Patents by Inventor Keizo Tsukamoto

Keizo Tsukamoto 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: 20230203642
    Abstract: Nanoclusters are produced in a gas phase using a nanocluster manufacturing section including: a vacuum container; a sputtering source that has a target as a cathode, performs magnetron sputtering by pulse discharge, and generates plasma; a pulse power source that supplies pulsed power to the sputtering source; a first inert gas supply section that supplies a first inert gas to the sputtering source; a nanocluster growth cell that is contained in the vacuum container; and a second inert gas introduction section that introduces a second inert gas into the nanocluster growth cell. A multitude of supports are rolled in the gas phase and each of the supports is sprinkled with a multitude of nanoclusters to cause each support to support the multitude of nanoclusters.
    Type: Application
    Filed: June 8, 2021
    Publication date: June 29, 2023
    Inventors: Atsushi NAKAJIMA, Hironori TSUNOYAMA, Mika UNO, Hiroyuki GUNJI, Toshihiro ANDO, Keizo TSUKAMOTO, Masahide TONA, Naoyuki HIRATA
  • Patent number: 11059014
    Abstract: The present invention relates to a nanocluster liquid dispersion where nanoclusters with a predetermined number of atoms are dispersed.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: July 13, 2021
    Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, AYABO CORPORATION
    Inventors: Atsushi Nakajima, Hironori Tsunoyama, Hiroki Akatsuka, Keizo Tsukamoto
  • Patent number: 10818483
    Abstract: An object of the invention is to reduce sizes of an inert gas supply and exhaust devices used for a pulse sputtering device. Another object is to efficiently supply suitable quantity of the inert gas to a place where the inert gas is required in the pulse sputtering device. Therefore, a provided pulse sputtering device has a sputtering source that performs pulse discharge and generates plasma, a gas injection valve that injects and supplies an inert gas to the sputtering source and a controller that controls the sputtering source and the gas injection valve. The controller controls the sputtering source and the gas injection valve such that the gas injection valve injects the inert gas intermittently and such that a part of a period, in which the pulse discharge occurs in the sputtering source, overlaps with a part of a period, in which the gas injection valve injects and supplies the inert gas.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: October 27, 2020
    Assignee: AYABO CORPORATION
    Inventor: Keizo Tsukamoto
  • Patent number: 10283333
    Abstract: Improvement of control of size and structure of nanoclusters with a nanocluster production apparatus is intended. Increase of an obtained amount and a yield of nanoclusters having size and structure, at least one of which is selected, is intended. A nanocluster production apparatus has a vacuum chamber, a sputtering source that generates plasma by pulse discharge, a pulse power supply that supplies a pulsed power to the sputtering source, a first inert gas supply device that supplies a first inert gas to the sputtering source, a cluster growth cell stored in the vacuum chamber and a second inert gas introduction device that introduces a second inert gas into the cluster growth cell.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: May 7, 2019
    Assignees: JAPAN SCIENCE AND TECHNOLOGY AGENCY, AYABO CORPORATION
    Inventors: Atsushi Nakajima, Hironori Tsunoyama, Chuhang Zhang, Hiroki Akatsuka, Keizo Tsukamoto
  • Publication number: 20190096642
    Abstract: An object of the invention is to reduce sizes of an inert gas supply and exhaust devices used for a pulse sputtering device. Another object is to efficiently supply suitable quantity of the inert gas to a place where the inert gas is required in the pulse sputtering device. Therefore, a provided pulse sputtering device has a sputtering source that performs pulse discharge and generates plasma, a gas injection valve that injects and supplies an inert gas to the sputtering source and a controller that controls the sputtering source and the gas injection valve. The controller controls the sputtering source and the gas injection valve such that the gas injection valve injects the inert gas intermittently and such that a part of a period, in which the pulse discharge occurs in the sputtering source, overlaps with a part of a period, in which the gas injection valve injects and supplies the inert gas.
