Patents by Inventor Zachary W. Dunbar

Zachary W. Dunbar 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).

  • Spectroscopic membrane permeation cell for simultaneous measurements of gas permeation rates and infrared reflection absorption spectroscopic analysis of membrane surfaces
    Patent number: 10663389
    Abstract: A permeation cell device includes a body component, a wire mesh support structure positioned in the body component, a membrane over the wire mesh support structure, a pair of compressible gaskets sandwiching the membrane, and a flange compressing the membrane. A spectroscopic device contains the permeation cell device. At least one mechanism simultaneously performs an infrared-reflection absorption spectroscopic analysis of a surface of the membrane as a fluid permeates on the membrane and measures a trans-membrane fluid permeation rate across the membrane. The wire mesh support structure may be configured to provide mechanical support to the non-opaque membrane at a pressure of at least 1 atm. The permeation cell device and the spectroscopic device may collectively create a pair of separate isolated compartments. The body component may include a material that is non-permeable to the fluid.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: May 26, 2020
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Casey P. O'Brien, Ivan C. Lee, Zachary W. Dunbar
  • SPECTROSCOPIC MEMBRANE PERMEATION CELL FOR SIMULTANEOUS MEASUREMENTS OF GAS PERMEATION RATES AND INFRARED REFLECTION ABSORPTION SPECTROSCOPIC ANALYSIS OF MEMBRANE SURFACES
    Publication number: 20190301992
    Abstract: A permeation cell device includes a body component, a wire mesh support structure positioned in the body component, a membrane over the wire mesh support structure, a pair of compressible gaskets sandwiching the membrane, and a flange compressing the membrane. A spectroscopic device contains the permeation cell device. At least one mechanism simultaneously performs an infrared-reflection absorption spectroscopic analysis of a surface of the membrane as a fluid permeates on the membrane and measures a trans-membrane fluid permeation rate across the membrane. The wire mesh support structure may be configured to provide mechanical support to the non-opaque membrane at a pressure of at least 1 atm. The permeation cell device and the spectroscopic device may collectively create a pair of separate isolated compartments. The body component may include a material that is non-permeable to the fluid.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 3, 2019
    Inventors: Casey O'Brien, Ivan C. Lee, Zachary W. Dunbar