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).
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Patent number: 12461095Abstract: 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: GrantFiled: January 19, 2023Date of Patent: November 4, 2025Assignee: BioLegend, Inc.Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
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Patent number: 12176207Abstract: 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: GrantFiled: April 22, 2020Date of Patent: December 24, 2024Assignee: X-FAB Texas, Inc.Inventors: Daniel Mauch, Yon Lee, John Ransom, Stephen Duran
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Publication number: 20230272344Abstract: 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: ApplicationFiled: January 19, 2023Publication date: August 31, 2023Applicant: BIOLEGEND, INC.Inventors: DHANESH GOHEL, HONG ZHANG, JOHN RANSOM
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Publication number: 20230160884Abstract: 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: ApplicationFiled: January 19, 2023Publication date: May 25, 2023Applicant: BIOLEGEND, INC.Inventors: DHANESH GOHEL, HONG ZHANG, JOHN RANSOM
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Patent number: 11630104Abstract: 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: GrantFiled: December 18, 2019Date of Patent: April 18, 2023Assignee: BIOLEGEND, INC.Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
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Patent number: 11608489Abstract: 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: GrantFiled: April 30, 2017Date of Patent: March 21, 2023Assignee: BIOLEGEND, INC.Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
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Publication number: 20210335607Abstract: 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: ApplicationFiled: April 22, 2020Publication date: October 28, 2021Inventors: Daniel Mauch, Yon Lee, John Ransom, Stephen Duran
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Publication number: 20200200746Abstract: 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: ApplicationFiled: December 18, 2019Publication date: June 25, 2020Inventors: Dhanesh GOHEL, Hong ZHANG, John RANSOM
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Patent number: 10585088Abstract: 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: GrantFiled: April 30, 2016Date of Patent: March 10, 2020Assignee: BioLegend, Inc.Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
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Patent number: 10545138Abstract: 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: GrantFiled: April 30, 2016Date of Patent: January 28, 2020Assignee: BioLegend, Inc.Inventors: Dhanesh Gohel, Hong Zhang, John Ransom
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Publication number: 20190127697Abstract: 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: ApplicationFiled: April 30, 2017Publication date: May 2, 2019Inventors: Dhanesh GOHEL, Hong ZHANG, John RANSOM
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Publication number: 20160320376Abstract: 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: ApplicationFiled: April 30, 2016Publication date: November 3, 2016Inventors: Dhanesh GOHEL, Hong ZHANG, John RANSOM
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Publication number: 20050249635Abstract: 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: ApplicationFiled: May 7, 2004Publication date: November 10, 2005Applicant: Novasite Pharmaceuticals, Inc.Inventors: Alex Okun, Teresa Bennett, Andrew Beemink, David Sieg, John Ransom
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Publication number: 20050249642Abstract: 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: ApplicationFiled: May 7, 2004Publication date: November 10, 2005Applicant: Novasite Pharmaceuticals, Inc.Inventors: Alex Okun, John Ransom
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Publication number: 20050021241Abstract: 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: ApplicationFiled: May 7, 2004Publication date: January 27, 2005Inventors: Juan Ballesteros, Teresa Bennett, Alex Okun, Andrew Beernink, John Ransom
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Publication number: 20050009060Abstract: 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: ApplicationFiled: May 7, 2004Publication date: January 13, 2005Inventors: Andrew Beernink, Teresa Bennett, Alex Okun, Juan Ballesteros, John Ransom
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Patent number: 6280967Abstract: 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: GrantFiled: August 5, 1999Date of Patent: August 28, 2001Assignee: Axiom Biotechnologies, Inc.Inventors: John Ransom, Ilya Okun, Alex Okun
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Patent number: 6242209Abstract: 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: GrantFiled: May 10, 2000Date of Patent: June 5, 2001Assignee: Axiom Biotechnologies, Inc.Inventors: John Ransom, Ilya Okun, Alex Okun