Patents by Inventor Geza Dezsi

Geza Dezsi 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: 12224218
    Abstract: Semiconductor packages and, more particularly, semiconductor packages with increased power handling capabilities are disclosed. Semiconductor packages may include lead frame structures and corresponding housings that incorporate semiconductor die. To promote increased current and voltage capabilities, exemplary semiconductor packages include one or more arrangements of creepage extension structures, lead frame structures that may include integral thermal pads, additional thermal elements, and combinations thereof. Creepage extension structures may be arranged as part of top sides of semiconductor packages along with thermal pads of lead frame structures and additional thermal elements. Creepage extension structures may also be arranged as part of top sides and along on one or more peripheral edges of semiconductor packages to promote further increases in power handling.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: February 11, 2025
    Assignee: WOLFSPEED, INC.
    Inventors: Geza Dezsi, Devarajan Balaraman, Brice McPherson
  • Publication number: 20240312866
    Abstract: Example superlattice structures and methods for thermoelectric devices are provided. An example structure may include a plurality of superlattice periods. Each superlattice period may include a first material layer disposed adjacent to a second material layer. For each superlattice period, the first material layer may be formed of a first material and the second material layer may be formed of a second material. The plurality of superlattice periods may include a first superlattice period and a second superlattice period. A thickness of a first material layer of the first superlattice period may be different than a thickness of a first material layer of the second superlattice period.
    Type: Application
    Filed: January 26, 2024
    Publication date: September 19, 2024
    Applicant: The Johns Hopkins University
    Inventors: Rama Venkatasubramanian, Jonathan M. Pierce, Geza Dezsi
  • Publication number: 20240312867
    Abstract: Example superlattice structures and methods for thermoelectric devices are provided. An example structure may include a plurality of superlattice periods. Each superlattice period may include a first material layer disposed adjacent to a second material layer. For each superlattice period, the first material layer may be formed of a first material and the second material layer may be formed of a second material. The plurality of superlattice periods may include a first superlattice period and a second superlattice period. A thickness of a first material layer of the first superlattice period may be different than a thickness of a first material layer of the second superlattice period.
    Type: Application
    Filed: January 26, 2024
    Publication date: September 19, 2024
    Applicant: The Johns Hopkins University
    Inventors: Rama Venkatasubramanian, Jonathan M. Pierce, Geza Dezsi
  • Publication number: 20240304507
    Abstract: Power semiconductor packages are provided. In one example, a power semiconductor package may include a power semiconductor die. The power semiconductor package may include a housing having a first side and a second side opposing the first side. The power semiconductor package may include one or more electrical leads extending from the first side. The power semiconductor package may include one or more leadless surface mount type (SMT) connection structures on the second side.
    Type: Application
    Filed: March 6, 2023
    Publication date: September 12, 2024
    Inventors: Geza Dezsi, Yusheng Lin, Kuldeep Saxena
  • Patent number: 11908769
    Abstract: Example superlattice structures and methods for thermoelectric devices are provided. An example structure may include a plurality of superlattice periods. Each superlattice period may include a first material layer disposed adjacent to a second material layer. For each superlattice period, the first material layer may be formed of a first material and the second material layer may be formed of a second material. The plurality of superlattice periods may include a first superlattice period and a second superlattice period. A thickness of a first material layer of the first superlattice period may be different than a thickness of a first material layer of the second superlattice period.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: February 20, 2024
    Assignee: The Johns Hopkins University
    Inventors: Rama Venkatasubramanian, Jonathan M. Pierce, Geza Dezsi
  • Publication number: 20230378010
    Abstract: A power semiconductor device comprises a package, a power semiconductor die within the package, and a moisture barrier on an upper surface and side surfaces of an exterior of the package.
    Type: Application
    Filed: May 18, 2022
    Publication date: November 23, 2023
    Inventors: Dev Balaraman, Geza Dezsi, Daniel Richter
  • Publication number: 20230260861
    Abstract: Semiconductor packages and, more particularly, semiconductor packages with increased power handling capabilities are disclosed. Semiconductor packages may include lead frame structures and corresponding housings that incorporate semiconductor die. To promote increased current and voltage capabilities, exemplary semiconductor packages include one or more arrangements of creepage extension structures, lead frame structures that may include integral thermal pads, additional thermal elements, and combinations thereof. Creepage extension structures may be arranged as part of top sides of semiconductor packages along with thermal pads of lead frame structures and additional thermal elements. Creepage extension structures may also be arranged as part of top sides and along on one or more peripheral edges of semiconductor packages to promote further increases in power handling.
