Patents by Inventor Masashi Niimura

Masashi Niimura 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: 11726895
    Abstract: A semiconductor device capable of monitoring a connection state of a terminal on a semiconductor chip includes a selector configured to acquire terminal levels of a plurality of respective terminals on the semiconductor chip to which an inspection pattern is inputted based on a detection signal, a memory configured to store latch data based on a chip address which identifies the semiconductor chip and a plurality of the terminal levels corresponding to the plurality of terminals based on the detection signal, an output circuit configured to read a plurality of pieces of latch data from the memory based on the detection signal and to output the plurality of pieces of latch data, and a timing control circuit configured to generate the detection signal by detecting an edge of a clock inputted during an inspection mode and configured to activate the selector, the memory, and the output circuit.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: August 15, 2023
    Assignee: Kioxia Corporation
    Inventors: Masashi Niimura, Kenshi Fukuda
  • Publication number: 20230089367
    Abstract: A contact probe includes a first plunger, a contact terminal, and a conductive member. The first plunger is contactable with one of an electrode of a semiconductor device and a pad of a test jig. The contact terminal is contactable with the other of the electrode of the semiconductor device and the pad of the test jig. The conductive member covers a part of the first plunger. The conductive member and the first plunger are provided to bring an end portion of the first plunger and the contact terminal into a conduction state when the end portion of the first plunger is pressed by a force smaller than a predetermined force, and bring the end portion of the first plunger and the contact terminal into a nonconduction state when the end portion of the first plunger is pressed by a force equal to or larger than the predetermined force.
    Type: Application
    Filed: March 1, 2022
    Publication date: March 23, 2023
    Applicant: Kioxia Corporation
    Inventors: Masashi NIIMURA, Mitsuhiro OHYA
  • Publication number: 20220318121
    Abstract: A semiconductor device capable of monitoring a connection state of a terminal on a semiconductor chip includes a selector configured to acquire terminal levels of a plurality of respective terminals on the semiconductor chip to which an inspection pattern is inputted based on a detection signal, a memory configured to store latch data based on a chip address which identifies the semiconductor chip and a plurality of the terminal levels corresponding to the plurality of terminals based on the detection signal, an output circuit configured to read a plurality of pieces of latch data from the memory based on the detection signal and to output the plurality of pieces of latch data, and a timing control circuit configured to generate the detection signal by detecting an edge of a clock inputted during an inspection mode and configured to activate the selector, the memory, and the output circuit.
    Type: Application
    Filed: June 17, 2022
    Publication date: October 6, 2022
    Applicant: Kioxia Corporation
    Inventors: Masashi NIIMURA, Kenshi FUKUDA
  • Patent number: 11392478
    Abstract: A semiconductor device capable of monitoring a connection state of a terminal on a semiconductor chip includes a selector configured to acquire terminal levels of a plurality of respective terminals on the semiconductor chip to which an inspection pattern is inputted based on a detection signal, a memory configured to store latch data based on a chip address which identifies the semiconductor chip and a plurality of the terminal levels corresponding to the plurality of terminals based on the detection signal, an output circuit configured to read a plurality of pieces of latch data from the memory based on the detection signal and to output the plurality of pieces of latch data, and a timing control circuit configured to generate the detection signal by detecting an edge of a clock inputted during an inspection mode and configured to activate the selector, the memory, and the output circuit.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: July 19, 2022
    Assignee: Kioxia Corporation
    Inventors: Masashi Niimura, Kenshi Fukuda
  • Publication number: 20210073101
    Abstract: A semiconductor device capable of monitoring a connection state of a terminal on a semiconductor chip includes a selector configured to acquire terminal levels of a plurality of respective terminals on the semiconductor chip to which an inspection pattern is inputted based on a detection signal, a memory configured to store latch data based on a chip address which identifies the semiconductor chip and a plurality of the terminal levels corresponding to the plurality of terminals based on the detection signal, an output circuit configured to read a plurality of pieces of latch data from the memory based on the detection signal and to output the plurality of pieces of latch data, and a timing control circuit configured to generate the detection signal by detecting an edge of a clock inputted during an inspection mode and configured to activate the selector, the memory, and the output circuit.
    Type: Application
    Filed: March 3, 2020
    Publication date: March 11, 2021
    Applicant: Kioxia Corporation
    Inventors: Masashi Niimura, Kenshi Fukuda
  • Patent number: D504935
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: May 10, 2005
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Masahiko Taneike, Atsuko Nishi, Koji Oobori, Masashi Niimura
  • Patent number: D754828
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: April 26, 2016
    Assignee: MITSUBISHI RAYON CO., LTD
    Inventors: Masashi Niimura, Hideyuki Terui