Patents by Inventor Richard Rojas-Delgado

Richard Rojas-Delgado 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).

  • Graphene-on-semiconductor substrates for analog electronics
    Patent number: 9324804
    Abstract: Electrically conductive material structures, analog electronic devices incorporating the structures and methods for making the structures are provided. The structures include a layer of graphene on a semiconductor substrate. The graphene layer and the substrate are separated by an interfacial region that promotes transfer of charge carriers from the surface of the substrate to the graphene.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: April 26, 2016
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Max G. Lagally, Francesca Cavallo, Richard Rojas-Delgado
  • GRAPHENE-ON-SEMICONDUCTOR SUBSTRATES FOR ANALOG ELECTRONICS
    Publication number: 20150270350
    Abstract: Electrically conductive material structures, analog electronic devices incorporating the structures and methods for making the structures are provided. The structures include a layer of graphene on a semiconductor substrate. The graphene layer and the substrate are separated by an interfacial region that promotes transfer of charge carriers from the surface of the substrate to the graphene.
    Type: Application
    Filed: March 21, 2014
    Publication date: September 24, 2015
    Inventors: Max G. Lagally, Francesca Cavallo, Richard Rojas-Delgado
  • Anisotropic conducting films for electromagnetic radiation applications
    Patent number: 9059335
    Abstract: Electronic devices for the generation of electromagnetic radiation are provided. Also provided are methods for using the devices to generate electromagnetic radiation. The radiation sources include an anisotropic electrically conducting thin film that is characterized by a periodically varying charge carrier mobility in the plane of the film. The periodic variation in carrier mobility gives rise to a spatially varying electric field, which produces electromagnetic radiation as charged particles pass through the film.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: June 16, 2015
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Francesca Cavallo, Max G. Lagally, Richard Rojas-Delgado
  • ANISOTROPIC CONDUCTING FILMS FOR ELECTROMAGNETIC RADIATION APPLICATIONS
    Publication number: 20140239201
    Abstract: Electronic devices for the generation of electromagnetic radiation are provided. Also provided are methods for using the devices to generate electromagnetic radiation. The radiation sources include an anisotropic electrically conducting thin film that is characterized by a periodically varying charge carrier mobility in the plane of the film. The periodic variation in carrier mobility gives rise to a spatially varying electric field, which produces electromagnetic radiation as charged particles pass through the film.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: Wisconsin Alumni Research Foundation
    Inventors: Francesca Cavallo, Max G. Lagally, Richard Rojas-Delgado