Patents by Inventor Amro Ragheb

Amro Ragheb 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: 20220410076
    Abstract: Disclosed are methods for coupling a ligand to a composite material. Covalent bonds are formed between functionalized composite materials and ligands as a ligand solution flows through or across the composite materials. The composite materials are useful as chromatographic separation media.
    Type: Application
    Filed: November 20, 2020
    Publication date: December 29, 2022
    Inventors: Matthew T. Stone, Santosh Rahane, Joaquin A. Umana, Gary Skarja, Elena N. Komkova, Melissa Vandersluis, Amro Ragheb
  • Publication number: 20220341664
    Abstract: Disclosed are methods for critical point drying a composite material. After exposing the composite material to a supercritical fluid, the composite material dries as the supercritical fluid evaporates with reduced pressure. The composite materials are useful as chromatographic separation media.
    Type: Application
    Filed: September 14, 2020
    Publication date: October 27, 2022
    Inventors: John Boyle, Gary Skarja, Amro Ragheb
  • Patent number: 11383229
    Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: July 12, 2022
    Assignee: Merck Millipore Ltd.
    Inventors: Amro Ragheb, Gary Skarja
  • Publication number: 20210060541
    Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.
    Type: Application
    Filed: November 11, 2020
    Publication date: March 4, 2021
    Inventors: Amro Ragheb, Gary Skarja
  • Patent number: 10864510
    Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: December 15, 2020
    Assignee: Merck Millipore Ltd.
    Inventors: Amro Ragheb, Gary Skarja
  • Publication number: 20200069602
    Abstract: Described are composite materials and methods of making and using them for the storage and delivery of unstable drugs or biologics. In certain embodiments, the composite material comprises a support member, comprising a plurality of pores extending through the support member; a macroporous cross-linked gel, comprising a plurality of macropores; a therapeutic agent; and a stabilizing agent.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 5, 2020
    Inventors: Charles H. Honeyman, John A. Chickosky, Molly S. McGlaughlin, Amro Ragheb
  • Publication number: 20200047175
    Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.
    Type: Application
    Filed: July 19, 2019
    Publication date: February 13, 2020
    Inventors: Amro Ragheb, Gary Skarja
  • Patent number: 10357766
    Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: July 23, 2019
    Assignee: Natrix Separations Inc.
    Inventors: Amro Ragheb, Gary Skarja
  • Publication number: 20180297023
    Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.
    Type: Application
    Filed: April 6, 2018
    Publication date: October 18, 2018
    Inventors: Amro Ragheb, Gary Skarja
  • Patent number: 9962691
    Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 8, 2018
    Assignee: Natrix Separations Inc.
    Inventors: Amro Ragheb, Gary Skarja
  • Publication number: 20160243538
    Abstract: Disclosed are composite materials and methods of making them. The composite materials comprise a support member and a cross-linked gel, wherein the cross-linked gel is a polymer synthesized by thiol-ene or thiol-yne polymerization and cross-linking. The cross-linked gel may be functionalized by a thiol-ene or thiol-yne grafting reaction, either simultaneously with the polymerization or as the second step in a two-step procedure. The composite materials are useful as chromatographic separation media.
    Type: Application
    Filed: February 22, 2016
    Publication date: August 25, 2016
    Inventors: Amro Ragheb, Gary Skarja
  • Publication number: 20140273158
    Abstract: Disclosed are composite materials and methods of using them for chromatography. The composite materials retain their performance characteristics, such as binding capacity, flux, or percent recovery, under caustic conditions (e.g., 1 M NaOH for 24 h). In certain embodiments, the composite materials or membranes comprise a support member, comprising a plurality of pores extending through the support member; and a cross-linked gel. Importantly, the cross-linker and the monomer do not contain backbone ester linkages. The composite materials may be used in the separation or purification of a biological molecule or biological ion.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: Natrix Separations Inc.
    Inventor: Amro Ragheb
  • Publication number: 20120064601
    Abstract: Described herein are composite materials and methods of using them for the separation or purification of enantiomers. In certain embodiments, the composite material comprises a support member, comprising a plurality of pores extending through the support member; and a macroporous cross-linked gel, comprising a plurality of macropores, and a plurality of pendant chiral moieties. In certain embodiments, the composite materials may be used in the separation or purification of a chiral small molecule.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 15, 2012
    Inventors: Elena N. Komkova, Amro Ragheb, Charles H. Honeyman