ligand interaction. Further, the present disclosure provides methods and compositions for high throughput and high precision GOF sorting, such that large numbers of mutations can be generated and screened rapidly, and GOF compounds can be identified and isolated.
    Type: Application
    Filed: May 7, 2004
    Publication date: January 27, 2005
    Inventors: Juan Ballesteros, Teresa Bennett, Alex Okun, Andrew Beernink, John Ransom
  • Publication number: 20050009060
    Abstract: The present disclosure provides systems for multiplexed multitarget screening of cell populations having one or more wild type or mutated ligand targets and measuring cell responses to ligands using high throughput screening techniques, including flow cytometry (FCM). The method includes the steps of: 1) developing cell populations to be screened; 2) staining cell populations using one or more fluorochromes to yield a distinct excitation/emission signature for each cell population; 3) combining labelled cell populations into a single mixed suspension; 4) analyzing populations to resolve them on the basis of their unique signature; and 5) resolving individual populations and deconvoluting data to extract meaningful information about populations.
    Type: Application
    Filed: May 7, 2004
    Publication date: January 13, 2005
    Inventors: Andrew Beernink, Teresa Bennett, Alex Okun, Juan Ballesteros, John Ransom
  • Patent number: 6280967
    Abstract: An apparatus and method for real-time measurement of a cellular response of a test compound or series of test compounds (303) on a flowing suspension of cells (349), in which a homogeneous suspension of each member of a series of cell types (349) is combined with a concentration of a test compound (303), directed through a detection zone (355), and a cellular response of the living cells is measured in real time as the cells in the test mixture are flowing through the detection zone (355). The apparatus may be used in automated screening of libraries of compounds, and is capable of real-time variation of concentrations of test and standard compounds and generation of dose/response profiles within a short time span.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: August 28, 2001
    Assignee: Axiom Biotechnologies, Inc.
    Inventors: John Ransom, Ilya Okun, Alex Okun
  • Patent number: 6242209
    Abstract: An apparatus and method for real-time measurement of a cellular response of a test compound or series of test compounds (303) on a flowing suspension of cells (349), in which a homogeneous suspension of each member of a series of cell types (349) is combined with a concentration of a test compound (303), directed through a detection zone (355), and a cellular response of the living cells is measured in real time as the cells in the test mixture are flowing through the detection zone (355). The apparatus may be used in automated screening of libraries of compounds, and is capable of real-time variation of concentrations of test and standard compounds and generation of dose/response profiles within a short time span.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: June 5, 2001
    Assignee: Axiom Biotechnologies, Inc.
    Inventors: John Ransom, Ilya Okun, Alex Okun