Patents by Inventor Koichi Oikawa

Koichi Oikawa 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: 11948811
    Abstract: A cleaning apparatus includes: a cleaning tank that defines a cleaning space for cleaning a wafer; a wafer rotation mechanism that is arranged inside the cleaning tank and holds and rotates the wafer; a cleaning member that contacts and cleans a surface of the wafer, is rotatable around a central axis extending in a lateral direction, and has a length in an axial direction longer than a radius of the wafer; a swing mechanism that swings the cleaning member around a swing axis located inside the cleaning tank to move the cleaning member from a retracted position outside of the wafer to a cleaning position directly above the wafer; a second cleaning means that cleans the surface of the wafer; and a second swing mechanism that swings the second cleaning means around a second swing axis located inside the cleaning tank to pass directly above a center of the wafer.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: April 2, 2024
    Assignee: EBARA CORPORATION
    Inventors: Mitsuru Miyazaki, Tomoaki Fujimoto, Koichi Fukaya, Fumitoshi Oikawa, Takuya Inoue
  • Publication number: 20240082885
    Abstract: A substrate cleaning device includes a rotation mechanism that rotates the substrate, a first cleaning solution supply nozzle that discharges a cleaning solution to which ultrasonic vibration is applied to the surface of the substrate, and a swing mechanism that swings the first cleaning solution supply nozzle from a vicinity of a rotation center of the substrate toward an outer peripheral edge of the substrate in a range narrower than a half-surface of the substrate.
    Type: Application
    Filed: November 16, 2023
    Publication date: March 14, 2024
    Inventors: Fumitoshi Oikawa, Koichi Fukaya, Erina Baba, Shuichi Suemasa, Hisajiro Nakano
  • Publication number: 20240075503
    Abstract: A substrate cleaning apparatus includes a substrate rotation supporting section that supports and rotates a substrate; a roll holding section that rotatably holds a first roll cleaning member and a second roll cleaning member each having a length almost equal to a radius of the substrate; a roll rotation drive section that rotates the first roll cleaning member and the second roll cleaning member about respective axes of rotation parallel to a front surface of the substrate; and a roll pressing section that brings the first roll cleaning member and the second roll cleaning member that are rotating into sliding contact with the front surface of the substrate. The first roll cleaning member and the second roll cleaning member are disposed so as to cover different radial parts of the front surface of the substrate.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 7, 2024
    Inventors: Fumitoshi OIKAWA, Koichi FUKAYA, Mitsuru MIYAZAKI
  • Patent number: 11343515
    Abstract: A computer-readable recording medium storing a program that causes a computer to execute a process, the process includes specifying occurrence frequencies of respective gradation values with regard to pixels included in image data and represented by gradation values of a predetermined bit count; extracting a predetermined number of gradation values from a gradation value having a high occurrence frequency in a descending order; generating correspondence information for performing bit conversion of the extracted gradation values into coded values of a bit count in accordance with the predetermined number; and encoding the image data by performing bit conversion of first pixels having any one of the predetermined number of gradation values among the pixels based on the correspondence information, and performing bit conversion of second pixels having any one of gradation values other than the predetermined number of gradation values among the pixels.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: May 24, 2022
    Assignee: FUJITSU LIMITED
    Inventors: Koichi Oikawa, Hideyuki Kikuchi, Yusuke Nakanishi
  • Patent number: 11145045
    Abstract: An image processing method is performed by a computer, for determining that a line is a crack or something other than the crack. The method includes: extracting a linear region from an image of an object captured by an imaging apparatus; determining a luminosity change in a direction traversing the linear region at each of a plurality of positions separate in a longitudinal direction of the linear region; and identifying a type of the linear region based on the luminosity changes at the plurality of positions.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: October 12, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Yusuke Nakanishi, Hideyuki Kikuchi, Koichi Oikawa
  • Patent number: 11001923
    Abstract: A method of manufacturing a semiconductor device includes (a) under a first process condition, supplying a purge gas containing hydrogen and oxygen to a process chamber from which an oxide film adhering to an internal member is removed by a cleaning gas containing a halogen element and exhausting the purge gas from the process chamber; and (b) under a second process condition differing from the first process condition, supplying the purge gas to the process chamber and exhausting the purge gas from the process chamber after performing (a), wherein the first process condition is a process condition under which reactivity of the halogen element, which remains within the process chamber when the cleaning gas is supplied to the process chamber, with the purge gas is higher than reactivity of the halogen element with the purge gas under the second process condition.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: May 11, 2021
    Assignee: KOKUSAI ELECTRIC CORPORATION
    Inventors: Noriyuki Isobe, Kenji Kameda, Koichi Oikawa
  • Publication number: 20200252633
    Abstract: A computer-readable recording medium storing a program that causes a computer to execute a process, the process includes specifying occurrence frequencies of respective gradation values with regard to pixels included in image data and represented by gradation values of a predetermined bit count; extracting a predetermined number of gradation values from a gradation value having a high occurrence frequency in a descending order; generating correspondence information for performing bit conversion of the extracted gradation values into coded values of a bit count in accordance with the predetermined number; and encoding the image data by performing bit conversion of first pixels having any one of the predetermined number of gradation values among the pixels based on the correspondence information, and performing bit conversion of second pixels having any one of gradation values other than the predetermined number of gradation values among the pixels.
