Patents by Inventor Sukjay Chey

Sukjay Chey 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: 20220044145
    Abstract: Techniques for performing improved machine learning using decision trees are disclosed. In one example, a system includes a plurality of decision tree structures, and configuration logic operatively coupled to the plurality of decision tree structures. The configuration logic selectively configures the plurality of decision tree structures to form at least one of: one or more combined decision tree structures, wherein a combined decision tree structure comprises multiple interconnected ones of the plurality of decision tree structures; and one or more individual decision tree structures, wherein an individual decision tree structure comprises a single one of the plurality of decision tree structures.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 10, 2022
    Inventors: Mingu Kang, Seonghoon Woo, Eun Kyung Lee, Sukjay Chey
  • Publication number: 20180358321
    Abstract: A method of pressing solder bumps using a pressing apparatus before testing a wafer, including loading the wafer into the pressing apparatus, where the wafer includes a number of chips, and the wafer is aligned with respect to a test head of the pressing apparatus. The test head includes a substrate which has pressing structures arranged across a surface of the substrate facing the wafer. The pressing structures contact the solder bumps, where the solder bumps include a first surface topology and the pressing structures include a pressing surface topology prior to the contact. The caused contact includes altering a shape of each of the plurality of solder bumps, such that the plurality of solder bumps then a second surface topology after the caused contact, and the second surface topology of the solder bumps matches the pressing surface topology after the caused contact.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 13, 2018
    Inventors: David M. Audette, Sukjay Chey, Dennis R. Conti, Marc D. Knox, Sankeerth Rajalingam, Cedric Speltz, Grant Wagner
  • Publication number: 20180358323
    Abstract: A method of pressing solder bumps using a pressing apparatus before testing a wafer, including loading the wafer into the pressing apparatus, where the wafer includes a number of chips, and the wafer is aligned with respect to a test head of the pressing apparatus. The test head includes a substrate which has pressing structures arranged across a surface of the substrate facing the wafer. The pressing structures contact the solder bumps, where the solder bumps include a first surface topology and the pressing structures include a pressing surface topology prior to the contact. The caused contact includes altering a shape of each of the plurality of solder bumps, such that the plurality of solder bumps then a second surface topology after the caused contact, and the second surface topology of the solder bumps matches the pressing surface topology after the caused contact.
    Type: Application
    Filed: December 21, 2017
    Publication date: December 13, 2018
    Inventors: David M. Audette, Sukjay Chey, Dennis R. Conti, Marc D. Knox, Sankeerth Rajalingam, Cedric Speltz, Grant Wagner
  • Publication number: 20180358322
    Abstract: A method of pressing solder bumps using a pressing apparatus before testing a wafer, including loading the wafer into the pressing apparatus, where the wafer includes a number of chips, and the wafer is aligned with respect to a test head of the pressing apparatus. The test head includes a substrate which has pressing structures arranged across a surface of the substrate facing the wafer. The pressing structures contact the solder bumps, where the solder bumps include a first surface topology and the pressing structures include a pressing surface topology prior to the contact. The caused contact includes altering a shape of each of the plurality of solder bumps, such that the plurality of solder bumps then a second surface topology after the caused contact, and the second surface topology of the solder bumps matches the pressing surface topology after the caused contact.
    Type: Application
    Filed: December 19, 2017
    Publication date: December 13, 2018
    Inventors: David M. Audette, Sukjay Chey, Dennis R. Conti, Marc D. Knox, Sankeerth Rajalingam, Cedric Speltz, Grant Wagner
  • Patent number: 8871560
    Abstract: Embodiments relate to a method for annealing a solar cell structure including forming an absorber layer on a molybdenum (Mo) layer of a solar cell base structure. The solar cell base structure includes a substrate and the Mo layer is located on the substrate. The absorber layer includes a semiconductor chalcogenide material. Annealing the solar cell base structure is performed by exposing an outer layer of the solar cell base structure to a plasma.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: October 28, 2014
    Assignee: International Business Machines Corporation
    Inventors: Shafaat Ahmed, Sukjay Chey, Hariklia Deligianni, Lubomyr T. Romankiw
  • Publication number: 20140045295
    Abstract: Embodiments relate to a method for annealing a solar cell structure including forming an absorber layer on a molybdenum (Mo) layer of a solar cell base structure. The solar cell base structure includes a substrate and the Mo layer is located on the substrate. The absorber layer includes a semiconductor chalcogenide material. Annealing the solar cell base structure is performed by exposing an outer layer of the solar cell base structure to a plasma.
    Type: Application
    Filed: August 9, 2012
    Publication date: February 13, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Shafaat Ahmed, Sukjay Chey, Hariklia Deligianni, Lubomyr T. Romankiw