Patents by Inventor James Hemmer

James Hemmer 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).

  • Elastomeric ionomers for additive manufacturing
    Patent number: 11299560
    Abstract: Disclosed is a method of: providing a solution having a solvent, a polybutadiene, and an acrylate; and functionalizing the polybutadiene with the diacrylate to produce an ionic polymer. The polymer may be useful as an additive manufacturing binder.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: April 12, 2022
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Riccardo Casalini, James Hemmer, Brian Mason
  • ELASTOMERIC IONOMERS FOR ADDITIVE MANUFACTURING
    Publication number: 20200247914
    Abstract: Disclosed is a method of: providing a solution having a solvent, a polybutadiene, and an acrylate; and functionalizing the polybutadiene with the diacrylate to produce an ionic polymer. The polymer may be useful as an additive manufacturing binder.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 6, 2020
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Riccardo Casalini, James Hemmer, Brian Mason
  • COLORIMETRIC SENSORS AND METHODS OF USING COLORIMETRIC SENSORS
    Publication number: 20200056999
    Abstract: Embodiments of the present disclosure describe a colorimetric sensor comprising a substrate including an activated furan and configured to undergo a color change upon detecting an amine. Embodiments of the present disclosure describe a method of using a colorimetric sensor comprising applying an activated furan to a substrate, providing the substrate to a medium, and detecting an amine in the medium via change in color of the substrate. Embodiments of the present disclosure further describe a method of detecting an amine comprising contacting furfural with a cyclic acceptor group to form an activated furan for detecting amines, and contacting the activated furan with an amine to produce a colored donor-acceptor Stenhouse adduct.
    Type: Application
    Filed: October 19, 2017
    Publication date: February 20, 2020
    Inventors: Javier Read de Alaniz, Craig Hawker, James Hemmer, Yvonne Diaz, Abigail S. Knight, Zachariah A. Page, Tal Margalith
  • NEGATIVE PHOTOCHROMIC MATERIALS WITH TUNABLE PROPERTIES
    Publication number: 20190127345
    Abstract: Embodiments of the present disclosure describe a negative photochromatic material. Embodiments of the present disclosure further describe a method of tuning a negative photochromatic material comprising selecting an amine donor group, selecting an acceptor group, and contacting at least the selected amine donor group and the selected acceptor group to form a negative photochromatic material, wherein one or more of the selected amine donor group and the selected acceptor group tune at least an absorption range of the negative photochromatic material.
    Type: Application
    Filed: April 26, 2017
    Publication date: May 2, 2019
    Applicant: The Regents of the University of California
    Inventors: Javier Read de Alaniz, James Hemmer, Zachariah A. Page, Saemi Oh Poelma, Nicolas J. Treat, Sameh Helmy