Patents by Inventor James W. Mitchell

James W. Mitchell 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: 20220396772
    Abstract: Embodiments of the present disclosure relate generally to the production of therapeutic mesenchymal stem cells (MSCs). More particularly, the present disclosure relates to the use of cell culture compositions and methods for generating MSCs that secrete neurotrophic factors and synaptic organizing agents for the treatment of neurodegenerative diseases such as Amyotrophic Lateral Sclerosis (ALS). As such, the present disclosure addresses the need for establishing a reliable source of therapeutic stem cells useful for the treatment of neurodegenerative diseases.
    Type: Application
    Filed: January 24, 2022
    Publication date: December 15, 2022
    Inventors: Hiroshi Nishimune, Richard Barohn, Buddhadeb Dawn, Yomna Badawi, James W. Mitchell, Rupal Soder
  • Patent number: 11286462
    Abstract: Embodiments of the present disclosure relate generally to the production of therapeutic mesenchymal stem cells (MSCs). More particularly, the present disclosure relates to the use of cell culture compositions and methods for generating MSCs that secrete neurotrophic factors and synaptic organizing agents for the treatment of neurodegenerative diseases such as Amyotrophic Lateral Sclerosis (ALS). As such, the present disclosure addresses the need for establishing a reliable source of therapeutic stem cells useful for the treatment of neurodegenerative diseases.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: March 29, 2022
    Assignee: University of Kansas
    Inventors: Hiroshi Nishimune, Richard Barohn, Buddhadeb Dawn, Yomna Badawi, James W. Mitchell, Rupal Soder
  • Patent number: 11267950
    Abstract: A method is provided for synthesizing PLA/apatite composites with improved mechanical strength. In one aspect, a calcium-phosphate/phosphonate hybrid shell is developed to incorporate more reactive hydroxyl groups onto hydroxyapatite (HA) particles. PLA is covalently bonded to HA calcium phosphate hybrid shell, creating a strong interphase between HA and PLA, thus significantly improve the mechanical strength in comparison to that of non-modified HA.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: March 8, 2022
    Assignee: HOWARD UNIVERSITY
    Inventors: Tongxin Wang, James W. Mitchell
  • Publication number: 20210251879
    Abstract: Described herein are block copolymers having hydrophobic blocks and hydrophilic blocks which are effective in binding to the surface of hard tissue; compositions comprising the same, as well as methods of making and using the same.
    Type: Application
    Filed: February 12, 2021
    Publication date: August 19, 2021
    Applicants: Colgate-Palmolive Company, Howard University
    Inventors: Tongxin WANG, Yanda LEI, James W. MITCHELL, Lynette ZAIDEL, Jian-Hong QIU, Mahmoud HASSAN
  • Patent number: 10918588
    Abstract: Described herein are block copolymers having hydrophobic blocks and hydrophilic blocks which are effective in binding to the surface of hard tissue; compositions comprising the same, as well as methods of making and using the same.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: February 16, 2021
    Assignees: Colgate-Palmolive Company, Howard University
    Inventors: Tongxin Wang, Yanda Lei, James W. Mitchell, Lynette Zaidel, Jian-hong Qiu, Mahmoud Hassan
  • Publication number: 20210038638
    Abstract: Covalently cross-linked copolymers are described herein. More specifically, polysaccharide-polyamine copolymeric matrices or structures and cationic copolymeric matrices are described herein. The polysaccharide-polyamine copolymers, when protonated, can form cationic copolymeric matrices having exceptionally high densities of cationic sites. In one form, the covalently cross-linked copolymers provide a three-dimensional structure, especially when hydrated.
    Type: Application
    Filed: October 22, 2020
    Publication date: February 11, 2021
    Applicant: HOWARD UNIVERSITY
    Inventors: James W MITCHELL, Dazhi YANG
  • Publication number: 20200399610
    Abstract: Embodiments of the present disclosure relate generally to the production of therapeutic mesenchymal stem cells (MSCs). More particularly, the present disclosure relates to the use of cell culture compositions and methods for generating MSCs that secrete neurotrophic factors and synaptic organizing agents for the treatment of neurodegenerative diseases such as Amyotrophic Lateral Sclerosis (ALS). As such, the present disclosure addresses the need for establishing a reliable source of therapeutic stem cells useful for the treatment of neurodegenerative diseases.