    Type: Application
    Filed: November 28, 2018
    Publication date: March 28, 2019
    Inventor: Keizo Tsukamoto
  • Publication number: 20180361340
    Abstract: The present invention relates to a nanocluster liquid dispersion where nanoclusters with a predetermined number of atoms are dispersed.
    Type: Application
    Filed: August 12, 2016
    Publication date: December 20, 2018
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, AYABO CORPORATION
    Inventors: Atsushi NAKAJIMA, Hironori TSUNOYAMA, Hiroki AKATSUKA, Keizo TSUKAMOTO
  • Publication number: 20170309459
    Abstract: Provided are a method and a device that can measure sputtered particles discharged by sputtering with high precision within a short time. A measuring device has a measuring section that measures a ratio between an equivalent value of the number of ion particles discharged from a target by sputtering caused by a pulsed electric discharge and an equivalent value of the number of neutral particles discharged from the target by the pulsed electric discharge. The ratio between the number of the ion particles and the number of the neutral particles discharged from the target by the sputtering can be regarded as one of factors affecting quality of a vapor-deposited film, a film growth rate and an etching rate. Thus, a factor affecting the quality of the vapor-deposited film, the film growth rate and the etching rate can be grasped and also controlled.
    Type: Application
    Filed: August 7, 2015
    Publication date: October 26, 2017
    Applicants: Ayabo Corporation, Tohoku University
    Inventors: Keizo Tsukamoto, Masahide Tona, Fuminori Misaizu, Kiichirou Koyasu
  • Publication number: 20160111262
    Abstract: Improvement of control of size and structure of nanoclusters with a nanocluster production apparatus is intended. Increase of an obtained amount and a yield of nanoclusters having size and structure, at least one of which is selected, is intended. A nanocluster production apparatus has a vacuum chamber, a sputtering source that generates plasma by pulse discharge, a pulse power supply that supplies a pulsed power to the sputtering source, a first inert gas supply device that supplies a first inert gas to the sputtering source, a cluster growth cell stored in the vacuum chamber and a second inert gas introduction device that introduces a second inert gas into the cluster growth cell.
    Type: Application
    Filed: May 26, 2014
    Publication date: April 21, 2016
    Applicants: Japan Science and Technology Agency, Ayabo Corporation
    Inventors: Atsushi Nakajima, Hironori Tsunoyama, Chuhang Zhang, Hiroki Akatsuka, Keizo Tsukamoto
  • Publication number: 20160005577
    Abstract: An object of the invention is to reduce sizes of an inert gas supply and exhaust devices used for a pulse sputtering device. Another object is to efficiently supply suitable quantity of the inert gas to a place where the inert gas is required in the pulse sputtering device. Therefore, a provided pulse sputtering device has a sputtering source that performs pulse discharge and generates plasma, a gas injection valve that injects and supplies an inert gas to the sputtering source and a controller that controls the sputtering source and the gas injection valve. The controller controls the sputtering source and the gas injection valve such that the gas injection valve injects the inert gas intermittently and such that a part of a period, in which the pulse discharge occurs in the sputtering source, overlaps with a part of a period, in which the gas injection valve injects and supplies the inert gas.
    Type: Application
    Filed: February 19, 2014
    Publication date: January 7, 2016
    Inventor: Keizo Tsukamoto
  • Patent number: 6342752
    Abstract: Mount terminals (32-34) formed on the end faces of a housing (31) in the longitudinal direction respectively abut against external electrodes (1, 2) which are formed on an end face of a piezoelectric element (6) in the longitudinal direction and used to apply input voltage, and an external electrode (3) for extracting output voltage. These abutted portions are fixed by soldering or with conductive adhesive to electrically connect the mount terminals to the external electrodes and fix the piezoelectric element (6) inside the housing (31).
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: January 29, 2002
    Assignee: Taiheiyo Cement Corporation
    Inventors: Masako Kataoka, Takeshi Fujimura, Katsuyuki Ishikawa, Takahiro Yamakawa, Keizo Tsukamoto