Patents by Inventor Takafumi Nitta

Takafumi Nitta 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: 11919581
    Abstract: A steering control device includes an electronic control unit. The electronic control unit is configured to perform end contact relaxation control for correcting a current command value such that a decrease of an end separation angle indicating a distance of an absolute steering angle from an end-position-corresponding angle is limited when the end separation angle is equal to or less than a predetermined angle and to perform partial release control for decreasing a correction value of the current command value due to execution of the end contact relaxation control based on a steering torque which is input to a steering system when a vehicle is intended to travel while turning at the time of execution of the end contact relaxation control.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: March 5, 2024
    Assignee: JTEKT CORPORATION
    Inventors: Takafumi Yamaguchi, Takahiro Toko, Nobuaki Kataoka, Shingo Nitta, Yukinobu Ezaki
  • Publication number: 20230317447
    Abstract: There is provided a technique including: forming a first film containing first element and second element; and forming a second film adjacent to the first film and containing the first element and the second element being different in characteristics from the first film, wherein one of the first and second films is formed by performing a first cycle a predetermined number of times, the first cycle including performing: (a1) supplying a first precursor gas containing the first element; and (b1) supplying a first reaction gas containing the second element, and wherein the other of the first and second films is formed by performing a second cycle a predetermined number of times, the second cycle including performing: (a2) supplying a second precursor gas containing the first element and being higher in a thermal decomposition temperature than the first precursor gas; and (b2) supplying a second reaction gas containing the second element.
    Type: Application
    Filed: December 22, 2022
    Publication date: October 5, 2023
    Applicant: Kokusai Electric Corporation
    Inventors: Shingo NOHARA, Kiyohisa ISHIBASHI, Takafumi NITTA, Kimihiko NAKATANI
  • Publication number: 20220301851
    Abstract: A method of manufacturing a semiconductor device includes: (a) forming a nitride film containing a predetermined element on a substrate by performing a cycle a predetermined number of times, the cycle including sequentially performing: (a-1) supplying a first precursor gas containing the predetermined element to the substrate; (a-2) supplying a second precursor gas containing the predetermined element and having a thermal decomposition temperature lower than a thermal decomposition temperature of the first precursor gas to the substrate; and (a-3) supplying a nitriding gas to the substrate; and (b) oxidizing the nitride film formed in (a) and modifying the nitride film into an oxide film containing the predetermined element by supplying an oxidizing gas to the substrate.
    Type: Application
    Filed: January 14, 2022
    Publication date: September 22, 2022
    Applicant: Kokusai Electric Corporation
    Inventors: Takafumi NITTA, Kiyohisa ISHIBASHI, Tsukasa KAMAKURA
  • Patent number: 10910214
    Abstract: A method of manufacturing a semiconductor device includes: providing a substrate that includes a surface exposing a first film containing silicon, oxygen, carbon and nitrogen and having an oxygen atom concentration higher than a silicon atom concentration, which is higher than a carbon atom concentration, which is equal to or higher than a nitrogen atom concentration; and changing a composition of a surface of the first film so that the nitrogen atom concentration becomes higher than the carbon atom concentration on the surface of the first film, by supplying a plasma-excited nitrogen-containing gas to the surface of the first film.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: February 2, 2021
    Assignee: KOKUSAI ELECTRIC CORPORATION
    Inventors: Yoshitomo Hashimoto, Masanori Nakayama, Masaya Nagato, Tatsuru Matsuoka, Hiroki Tamashita, Takafumi Nitta, Satoshi Shimamoto
  • Patent number: 10763101