    Type: Application
    Filed: September 14, 2018
    Publication date: December 24, 2020
    Inventors: Hiroshi Nishimune, Richard Barohn, Buddhadeb Dawn, Yomna Badawi, James W Mitchell, Rupal Soder
  • Patent number: 10849927
    Abstract: Covalently cross-linked copolymers are described herein. More specifically, polysaccharide-polyamine copolymeric matrices or structures and cationic copolymeric matrices are described herein. The polysaccharide-polyamine copolymers, when protonated, can form cationic copolymeric matrices having exceptionally high densities of cationic sites. In one form, the covalently cross-linked copolymers provide a three-dimensional structure, especially when hydrated.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: December 1, 2020
    Assignee: HOWARD UNIVERSITY
    Inventors: James W. Mitchell, Dazhi Yang
  • Patent number: 10723809
    Abstract: Microcarriers, matrices and scaffolds for growing mammalian cells are provided which include copolymer particles and matrices comprising of polysaccharide-polyamine copolymers. The copolymeric particles and matrices have a pore size of at least 50 microns and permit the mammalian cells to grow both on an exterior surface of the particles and matrices and within an interior of the particles and matrices. Methods for making such microcarriers, matrices and scaffolds, and compositions are also provided. Methods for growing mammalian cells utilizing such microcarriers, matrices and scaffolds and compositions are also provided.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: July 28, 2020
    Assignee: HOWARD UNIVERSITY
    Inventors: James W. Mitchell, Dazhi Yang
  • Publication number: 20200190281
    Abstract: A method is provided for synthesizing PLA/apatite composites with improved mechanical strength. In one aspect, a calcium-phosphate/phosphonate hybrid shell is developed to incorporate more reactive hydroxyl groups onto hydroxyapatite (HA) particles. PLA is covalently bonded to HA calcium phosphate hybrid shell, creating a strong interphase between HA and PLA, thus significantly improve the mechanical strength in comparison to that of non-modified HA.
    Type: Application
    Filed: July 24, 2019
    Publication date: June 18, 2020
    Applicant: Howard University
    Inventors: Tongxin Wang, James W. Mitchell
  • Patent number: 10400083
    Abstract: A method is provided for synthesizing PLA/apatite composites with improved mechanical strength. In one aspect, a calcium-phosphate/phosphonate hybrid shell is developed to incorporate more reactive hydroxyl groups onto hydroxyapatite (HA) particles. PLA is covalently bonded to HA calcium phosphate hybrid shell, creating a strong interphase between HA and PLA, thus significantly improve the mechanical strength in comparison to that of non-modified HA.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: September 3, 2019
    Assignee: Howard University
    Inventors: Tongxin Wang, James W. Mitchell
  • Publication number: 20180099007
    Abstract: Covalently cross-linked copolymers are described herein. More specifically, polysaccharide-polyamine copolymeric matrices or structures and cationic copolymeric matrices are described herein. The polysaccharide-polyamine copolymers, when protonated, can form cationic copolymeric matrices having exceptionally high densities of cationic sites. In one form, the covalently cross-linked copolymers provide a three-dimensional structure, especially when hydrated.
    Type: Application
    Filed: March 18, 2016
    Publication date: April 12, 2018
    Applicant: Howard University
    Inventors: James W. Mitchell, Dazhi Yang
  • Publication number: 20180094080
    Abstract: Microcarriers, matrices and scaffolds for growing mammalian cells are provided which include copolymer particles and matrices comprising of polysaccharide-polyamine copolymers. The copolymeric particles and matrices have a pore size of at least 50 microns and permit the mammalian cells to grow both on an exterior surface of the particles and matrices and within an interior of the particles and matrices. Methods for making such microcarriers, matrices and scaffolds, and compositions are also provided. Methods for growing mammalian cells utilizing such microcarriers, matrices and scaffolds and compositions are also provided.