    Type: Application
    Filed: January 22, 2020
    Publication date: August 6, 2020
    Applicant: FUJITSU LIMITED
    Inventors: Koichi OIKAWA, Hideyuki Kikuchi, Yusuke Nakanishi
  • Publication number: 20190385295
    Abstract: An image processing method is performed by a computer, for determining that a line is a crack or something other than the crack. The method includes: extracting a linear region from an image of an object captured by an imaging apparatus; determining a luminosity change in a direction traversing the linear region at each of a plurality of positions separate in a longitudinal direction of the linear region; and identifying a type of the linear region based on the luminosity changes at the plurality of positions.
    Type: Application
    Filed: May 20, 2019
    Publication date: December 19, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Yusuke Nakanishi, Hideyuki Kikuchi, Koichi OIKAWA
  • Patent number: 9708708
    Abstract: A film is efficiently formed by sufficiently supplying a source gas to substrates accommodated in a process chamber, and the uniformity of a film formed on the substrates is improved. A method of a semiconductor device manufacturing includes (a) supplying a source gas to an upper region of a process chamber through a first gas supply hole disposed at a front end of a first nozzle disposed in a lower region of the process chamber where the source gas is not pyrolyzed; (b) supplying the source gas to substrates disposed in the lower region and a middle region of the process chamber through a plurality of second gas supply holes of a second nozzle; and (c) supplying a reactive gas to substrates disposed in the lower region, the middle region and the upper region of the process chamber through a plurality of third gas supply holes of a third nozzle.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: July 18, 2017
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Noriyuki Isobe, Yuji Takebayashi, Kenichi Suzaki, Takeshi Kasai, Atsushi Hirano, Koichi Oikawa
  • Publication number: 20170067159
    Abstract: A film is efficiently formed by sufficiently supplying a source gas to substrates accommodated in a process chamber, and the uniformity of a film formed on the substrates is improved. A method of a semiconductor device manufacturing includes (a) supplying a source gas to an upper region of a process chamber through a first gas supply hole disposed at a front end of a first nozzle disposed in a lower region of the process chamber where the source gas is not pyrolyzed; (b) supplying the source gas to substrates disposed in the lower region and a middle region of the process chamber through a plurality of second gas supply holes of a second nozzle; and (c) supplying a reactive gas to substrates disposed in the lower region, the middle region and the upper region of the process chamber through a plurality of third gas supply holes of a third nozzle.
    Type: Application
    Filed: September 8, 2016
    Publication date: March 9, 2017
    Inventors: Noriyuki ISOBE, Yuji TAKEBAYASHI, Kenichi SUZAKI, Takeshi KASAI, Atsushi HIRANO, Koichi OIKAWA
  • Publication number: 20160362784
    Abstract: A method of manufacturing a semiconductor device includes (a) under a first process condition, supplying a purge gas containing hydrogen and oxygen to a process chamber from which an oxide film adhering to an internal member is removed by a cleaning gas containing a halogen element and exhausting the purge gas from the process chamber; and (b) under a second process condition differing from the first process condition, supplying the purge gas to the process chamber and exhausting the purge gas from the process chamber after performing (a), wherein the first process condition is a process condition under which reactivity of the halogen element, which remains within the process chamber when the cleaning gas is supplied to the process chamber, with the purge gas is higher than reactivity of the halogen element with the purge gas under the second process condition.
