Patents by Inventor Randall Henry Buchwald

Randall Henry Buchwald 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).

  • Magnetic resonance imaging compatible switched mode power supply
    Patent number: 8829905
    Abstract: A switched mode power supply (SMPS) employs only energy storage components that are devoid of ferromagnetic materials. The SMPS operates only at switching frequencies such that any potential electromagnetic interference of interest is generated at frequencies appearing only outside the imaging bandwidth of a corresponding magnetic resonance imaging system powered by the SMPS.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: September 9, 2014
    Assignee: General Electric Company
    Inventors: Juan Manuel Rivas Davila, Randall Henry Buchwald
  • Power supply with a piezoelectric transformer and method for power conversion
    Patent number: 8659921
    Abstract: A power supply with a piezoelectric transformer is provided. A method for power conversion is also provided. The power supply includes a piezoelectric transformer and an oscillator circuit connected to the piezoelectric transformer. The oscillator circuit controls a sinusoidal voltage waveform at an input of the piezoelectric transformer to drive the piezoelectric transformer.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: February 25, 2014
    Assignee: General Electric Company
    Inventors: Randall Henry Buchwald, David Lyle
  • MAGNETIC RESONANCE IMAGING COMPATIBLE SWITCHED MODE POWER SUPPLY
    Publication number: 20110291657
    Abstract: A switched mode power supply (SMPS) employs only energy storage components that are devoid of ferromagnetic materials. The SMPS operates only at switching frequencies such that any potential electromagnetic interference of interest is generated at frequencies appearing only outside the imaging bandwidth of a corresponding magnetic resonance imaging system powered by the SMPS.
    Type: Application
    Filed: May 25, 2010
    Publication date: December 1, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Juan Manuel Rivas Davila, Randall Henry Buchwald
  • POWER SUPPLY WITH A PIEZOELECTRIC TRANSFORMER AND METHOD FOR POWER CONVERSION
    Publication number: 20110051461
    Abstract: A power supply with a piezoelectric transformer is provided. A method for power conversion is also provided. The power supply includes a piezoelectric transformer and an oscillator circuit connected to the piezoelectric transformer. The oscillator circuit controls a sinusoidal voltage waveform at an input of the piezoelectric transformer to drive the piezoelectric transformer.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 3, 2011
    Inventors: Randall Henry Buchwald, David Lyle
  • System and methods for testing operation of a radio frequency device
    Patent number: 7173423
    Abstract: A system and a method for testing a Radio Frequency (RF) device are provided. The system includes a light emitting source configured to transmit an optical test signal based on an RF signal and a detector provided as a part of the RF device and configured to detect the transmitted optical test signal.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: February 6, 2007
    Assignee: General Electric Company
    Inventors: Randall Henry Buchwald, Ceylan Celil Guelu
  • Method and system for improving transient noise detection
    Patent number: 6788063
    Abstract: A transient noise detection system includes an imaging system having a magnetic field coil and an imaging bore. The imaging system generates an imaging signal through a signal cable, wherein the imaging signal is corruptible by a noise event. A noise event detector is positioned outside of the imaging bore and proximate to the signal cable. This detector detects the noise event from the signal cable and generates a noise signal therefrom.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: September 7, 2004
    Assignee: GE Medical Systems Technology Company, LLC
    Inventors: William Todd Peterson, Michael Edward Denzin, Randall Henry Buchwald
  • A METHOD AND SYSTEM FOR IMPROVING TRANSIENT NOISE DETECTION
    Publication number: 20040164739
    Abstract: A transient noise detection system includes an imaging system having a magnetic field coil and an imaging bore. The imaging system generates an imaging signal through a signal cable, wherein the imaging signal is corruptible by a noise event. A noise event detector is positioned outside of the imaging bore and proximate to the signal cable. This detector detects the noise event from the signal cable and generates a noise signal therefrom.
    Type: Application
    Filed: February 26, 2003
    Publication date: August 26, 2004
    Inventors: William Todd Peterson, Michael Edward Denzin, Randall Henry Buchwald