Patents by Inventor Stephen John Amon DeWitt

Stephen John Amon DeWitt 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).

  • Incorporation of microencapsulated phase change materials into wet-spin dry jet polymeric fibers
    Patent number: 11643584
    Abstract: A process for forming an extruded composition using a wet-spin dry-jet technique including forming a dispersion dope by mixing phase change material with a first portion of solvent, and sonicating the mixture, forming a prime dope by combining a first portion of polymer and a second portion of solvent, forming an extrusion composition by combining the dispersion dope, the prime dope and a second portion of the polymer, rolling the extrusion composition, degassing the extrusion composition, extruding the extrusion composition through a spinneret, drying the extruded composition, and quenching the extruded composition. The weight fraction of the phase change material in the extruded composition can be greater than approximately 60%, and preferably greater than approximately 75%.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: May 9, 2023
    Assignee: Georgia Tech Research Corporation
    Inventors: Stephen John Amon DeWitt, Ryan P. Lively, Héctor Octavio Rubiera Landa, Matthew J. Realff, Yoshiaki Kawajiri