Patents by Inventor Faith T. Lipford

Faith T. Lipford 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).

  • Component addition polymerization
    Patent number: 11345763
    Abstract: Provided is a process of making a collection of polymeric beads, wherein the beads comprise (i) 75 to 99% by weight, based on the weight of the bead, polymerized units of monofunctional vinyl monomer, and (ii) 1 to 25% by weight, based on the weight of the bead, polymerized units of multifunctional vinyl monomer; wherein the process comprises (a) providing an aqueous suspension of monomer droplets comprising initiator, monofunctional vinyl monomer, and multifunctional vinyl monomer; (b) initiating polymerization of the monomer in the monomer droplets; (c) while the polymerization of the monomer in the monomer droplets is occurring, adding a monomer feed solution to the suspension.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: May 31, 2022
    Assignees: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC, DDP SPECIALTY ELECTRONIC MATERIALS US 8, LLC
    Inventors: Andrew M. Savo, Faith T. Lipford, Thomas Jones, Michael Ostrander
  • COMPONENT ADDITION POLYMERIZATION
    Publication number: 20210371550
    Abstract: Provided is a process of making a collection of polymeric beads, wherein the beads comprise (i) 75 to 99% by weight, based on the weight of the bead, polymerized units of monofunctional vinyl monomer, and (ii) 1 to 25% by weight, based on the weight of the bead, polymerized units of multifunctional vinyl monomer; wherein the process comprises (a) providing an aqueous suspension of monomer droplets comprising initiator, monofunctional vinyl monomer, and multifunctional vinyl monomer; (b) initiating polymerization of the monomer in the monomer droplets; (c) while the polymerization of the monomer in the monomer droplets is occurring, adding a monomer feed solution to the suspension
    Type: Application
    Filed: October 24, 2018
    Publication date: December 2, 2021
    Inventors: Andrew M. Savo, Faith T. Lipford, Thomas Jones, Michael Ostrander