    Type: Application
    Filed: February 11, 2022
    Publication date: August 17, 2023
    Inventors: Geza Dezsi, Devarajan Balaraman, Brice McPherson
  • Patent number: 11289756
    Abstract: An apparatus includes an anode of a cell for a battery, a cathode of the cell, an anode thermoelectric device, and a cathode thermoelectric device. The anode thermoelectric device may be operably coupled to the anode of the cell, and the anode thermoelectric device may be connected in electrical series with the anode of the cell. The cathode thermoelectric device may be operably coupled to the cathode of the cell, and the cathode thermoelectric device being connected in electrical series with the cathode of the cell. The cathode thermoelectric device and the anode thermoelectric device may operate as a heat pump system configured to remove heat from the cathode and provide heat to the anode in response to the cell being discharged, and remove heat from the anode and provide heat to the cathode in response to the cell being charged.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 29, 2022
    Assignee: The Johns Hopkins University
    Inventors: Rama Venkatasubramanian, Geza Dezsi
  • Publication number: 20210151360
    Abstract: Example superlattice structures and methods for thermoelectric devices are provided. An example structure may include a plurality of superlattice periods. Each superlattice period may include a first material layer disposed adjacent to a second material layer. For each superlattice period, the first material layer may be formed of a first material and the second material layer may be formed of a second material. The plurality of superlattice periods may include a first superlattice period and a second superlattice period. A thickness of a first material layer of the first superlattice period may be different than a thickness of a first material layer of the second superlattice period.
    Type: Application
    Filed: December 23, 2020
    Publication date: May 20, 2021
    Inventors: Rama Venkatasubramanian, Jonathan M. Pierce, Geza Dezsi
  • Patent number: 10903139
    Abstract: Example superlattice structures and methods for thermoelectric devices are provided. An example structure may include a plurality of superlattice periods. Each superlattice period may include a first material layer disposed adjacent to a second material layer. For each superlattice period, the first material layer may be formed of a first material and the second material layer may be formed of a second material. The plurality of superlattice periods may include a first superlattice period and a second superlattice period. A thickness of a first material layer of the first superlattice period may be different than a thickness of a first material layer of the second superlattice period.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: January 26, 2021
    Assignee: The Johns Hopkins University
    Inventors: Rama Venkatasubramanian, Jonathan M. Pierce, Geza Dezsi
  • Patent number: 10734565
    Abstract: An electric generator device is provided that includes a thermoelectric array, a base plate, and an electric power output. The thermoelectric array may include a hot side portion and a cold side portion. The base plate may be configured to receive heat from a heat source to be transferred to the hot side portion of the thermoelectric array. The electric power output may be electrically coupled to the thermoelectric array. The thermoelectric array may be configured to convert a temperature differential into an electric voltage for output to the electric power output. The power generation housing may be configured to hold a heat rejection substance that absorbs heat from the cold side portion of the thermoelectric array to facilitate generation of the temperature differential between the hot side portion and the cold side portion of the thermoelectric array.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: August 4, 2020
    Assignee: The Johns Hopkins University
    Inventors: Jonathan M. Pierce, Rama Venkatasubramanian, Geza Dezsi, Drew P. Seker, Craig B. Leese
  • Publication number: 20190356030
    Abstract: An apparatus includes an anode of a cell for a battery, a cathode of the cell, an anode thermoelectric device, and a cathode thermoelectric device. The anode thermoelectric device may be operably coupled to the anode of the cell, and the anode thermoelectric device may be connected in electrical series with the anode of the cell. The cathode thermoelectric device may be operably coupled to the cathode of the cell, and the cathode thermoelectric device being connected in electrical series with the cathode of the cell. The cathode thermoelectric device and the anode thermoelectric device may operate as a heat pump system configured to remove heat from the cathode and provide heat to the anode in response to the cell being discharged, and remove heat from the anode and provide heat to the cathode in response to the cell being charged.
    Type: Application
    Filed: May 16, 2019
    Publication date: November 21, 2019
    Inventors: Rama Venkatasubramanian, Geza Dezsi
  • Publication number: 20180248101
    Abstract: An electric generator device is provided that includes a thermoelectric array, a base plate, and an electric power output. The thermoelectric array may include a hot side portion and a cold side portion. The base plate may be configured to receive heat from a heat source to be transferred to the hot side portion of the thermoelectric array. The electric power output may be electrically coupled to the thermoelectric array. The thermoelectric array may be configured to convert a temperature differential into an electric voltage for output to the electric power output. The power generation housing may be configured to hold a heat rejection substance that absorbs heat from the cold side portion of the thermoelectric array to facilitate generation of the temperature differential between the hot side portion and the cold side portion of the thermoelectric array.
    Type: Application
    Filed: December 22, 2017
    Publication date: August 30, 2018
    Inventors: Jonathan M. Pierce, Rama Venkatasubramanian, Geza Dezsi, Drew P. Seker, Craig B. Leese
  • Publication number: 20180138106
    Abstract: Example superlattice structures and methods for thermoelectric devices are provided. An example structure may include a plurality of superlattice periods. Each superlattice period may include a first material layer disposed adjacent to a second material layer. For each superlattice period, the first material layer may be formed of a first material and the second material layer may be formed of a second material. The plurality of superlattice periods may include a first superlattice period and a second superlattice period. A thickness of a first material layer of the first superlattice period may be different than a thickness of a first material layer of the second superlattice period.
    Type: Application
    Filed: September 11, 2017
    Publication date: May 17, 2018
    Inventors: Rama Venkatasubramanian, Jonathan M. Pierce, Geza Dezsi
  • Patent number: D1056862
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: January 7, 2025
    Assignee: Wolfspeed, Inc.
    Inventors: Geza Dezsi, Devarajan Balaraman, Brice McPherson