Patents by Inventor William Sproull Graves

William Sproull Graves 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).

  • Coherent electron and radiation production using transverse spatial modulation and axial transfer
    Patent number: 9697924
    Abstract: Coherent electronic current is generated by generating and transmitting an electron bunch along a longitudinal axis. The electron bunch is then directed onto a target, wherein the target imparts a transverse spatial modulation to the electron bunch via diffraction contrast or phase contrast. The transverse spatial modulation of the electron bunch is then transferred to the longitudinal axis via an emittance exchange beamline, creating a periodically modulated distribution of coherent electronic current.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: July 4, 2017
    Assignee: Massachusetts Institute of Technology
    Inventors: Emilio Alessandro Nanni, William Sproull Graves, Franz Xaver Kaertner, David Eugene Moncton
  • Coherent Electron and Radiation Production Using Transverse Spatial Modulation and Axial Transfer
    Publication number: 20160307659
    Abstract: Coherent electronic current is generated by generating and transmitting an electron bunch along a longitudinal axis. The electron bunch is then directed onto a target, wherein the target imparts a transverse spatial modulation to the electron bunch via diffraction contrast or phase contrast. The transverse spatial modulation of the electron bunch is then transferred to the longitudinal axis via an emittance exchange beamline, creating a periodically modulated distribution of coherent electronic current.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 20, 2016
    Inventors: Emilio Alessandro Nanni, William Sproull Graves, Franz Xaver Kaertner, David Eugene Moncton
  • Compact X-Ray Source for CD-SAXS
    Publication number: 20150285749
    Abstract: The structure of materials can be characterized (e.g., via CD-SAXS) by generating a burst of electron bunches in a pulse train and accelerating the electron bunches to relativistic energies. Meanwhile, an optical cavity is filled with a laser pulse; and the electron bunches collide with the laser pulse in the optical cavity, permitting a single laser pulse to interact with the electron bunch train to generate x-rays via inverse Compton scattering. The generated x-rays are then directed to a sample, and the sample is imaged by measuring the scattering of the x-rays from the sample.
    Type: Application
    Filed: April 3, 2015
    Publication date: October 8, 2015
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: David Eugene Moncton, William Sproull Graves, Franz Xaver Kaertner, Hua Lin, Emilio Alessandro Nanni, Luis E. Zapata, Boris Khaykovich