    Type: Application
    Filed: June 7, 2016
    Publication date: December 15, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Noriyuki ISOBE, Kenji KAMEDA, Koichi OIKAWA
  • Patent number: 8619842
    Abstract: A communication device includes: a reception unit that receives a beacon signal including an identification number of a slave unit from a master unit; a first assignment unit that performs an assignment of a first communication interval for receiving a signal from the master unit based on the number of identification numbers included in the beacon signal; and a second assignment unit that performs an assignment of a second communication interval for transmitting a signal to the master unit within a rest of time calculated by subtracting the first communication interval and a non-communication interval, which is not used for a communication with the master unit, from a signal period which is a period of the beacon signal.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: December 31, 2013
    Assignee: Fujitsu Limited
    Inventors: Hideo Okada, Tomohiro Aoyagi, Koichi Oikawa, Toru Kamada
  • Publication number: 20120093243
    Abstract: A communication device includes: a reception unit that receives a beacon signal including an identification number of a slave unit from a master unit; a first assignment unit that performs an assignment of a first communication interval for receiving a signal from the master unit based on the number of identification numbers included in the beacon signal; and a second assignment unit that performs an assignment of a second communication interval for transmitting a signal to the master unit within a rest of time calculated by subtracting the first communication interval and a non-communication interval, which is not used for a communication with the master unit, from a signal period which is a period of the beacon signal.
    Type: Application
    Filed: September 7, 2011
    Publication date: April 19, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Hideo OKADA, Tomohiro Aoyagi, Koichi Oikawa, Toru Kamada
  • Patent number: 6655244
    Abstract: A centering apparatus for centering a disk about a center member such as a shaft or hub includes a plurality of pairs of actuator units. The actuator units of each of the pairs faces each other through the disk. Each of the actuator units has a member which moves linearly and can come into contact with the disk.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: December 2, 2003
    Assignee: Fujitsu Limited
    Inventors: Mitsuru Shiraishi, Koichi Oikawa, Hitoshi Komoriya, Yutaka Nakamura, Takao Hirahara
  • Publication number: 20030061095
    Abstract: A system for automating a process of organizing programming in which more popular Internet content is associated with an advertisement with a higher advertisement rate in a dynamic way. Such programming will enable viewers to listen to and watch contents and advertisements in a non-selective manner as in the case of telecasting. The system includes means for registering each content to be delivered to the user; means for registering each advertisement to be delivered to the user; means for organizing the programming in which the registered contents and advertisements are associated with one another according to the number of accesses to the content and the amount of payment for the advertisement; means for sending out programming information about the organized programming; and a player for reproducing the programming according to the programming information, so that the contents and the advertisements both forming the programming are offered to the user.
    Type: Application
    Filed: March 12, 2002
    Publication date: March 27, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Toru Kamada, Yasuyuki Nakata, Koichi Oikawa
  • Publication number: 20020029667
    Abstract: A centering apparatus for centering a disk about a center member such as a shaft or hub includes a plurality of pairs of actuator units. The actuator units of each of the pairs faces each other through the disk. Each of the actuator units has a member which moves linearly and can come into contact with the disk.
    Type: Application
    Filed: June 18, 1999
    Publication date: March 14, 2002
    Inventors: MITSURU SHIRAISHI, KOICHI OIKAWA, HITOSHI KOMORIYA, YUTAKA NAKAMURA, TAKAO HIRAHARA
  • Patent number: 6350019
    Abstract: An ink jet head includes a pressure chamber, a vibration plate, and a piezoelectric element which is provided on the vibration plate and causes a volume displacement of the pressure chamber. The piezoelectric element has a thickness of 20 &mgr;m or less, and the pressure chamber and the piezoelectric element satisfy a relation V0/(L22b)>550×10−6, where V0 [m3] denotes a volume displacement of the pressure chamber when the piezoelectric element is driven, L2 [m] denotes a width of the piezoelectric element, and b [m] denotes a depth of the pressure chamber.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: February 26, 2002
    Assignee: Fujitsu Limited
    Inventors: Tomohisa Shingai, Koichi Oikawa, Shuji Koike, Yoshiaki Sakamoto
  • Patent number: 6223405
    Abstract: A method of manufacturing an ink jet head includes the following steps, wherein the ink jet head is provided with a plurality of pressure chambers arranged continuously, ink feed means for feeding ink into these pressure chambers, and ink ejecting means for ejecting ink from each pressure chamber via a nozzle, so as to feed and eject ink by a change in volume of each pressure chamber. First, a first metallic film is formed on both surfaces of at least one wall composing the pressure chamber perpendicular to an arranging direction of the plurality of pressure chambers, wherein the at least one wall is one wall of a piezoelectric element deformed when a voltage is impressed. Then, the first metallic film formed on one of the both surfaces of at lest one wall is removed to form an exposed surface of the wall of the piezoelectric element.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: May 1, 2001
    Assignee: Fujitsu Limited
    Inventors: Koichi Oikawa, Jun Kodama, Akira Iwaishi, Masayuki Kato, Tomohisa Shingai, Yuji Yoshida, Kazuki Ogawa, Ryosuke Yabu, Isao Mizobuchi, Masahiro Nagai