Patents by Inventor James D. Scofield

James D. Scofield 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: 20230106783
    Abstract: The present invention relates high power flux cancelling current steering inductor without a gap and processes of making and using same. When properly configured and wired such inductors, separate the AC component and DC component of a high power current thus allowing the smaller AC fraction of the overall current to be carried by much smaller cross-sectional litz wires. Such high power flux cancelling current steering inductor without a gap are more efficient at avoiding core saturation compared to standard inductors, do not require core gaps, yet they are less expensive without the need for large cross-sectional litz AC carrying wires. In addition to the aforementioned benefits, such high power flux cancelling current steering inductor without a gap permits the levels of AC and DC current to be efficiently monitored as such currents are separated.
    Type: Application
    Filed: September 7, 2022
    Publication date: April 6, 2023
    Inventors: Tyler W Bixel, Hiroyuki Kosai, James D. Scofield
  • Publication number: 20230091263
    Abstract: The present invention relates high power AC steering flux cancelling inductors and processes of making and using same. When properly configured and wired such inductors, separate the AC component and DC component of a high power current thus allowing the smaller AC fraction of the overall current to be carried by much smaller cross-sectional litz wires. Such high power AC steering flux cancelling inductors are more efficient at avoiding core saturation compared to standard inductors, yet they are less expensive without the need for large cross-sectional litz AC carrying wires. In addition to the aforementioned benefits, such high power AC steering flux cancelling inductor permits the levels of AC and DC current to be efficiently monitored as such currents are separated.
    Type: Application
    Filed: September 7, 2022
    Publication date: March 23, 2023
    Inventors: Tyler W. Bixel, Hiroyuki Kosai, James D. Scofield
  • Publication number: 20230087883
    Abstract: The present invention relates high power AC steering flux cancelling inductors and processes of making and using same. When properly configured and wired such inductors, separate the AC component and DC component of a high power current thus allowing the smaller AC fraction of the overall current to be carried by much smaller cross-sectional litz wires. Such high power AC steering flux cancelling inductors are more efficient at avoiding core saturation compared to standard inductors, yet they are less expensive without the need for large cross-sectional litz AC carrying wires. In addition to the aforementioned benefits, such high power AC steering flux cancelling inductor permits the levels of AC and DC current to be efficiently monitored as such currents are separated.
    Type: Application
    Filed: September 7, 2022
    Publication date: March 23, 2023
    Inventors: Hiroyuki Kosai, James D. Scofield, Tyler W Bixel
  • Publication number: 20230090214
    Abstract: The present invention relates high power stacked flux cancelling inductors and processes of making and using same. When properly configured and wired, such inductors separate the AC component and DC component of a high power current thus allowing the smaller AC fraction of the overall current to be carried by much smaller cross-sectional litz wires. Such high power stacked flux cancelling inductors are more efficient at avoiding core saturation compared to standard inductors, yet they are less expensive without the need for large cross-sectional litz AC carrying wires. In addition to the aforementioned benefits, such high power stacked flux cancelling inductor permits the levels of AC and DC current to be efficiently monitored as such currents are separated.
    Type: Application
    Filed: September 7, 2022
    Publication date: March 23, 2023
    Inventors: Hiroyuki Kosai, James D. Scofield, Tyler W. Bixel
  • Patent number: 6406930
    Abstract: A visible light emitting device includes a wide band gap semiconductor layer doped with one or more elements which emit light at various wavelengths based upon atomic transitions. The semiconductor preferably is GaN, InN, AIN, BN or alloys thereof doped with a lanthanide element such as Er, Pr or Tm. The light emission can be enhanced by annealing the WBGS.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: June 18, 2002
    Assignee: University of Cincinnati
    Inventors: Ronald H. Birkhahn, Liang-Chiun Chao, Michael J. Garter, James D. Scofield, Andrew J. Steckl
  • Publication number: 20010015469
    Abstract: A visible light emitting device includes a wide band gap semiconductor layer doped with one or more elements which emit light at various wavelengths based upon atomic transitions. The semiconductor preferably is GaN, InN, AIN, BN or alloys thereof doped with a lanthanide element such as Er, Pr or Tm. The light emission can be enhanced by annealing the WBGS.
    Type: Application
    Filed: April 30, 2001
    Publication date: August 23, 2001
    Applicant: University of Cincinnati
    Inventors: Ronald H. Birkhahn, Liang-Chiun Chao, Michael J. Garter, James D. Scofield, Andrew J. Steckl
  • Patent number: 6255669
    Abstract: A visible light emitting device includes a wide band gap semiconductor layer doped with one or more elements which emit light at various wavelengths based upon atomic transitions. The semiconductor preferably is GaN, InN, AIN, BN or alloys thereof doped with a lanthanide element such as Er, Pr or Tm. The light emission can be enhanced by annealing the WBGS.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: July 3, 2001
    Assignee: The University of Cincinnati
    Inventors: Ronald H. Birkhahn, Liang-Chiun Chao, Michael J. Garter, James D. Scofield, Andrew J. Steckl