Patents by Inventor John D. Cramer

John D. Cramer 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: 10888332
    Abstract: An intranasal occlusion device having an inflatable balloon within a sponge that is used to prevent drainage of fluid, such as blood and other fluids into the airway during sinus and nasal minor procedures or surgeries, and methods of using the device to occlude an intranasal cavity of a patient. The device provides for suction to remove the fluid and may facilitate office-based minor procedures or surgeries.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: January 12, 2021
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: John D. Cramer, Bruce Kuang-Huay Tan
  • Patent number: 10887015
    Abstract: A radio frequency (RF) photonic equalizer may include a first electro-optic (E/O) modulator configured to modulate an optical carrier based upon an RF input signal, a stimulated Brillouin scattering (SBS) medium coupled to the first E/O modulator, and a second E/O modulator configured to modulate the optical carrier based upon an equalizing function waveform. An optical circulator may be coupled to the SBS medium and the second E/O modulator, and a photodetector may be coupled to the optical circulator.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: January 5, 2021
    Assignee: EAGLE TECHNOLOGY, LLC
    Inventors: Charles F. Middleton, Anthony C. Klee, Elliott J. Grafer, John Richard Desalvo, Alexander D. Cramer
  • Patent number: 10511387
    Abstract: An RF frequency converter with equalization may include a first E/O modulator configured to modulate an optical carrier signal based upon an RF input signal having a first frequency, and a SBS medium coupled to the first E/O modulator. The RF frequency converter may have a second E/O modulator configured to modulate the optical carrier signal based upon an equalizing function waveform, and a third E/O modulator coupled between the first E/O modulator and the SBS medium. The third E/O modulator may be configured to modulate the optical carrier signal with a reference signal. The RF frequency converter may include an optical circulator coupled to the SBS medium and the second E/O modulator, and a photodetector coupled to the optical circulator and configured to generate an equalized RF output signal having a replica of the RF input signal at a second frequency based upon the reference signal.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: December 17, 2019
    Assignee: EAGLE TECHNOLOGY, LLC
    Inventors: Charles F. Middleton, IV, John R. Desalvo, Elliott J. Grafer, Anthony C. Klee, Alexander D. Cramer, George W. Miles, IV
  • Publication number: 20190326990
    Abstract: A radio frequency (RF) photonic equalizer may include a first electro-optic (E/O) modulator configured to modulate an optical carrier based upon an RF input signal, a stimulated Brillouin scattering (SBS) medium coupled to the first E/O modulator, and a second E/O modulator configured to modulate the optical carrier based upon an equalizing function waveform. An optical circulator may be coupled to the SBS medium and the second E/O modulator, and a photodetector may be coupled to the optical circulator.
    Type: Application
    Filed: April 20, 2018
    Publication date: October 24, 2019
    Inventors: Charles F. Middleton, Anthony C. Klee, Elliott J. Grafer, John Richard Desalvo, Alexander D. Cramer
  • Publication number: 20170354420
    Abstract: An intranasal occlusion device having an inflatable balloon within a sponge that is used to prevent drainage of fluid, such as blood and other fluids into the airway during sinus and nasal minor procedures or surgeries, and methods of using the device to occlude an intranasal cavity of a patient. The device provides for suction to remove the fluid and may facilitate office-based minor procedures or surgeries.
    Type: Application
    Filed: June 9, 2017
    Publication date: December 14, 2017
    Inventors: John D. Cramer, Bruce Kuang-Huay Tan