    Abstract: There is provided a technique that includes forming a first film including a ring-shaped structure composed of silicon and carbon and containing nitrogen so as to fill a recess formed in a surface of a substrate by performing a cycle a predetermined number of times, and performing post-treatment by supplying an oxidizing agent to the substrate under a condition that the ring-shaped structure included in the first film is preserved. The cycle includes non-simultaneously performing supplying a precursor including the ring-shaped structure and containing halogen to the substrate with the recess formed in the surface, and supplying a nitriding agent to the substrate, wherein the cycle is performed under a condition that the ring-shaped structure included in the precursor is preserved.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: September 1, 2020
    Assignee: KOKUSAI ELECTRIC CORPORATION
    Inventors: Yoshitomo Hashimoto, Takafumi Nitta, Hiroki Yamashita
  • Patent number: 10720325
    Abstract: Provided is a technique which includes forming on a substrate an oxide film containing silicon or a metal element and doped with a dopant by performing a cycle a predetermined number of times, wherein the cycle includes sequentially and non-simultaneously performing: (a) supplying a first gas to the substrate wherein the first gas is free of chlorine and contains boron or phosphorus as the dopant; (b) supplying a second gas to the substrate wherein the second gas contains silicon or the metal element; and (c) supplying a third gas to the substrate wherein the third gas contains oxygen.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: July 21, 2020
    Assignee: Kokusai Electric Corporation
    Inventors: Takafumi Nitta, Yushin Takasawa, Satoshi Shimamoto, Hiroki Yamashita
  • Publication number: 20190221425
    Abstract: There is provided a technique that includes forming a first film including a ring-shaped structure composed of silicon and carbon and containing nitrogen so as to fill a recess formed in a surface of a substrate by performing a cycle a predetermined number of times, and performing post-treatment by supplying an oxidizing agent to the substrate under a condition that the ring-shaped structure included in the first film is preserved. The cycle includes non-simultaneously performing supplying a precursor including the ring-shaped structure and containing halogen to the substrate with the recess formed in the surface, and supplying a nitriding agent to the substrate, wherein the cycle is performed under a condition that the ring-shaped structure included in the precursor is preserved.
    Type: Application
    Filed: January 15, 2019
    Publication date: July 18, 2019
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Yoshitomo HASHIMOTO, Takafumi NITTA, Hiroki YAMASHITA
  • Publication number: 20180337031
    Abstract: A method of manufacturing a semiconductor device includes: providing a substrate that includes a surface exposing a first film containing silicon, oxygen, carbon and nitrogen and having an oxygen atom concentration higher than a silicon atom concentration, which is higher than a carbon atom concentration, which is equal to or higher than a nitrogen atom concentration; and changing a composition of a surface of the first film so that the nitrogen atom concentration becomes higher than the carbon atom concentration on the surface of the first film, by supplying a plasma-excited nitrogen-containing gas to the surface of the first film.
    Type: Application
    Filed: May 17, 2018
    Publication date: November 22, 2018
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yoshitomo HASHIMOTO, Masanori NAKAYAMA, Masaya NAGATO, Tatsuru MATSUOKA, Hiroki YAMASHITA, Takafumi NITTA, Satoshi SHIMAMOTO
  • Patent number: 10134586
    Abstract: A technique includes forming a laminated film on a substrate by performing a cycle a predetermined number of times. The cycle includes forming a first film which contains at least a predetermined element and oxygen, and forming a second film which contains at least the predetermined element, oxygen and carbon. The first film and the second film are laminated to form the laminated film.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: November 20, 2018
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Takafumi Nitta, Satoshi Shimamoto, Yoshiro Hirose
  • Publication number: 20180218897
    Abstract: Provided is a technique which includes forming on a substrate an oxide film containing silicon or a metal element and doped with a dopant by performing a cycle a predetermined number of times, wherein the cycle includes sequentially and non-simultaneously performing: (a) supplying a first gas to the substrate wherein the first gas is free of chlorine and contains boron or phosphorus as the dopant; (b) supplying a second gas to the substrate wherein the second gas contains silicon or the metal element; and (c) supplying a third gas to the substrate wherein the third gas contains oxygen.
