Patents by Inventor James Prager

James Prager 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).

  • Publication number: 20150256086
    Abstract: A pulse generator is disclosed that includes at least the following stages a driver stage, a transformer stage, a rectifier stage, and an output stage. The driver stage may include at least one solid state switch such as, for example, of one or more IGBTs and/or one or more MOSFETs. The driver stage may also have a stray inductance less than 1,000 nH. The transformer stage may be coupled with the driver stage and/or with a balance stage and may include one or more transformers. The rectifier stage may be coupled with the transformer stage and may have a stray inductance less than 1,000 nH. The output stage may be coupled with the rectifier stage. The output stage may output a signal pulse with a voltage greater than 2 kilovolts and a frequency greater than 5 kHz. In some embodiments, the output stage may be galvanically isolated from a reference potential.
    Type: Application
    Filed: March 2, 2015
    Publication date: September 10, 2015
    Inventors: Kenneth E. Miller, Timothy Ziemba, Ilia Slobodov, John G. Carscadden, James Prager
  • Publication number: 20150076372
    Abstract: Systems and methods are discussed to create radiation from one or more compact toroids. Compact toroids can be created from plasma of gases within a confinement chamber using a plurality of coils of various densities of windings. High current pulses can be generated within the coil and switched at high frequencies to repeatedly generate compact toroids within the plasma. The plasma can produce radiation at various wavelengths that is focused toward a target or an intermediate focus.
    Type: Application
    Filed: August 15, 2014
    Publication date: March 19, 2015
    Inventors: Timothy Ziemba, Kenneth E. Miller, John G. Carscadden, James Prager, Angus Mcnab
  • Patent number: 8963377
    Abstract: Embodiments of the invention provide IGBT circuit modules with increased efficiencies. These efficiencies can be realized in a number of ways. In some embodiments, the gate resistance and/or voltage can be minimized. In some embodiments, the IGBT circuit module can be switched using an isolated receiver such as a fiber optic receiver. In some embodiments, a single driver can drive a single IGBT. And in some embodiments, a current bypass circuit can be included. Various other embodiments of the invention are disclosed.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: February 24, 2015
    Assignee: Eagle Harbor Technologies Inc.
    Inventors: Timothy Ziemba, Kenneth E. Miller, John G. Carscadden, James Prager
  • Publication number: 20150028932
    Abstract: Embodiments of the invention provide IGBT circuit modules with increased efficiencies. These efficiencies can be realized in a number of ways. In some embodiments, the gate resistance and/or voltage can be minimized. In some embodiments, the IGBT circuit module can be switched using an isolated receiver such as a fiber optic receiver. In some embodiments, a single driver can drive a single IGBT. And in some embodiments, a current bypass circuit can be included. Various other embodiments of the invention are disclosed.
    Type: Application
    Filed: October 13, 2014
    Publication date: January 29, 2015
    Inventors: Timothy Ziemba, Kenneth E. Miller, John G. Carscadden, James Prager
  • Publication number: 20140354343
    Abstract: Systems and methods are disclosed to integrate signals. Some embodiments include an integrator comprising an active input; a passive input; a first integrator having a first integrator input and a first integrator output; a second integrator having a second integrator input and a second integrator output; a first plurality of switches coupled with the first integrator input, the second integrator input, the active input, and the passive input; a second plurality of switches coupled with the first integrator output and the second integrator output; and a controller. The controller may be configured to control the operation of the first plurality of switches to switch the active input between the first integrator input and the second integrator input, and control the operation of the first plurality of switches to switch the passive input between the first integrator input and the second integrator input.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 4, 2014
    Inventors: Timothy Ziemba, Kenneth E. Miller, John G. Carscadden, James Prager, Ilia Slobodov, Daniel Edward Lotz
  • Publication number: 20130175575
    Abstract: Embodiments of the invention provide IGBT circuit modules with increased efficiencies. These efficiencies can be realized in a number of ways. In some embodiments, the gate resistance and/or voltage can be minimized. In some embodiments, the IGBT circuit module can be switched using an isolated receiver such as a fiber optic receiver. In some embodiments, a single driver can drive a single IGBT. And in some embodiments, a current bypass circuit can be included. Various other embodiments of the invention are disclosed.
    Type: Application
    Filed: January 9, 2012
    Publication date: July 11, 2013
    Applicant: Eagle Harbor Technologies, Inc.
    Inventors: Timothy Ziemba, Kenneth E. Miller, John G. Carscadden, James Prager