Patents by Inventor Holly A. STRETZ

Holly A. STRETZ 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).

  • Patent number: 10449150
    Abstract: A fiber fluidic system may be used to produce particles (e.g., NPs and/or microparticles). The fiber fluidic system may include a cylinder with a plurality of elongated fibers oriented along a length of the cylinder. The cylinder may have a first opening at or near a first end of the cylinder and a second opening downstream of the first opening. A constrained phase fluid may be provided through the first opening and a free phase fluid may be provided through the second opening to produce particles (e.g., NPs and/or microparticles) through a second end of the cylinder. The fiber fluidic system may be used to continuously produce the particles at high throughput.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: October 22, 2019
    Assignee: Texas State University
    Inventors: Tania Betancourt, John L. Massingill, Jr., Holly Stretz
  • Publication number: 20170119670
    Abstract: A fiber fluidic system may be used to produce particles (e.g., NPs and/or microparticles). The fiber fluidic system may include a cylinder with a plurality of elongated fibers oriented along a length of the cylinder. The cylinder may have a first opening at or near a first end of the cylinder and a second opening downstream of the first opening. A constrained phase fluid may be provided through the first opening and a free phase fluid may be provided through the second opening to produce particles (e.g., NPs and/or microparticles) through a second end of the cylinder. The fiber fluidic system may be used to continuously produce the particles at high throughput.
    Type: Application
    Filed: May 20, 2014
    Publication date: May 4, 2017
    Inventors: Tania Betancourt, John L. Massingill, Jr., Holly Stretz
  • Publication number: 20150122652
    Abstract: Nanocomposite polymeric hydrogels comprising polyacrylamide (PAAm) formulated in combination with magnetically-susceptible anisotropic microparticles are described, as are method of making and using said hydrogels.
    Type: Application
    Filed: July 19, 2012
    Publication date: May 7, 2015
    Applicant: Tennessee Technological University
    Inventors: Jeffrey W. Thompson, Holly Stretz, Pedro E. Arce
  • Patent number: 8177950
    Abstract: Disclosed are thermoresponsive microparticle composite hydrogels comprising poly(N-isopropyl acrylamide) and polyacrylamide, and methods regarding their manufacture and their use. The present invention provides in one aspect a thermoresponsive microparticle hydrogel, wherein the matrix morphology is controllably and selectively altered by incorporation of thermoresponsive nano/micro-particles. The particles are preferably poly(N-isopropyl acrylamide) particles. The present invention also provides methods of making and using such hydrogels.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: May 15, 2012
    Assignee: Tennessee Technological University
    Inventors: Jeffery W. Thompson, Holly Stretz, Pedro E. Arce
  • Publication number: 20090127116
    Abstract: Disclosed are thermoresponsive microparticle composite hydrogels comprising poly(N-isopropyl acrylamide) and polyacrylamide, and methods regarding their manufacture and their use. The present invention provides in one aspect a thermoresponsive microparticle hydrogel, wherein the matrix morphology is controllably and selectively altered by incorporation of thermoresponsive nano/micro-particles. The particles are preferably poly(N-isopropyl acrylamide) particles. The present invention also provides methods of making and using such hydrogels.
    Type: Application
    Filed: November 21, 2008
    Publication date: May 21, 2009
    Applicant: TENNESSEE TECHNOLOGICAL UNIVERSITY
    Inventors: Jeffery Wayne THOMPSON, Holly A. STRETZ, Pedro E. Arce