Patents by Inventor Ronald F. Childs

Ronald F. Childs 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: 20180318773
    Abstract: Disclosed is a composite material comprising a support member that has a plurality of pores extending therethrough, which pores are durably filled or coated with a non-crosslinked gel polymer. Also disclosed is a process for the preparation of the composite material, use of the composite material as a separation medium, and a filtering apparatus comprising the composite material.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 8, 2018
    Inventors: Ronald F. Childs, Elena N. Komkova, Jinsheng Zhou, Alicja M. Mika, Tapan K. Dey
  • Patent number: 8652849
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: February 18, 2014
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Patent number: 8383782
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: February 26, 2013
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Patent number: 8367809
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: February 5, 2013
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Patent number: 8313651
    Abstract: The present invention discloses a membrane stack comprising a first and second membrane layers, and a spacer layer disposed between said first and second membrane layers, said membrane stack configured such that fluid passes through said membrane stack in a direction substantially perpendicular to the plane of said membrane layers and said spacer layer. The application also discloses a module comprising a membrane as described above, said module having a fluid flow path that is substantially perpendicular to the plane of the major surface of the membrane and spacer layers ins aid membrane stack.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: November 20, 2012
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Elena N. Komkova, Donna Lisa Crossley, Alicja M. Mika
  • Patent number: 8211682
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: July 3, 2012
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Patent number: 8206958
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: June 26, 2012
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Tapan K. Dey, Carlos Filipe, Raja Ghosh, Marcus Y. Kim, Elena N. Komkova, Alicja M. Mika, Jinsheng Zhou
  • Patent number: 8206982
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: June 26, 2012
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Patent number: 8192971
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: June 5, 2012
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Patent number: 8187880
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: May 29, 2012
    Assignee: Natrix Separations, Inc.
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Patent number: 8182694
    Abstract: The present application discloses a membrane stack comprising a first and second membrane layers, and a spacer layer disposed between said first and second membrane layers, said membrane stack configured such that fluid passes through said membrane stack in a direction substantially perpendicular to the plane of said membrane layers and said spacer layer. The application also discloses a module comprising a membrane as described above, said module having a fluid flow path that is substantially perpendicular to the plane of the major surface of the membrane and spacer layers in said membrane stack.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: May 22, 2012
    Assignee: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Elena N. Komkova, Alicja M. Mika, Donna Lisa Crossley
  • Patent number: 8133840
    Abstract: This invention relates to a stable composite material comprising a support member that has a plurality of pores extending through the support member, and a macroporous crosslinked gel that is located in, and fills, the pores of the support member, in which crosslinked gel is entrapped a stabilizing polymer, which stabilizing polymer is neutral, linear or branched, non-crosslinked, and substantially water-insoluble. The presence of the stabilizing polymer is such that it allows the composite material to largely retain its porosity and morphology after being dried. The invention also relates to a process for preparing the stable composite material described above, and to its use. The stable composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: March 13, 2012
    Assignee: Natrix Separations Inc.
    Inventors: Alicja M. Mika, Maggie Sanju Wang, Ronald F. Childs
  • Publication number: 20110253616
    Abstract: The present invention discloses a membrane stack comprising a first and second membrane layers, and a spacer layer disposed between said first and second membrane layers, said membrane stack configured such that fluid passes through said membrane stack in a direction substantially perpendicular to the plane of said membrane layers and said spacer layer. The application also discloses a module comprising a membrane as described above, said module having a fluid flow path that is substantially perpendicular to the plane of the major surface of the membrane and spacer layers ins aid membrane stack.
    Type: Application
    Filed: June 27, 2011
    Publication date: October 20, 2011
    Applicant: Natrix Separations Inc.
    Inventors: Ronald F. Childs, Elena N. Komkova, Lisa Crossley, Alicja M. Mika
  • Patent number: 7883767
    Abstract: A composite material comprising a support member that has a plurality of pores extending therethrough, a first polymer which durably coats the pores of the support member, the first polymer layer having both hydrophobic and hydrophilic properties, and a second polymer layer disposed on the surface of the first polymer layer, the second polymer being more hydrophilic than the first polymer layer. A process for preparing the composite material, and its use as a separation medium.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: February 8, 2011
    Assignee: McMaster University
    Inventors: Ronald F. Childs, Tapan K. Dey, Elena N. Komkova
  • Publication number: 20100044316
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Application
    Filed: October 30, 2009
    Publication date: February 25, 2010
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Publication number: 20100047551
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Application
    Filed: October 30, 2009
    Publication date: February 25, 2010
    Inventors: Ronald F. Childs, Carlos Filipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Patent number: 7604746
    Abstract: The present application discloses a composite membrane comprising (a) a support member that has a plurality of pores extending through the support member and (b) a cross-linked copolymer comprising (i) a cationic monomer and an anionic monomer and/or (ii) a zwitterionic monomer, which cross-linked copolymer fills the pores of the support member, the cross-linked copolymer having a permeability for a fluid that is dependent on the polarity of the fluid, wherein the permeability increases with increasing polarity. The present application also discloses a process for the preparation of the composite membrane, a pervaporation apparatus comprising the composite membrane, and methods for the use of the composite material in separation and dehydration processes.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: October 20, 2009
    Assignee: McMaster University
    Inventors: Ronald F. Childs, Jie Yu
  • Publication number: 20090176052
    Abstract: Disclosed is a composite material comprising a support member that has a plurality of pores extending therethrough, which pores are durably filled or coated with a non crosslinked gel polymer. Also disclosed is a process for the preparation of the composite material, use of the composite material as a separation medium, and a filtering apparatus comprising the composite material.
    Type: Application
    Filed: August 12, 2005
    Publication date: July 9, 2009
    Applicant: McMaster University
    Inventors: Ronald F. Childs, Elena N. Komkova, Jinsheng Zhou, Alicja M. Mika, Tapan K. Dey
  • Publication number: 20090032463
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Application
    Filed: October 14, 2008
    Publication date: February 5, 2009
    Inventors: Ronald F. Childs, Carlos Felipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey
  • Publication number: 20090035552
    Abstract: This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked gel. The invention also relates to a process for preparing the composite material described above, and to its use. The composite material is suitable, for example, for separation of substances, for example by filtration or adsorption, including chromatography, for use as a support in synthesis or for use as a support for cell growth.
    Type: Application
    Filed: October 14, 2008
    Publication date: February 5, 2009
    Inventors: Ronald F. Childs, Carlos Felipe, Raja Ghosh, Alicja M. Mika, Jinsheng Zhou, Elena N. Komkova, Marcus Y. Kim, Tapan K. Dey