Patents by Inventor Steven Ashworth McDonald

Steven Ashworth McDonald 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: 9231223
    Abstract: The present invention provides of a three-dimensional bicontinuous heterostructure, a method of producing same, and the application of this structure towards the realization of photodetecting and photovoltaic devices working in the visible and the near-infrared. The three-dimensional bicontinuous heterostructure includes two interpenetrating layers which are spatially continuous, they are include only protrusions or peninsulas, and no islands. The method of producing the three-dimensional biocontinuous heterostructure relies on forming an essentially planar continuous bottom layer of a first material; forming a layer of this first material on top of the bottom layer which is textured to produce protrusions for subsequent interpenetration with a second material, coating this second material onto this structure; and forming a final coating with the second material that ensures that only the second material is contacted by subsequent layer.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: January 5, 2016
    Assignee: InVisage Technologies, Inc.
    Inventors: Edward Sargent, Steven Ashworth McDonald, Shiguo Zhang, Larissa Levina, Gerasimos Konstantatos, Paul Cyr
  • Publication number: 20130244366
    Abstract: The present invention provides of a three-dimensional bicontinuous heterostructure, a method of producing same, and the application of this structure towards the realization of photodetecting and photovoltaic devices working in the visible and the near-infrared. The three-dimensional bicontinuous heterostructure includes two interpenetrating layers which are spatially continuous, they are include only protrusions or peninsulas, and no islands. The method of producing the three-dimensional biocontinuous heterostructure relies on forming an essentially planar continuous bottom layer of a first material; forming a layer of this first material on top of the bottom layer which is textured to produce protrusions for subsequent interpenetration with a second material, coating this second material onto this structure; and forming a final coating with the second material that ensures that only the second material is contacted by subsequent layer.
    Type: Application
    Filed: May 6, 2013
    Publication date: September 19, 2013
    Applicant: InVisage Technologies, Inc.
    Inventors: Edward Sargent, Steven Ashworth McDonald, Shiguo Zhang, Larissa Levina, Gerasimos Konstantatos, Paul Cyr
  • Patent number: 8450138
    Abstract: Provided herein are embodiments of a three-dimensional bicontinuous heterostructure, a method of producing same, and the application of this structure. The three-dimensional bicontinuous heterostructure includes two interpenetrating layers which are spatially continuous, include only protrusions or peninsulas, and have no islands. The method of producing the three-dimensional bicontinuous heterostructure includes forming an essentially planar continuous bottom layer of a first material; forming a layer of this first material on top of the bottom layer that is textured to produce protrusions for subsequent interpenetration with a second material, coating this second material onto this structure, and forming a coating with the second material that ensures that only the second material is contacted by subsequent layer. One of the materials includes visible and/or infrared-absorbing semiconducting quantum dot nanoparticles, and one of materials is a hole conductor and the other is an electron conductor.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: May 28, 2013
    Assignee: InVisage Technologies, Inc.
    Inventors: Edward Sargent, Steven Ashworth McDonald, Shiguo Zhang, Larissa Levina, Gerasimos Konstantatos, Paul Cyr