Patents by Inventor Sajad Yazdani

Sajad Yazdani 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: 20250112075
    Abstract: Embodiments of the present disclosure herein include an apparatus for processing a substrate. More specifically, embodiments of this disclosure provide a substrate support assembly that includes an electrostatic chuck (ESC) assembly. The ESC assembly comprises a cooling base having a top surface and an outer diameter sidewall, an ESC having a substrate support surface, a bottom surface and an outer diameter sidewall, the bottom surface of the ESC coupled to the top surface of the cooling base by a metal bond layer. The substrate support assembly includes a blocking ring disposed around the metal bond layer.
    Type: Application
    Filed: September 29, 2023
    Publication date: April 3, 2025
    Inventors: Alexander SULYMAN, Timothy Joseph FRANKLIN, Jaeyong CHO, Joseph F. SOMMERS, Joseph F. BEHNKE, Sajad YAZDANI, Xue CHANG, Kartik RAMASWAMY, Tomoaki KOHZU, Kyounghwan NA
  • Publication number: 20250096703
    Abstract: Embodiments of electrostatic chucks (ESCs) are provided herein. In some embodiments, an electrostatic chuck includes: a dielectric plate having an upper surface and a plurality of mesas extending from the upper surface to a first height to at least partially define a support surface for the substrate; four backside gas cooling zones disposed in the dielectric plate; four gas channels disposed in the dielectric plate and corresponding to the four backside gas cooling zones, wherein the four gas channels are fluidly independent within the dielectric plate and extend from a lower surface of the dielectric plate to a plurality of cooling gas outlets extending to the upper surface within each corresponding cooling zone; a plurality of seal rings extending from the upper surface of the dielectric plate to the first height and defining the four backside gas cooling zones; and one or more electrodes disposed in the dielectric plate.
    Type: Application
    Filed: July 30, 2024
    Publication date: March 20, 2025
    Inventors: Sajad YAZDANI, Jaeyong CHO, Alexander SULYMAN, Tomoaki KOHZU, Kyounghwan NA
  • Patent number: 11474060
    Abstract: A device for measuring a plurality of material properties includes a structure and sensors in the structure configured to sense at least thermal conductivity, electrical conductivity, and Seebeck coefficient for a single sample consecutively while maintaining a vacuum or inert gas environment. Embodiments can also measure ionic conductivity and/or surface temperatures. Embodiments can measure any suitable plurality of the above properties.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: October 18, 2022
    Assignee: UNIVERSITY OF CONNECTICUT
    Inventors: Michael T. Pettes, Hyun-Young Kim, Sajad Yazdani
  • Publication number: 20200182815
    Abstract: A device for measuring a plurality of material properties includes a structure and sensors in the structure configured to sense at least thermal conductivity, electrical conductivity, and Seebeck coefficient for a single sample consecutively while maintaining a vacuum or inert gas environment. Embodiments can also measure ionic conductivity and/or surface temperatures. Embodiments can measure any suitable plurality of the above properties.
    Type: Application
    Filed: September 4, 2018
    Publication date: June 11, 2020
    Applicant: University of Connecticut
    Inventors: Michael T. Pettes, Hyun-Yung Kim, Sajad Yazdani