    Type: Application
    Filed: March 18, 2016
    Publication date: April 5, 2018
    Applicant: Howard University
    Inventors: James W. Mitchell, Dazhi Yang
  • Patent number: 9511343
    Abstract: Methods and apparatus to control reaction rates of chemical reactions. Methods can include mixing chemical reactants to provide a reaction mixture, at least one chemical reactant being magnetic; and applying a magnetic field to the reaction mixture, the magnetic field being applied to effect a control of the rate of a chemical reaction between the reactants in the reaction mixture, the magnetic field being effective to change the reaction rate over a chemical reaction between the same reactants at the same pressure and temperature where the reaction mixture is not exposed to the magnetic field.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: December 6, 2016
    Assignee: Howard University
    Inventors: Reginald B. Little, James W. Mitchell
  • Patent number: 9399708
    Abstract: A method is provided for synthesizing polylactide/calcium phosphate composites. In one aspect, an intermediate silanized calcium phosphate material calcium-phosphate/phosphonate is developed to improve the tensile strength of the composite.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: July 26, 2016
    Assignee: Howard University
    Inventors: Tongxin Wang, James W. Mitchell
  • Publication number: 20150283061
    Abstract: Described herein are block copolymers having hydrophobic blocks and hydrophilic blocks which are effective in binding to the surface of hard tissue; compositions comprising the same, as well as methods of making and using the same.
    Type: Application
    Filed: November 8, 2013
    Publication date: October 8, 2015
    Inventors: Tongxin WANG, Yanda LEI, James W. MITCHELL, Lynette ZAIDEL, Jianhong QIU, Mahmoud HASSAN
  • Publication number: 20150065632
    Abstract: A method is provided for synthesizing PLA/apatite composites with improved mechanical strength. In one aspect, a calcium-phosphate/phosphonate hybrid shell is developed to incorporate more reactive hydroxyl groups onto hydroxyapatite (HA) particles. PLA is covalently bonded to HA calcium phosphate hybrid shell, creating a strong interphase between HA and PLA, thus significantly improve the mechanical strength in comparison to that of non-modified HA.
    Type: Application
    Filed: March 8, 2013
    Publication date: March 5, 2015
    Applicant: HOWARD UNIVERSITY
    Inventors: Tongxin Wang, James W. Mitchell
  • Publication number: 20150065739
    Abstract: A method is provided for synthesizing polylactide/calcium phosphate composites. In one aspect, an intermediate silanized calcium phosphate material calcium-phosphate/phosphonate is developed to improve the tensile strength of the composite.
    Type: Application
    Filed: March 8, 2013
    Publication date: March 5, 2015
    Applicant: HOWARD UNIVERSITY
    Inventors: Tongxin Wang, James W. Mitchell
  • Publication number: 20140147369
    Abstract: Methods and apparatus to control reaction rates of chemical reactions. Methods can include mixing chemical reactants to provide a reaction mixture, at least one chemical reactant being magnetic; and applying a magnetic field to the reaction mixture, the magnetic field being applied to effect a control of the rate of a chemical reaction between the reactants in the reaction mixture, the magnetic field being effective to change the reaction rate over a chemical reaction between the same reactants at the same pressure and temperature where the reaction mixture is not exposed to the magnetic field.
    Type: Application
    Filed: March 22, 2012
    Publication date: May 29, 2014
    Inventors: Reginald B. Little, James W. Mitchell
  • Publication number: 20140134116
    Abstract: Described herein are block copolymers having hydrophobic blocks and hydrophilic blocks which are effective in binding to the surface of hard tissue; compositions comprising the same, as well as methods of making and using the same are also described.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 15, 2014
    Inventors: Tongxin Wang, Yanda Lei, James W. Mitchell, Lynette Zaidel, Jianhong Qiu, Mahmoud Hassan