    Type: Application
    Filed: January 22, 2018
    Publication date: August 2, 2018
    Inventors: Takafumi NITTA, Yushin TAKASAWA, Satoshi SHIMAMOTO, Hiroki YAMASHITA
  • Patent number: 10032629
    Abstract: A method of manufacturing a semiconductor device includes: providing a substrate; and forming a film on the substrate by supplying a silicon hydride and a halogen element-free catalyst containing one of a group III element or a group V element to the substrate, under a condition that the silicon hydride is not thermally decomposed when the silicon hydride is present alone.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: July 24, 2018
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Takafumi Nitta, Satoshi Shimamoto, Yoshiro Hirose
  • Patent number: 9773661
    Abstract: There is provided a method of manufacturing a semiconductor device, comprising forming a film on a substrate by performing a cycle a predetermined number of times, the cycle including non-simultaneously performing forming a first layer by supplying a precursor containing hydrogen and an halogen element to the substrate in a process chamber, under a condition in which the precursor is pyrolyzed if the precursor exists alone and under a condition in which a flow rate of the precursor supplied into the process chamber is larger than a flow rate of the precursor exhausted from an interior of the process chamber and forming a second layer by supplying a reactant to the substrate in the process chamber thereby modifying the first layer.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: September 26, 2017
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Takafumi Nitta, Satoshi Shimamoto, Yoshiro Hirose
  • Publication number: 20170092486
    Abstract: A method of manufacturing a semiconductor device includes: providing a substrate; and forming a film on the substrate by supplying a silicon hydride and a halogen element-free catalyst containing one of a group III element or a group V element to the substrate, under a condition that the silicon hydride is not thermally decomposed when the silicon hydride is present alone.
    Type: Application
    Filed: September 23, 2016
    Publication date: March 30, 2017
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Takafumi NITTA, Satoshi SHIMAMOTO, Yoshiro HIROSE
  • Publication number: 20160358767
    Abstract: There is provided a method of manufacturing a semiconductor device, comprising forming a film on a substrate by performing a cycle a predetermined number of times, the cycle including non- simultaneously performing forming a first layer by supplying a precursor containing hydrogen and an halogen element to the substrate in a process chamber, under a condition in which the precursor is pyrolyzed if the precursor exists alone and under a condition in which a flow rate of the precursor supplied into the process chamber is larger than a flow rate of the precursor exhausted from an interior of the process chamber and forming a second layer by supplying a reactant to the substrate in the process chamber thereby modifying the first layer.
    Type: Application
    Filed: June 1, 2016
    Publication date: December 8, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Takafumi NITTA, Satoshi SHIMAMOTO, Yoshiro HIROSE
  • Publication number: 20160071720
    Abstract: A technique includes forming a laminated film on a substrate by performing a cycle a predetermined number of times. The cycle includes forming a first film which contains at least a predetermined element and oxygen, and forming a second film which contains at least the predetermined element, oxygen and carbon. The first film and the second film are laminated to form the laminated film.
    Type: Application
    Filed: September 4, 2015
    Publication date: March 10, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Takafumi NITTA, Satoshi SHIMAMOTO, Yoshiro HIROSE
  • Publication number: 20120134512
    Abstract: A mixer device, a player and a reproduction system and the like are provided which enable a user to acknowledge at the player side whether reproduction signals being reproduced with the player are in an on-air state (whether it is output from the mixer device side) and can prevent mistaken operations by the user. The mixer device 20 is connected to one or more players 10 and outputs reproduction signals being reproduced with the player 10 to an output device 30, and further outputs an on-air signal indicating that the reproduction signals are output to the output device 30 (being in an on-air state) to the player 10 as input source of the reproduction signals.
    Type: Application
    Filed: April 24, 2009
    Publication date: May 31, 2012
    Applicant: PIONEER CORPORATION
    Inventors: Takashi Mashita, Kazuhiko Umehara, Tomohiko Kimura, Tetsuya Kikuchi, Takafumi Nitta
  • Publication number: 20070242898
    Abstract: Quality of an image inputted from a video input terminal is adjusted at an image processing unit using a parameter set fitted for the image selected from a plurality of parameter sets received in a parameter set receiving unit. The using parameter set is stored in a parameter memory. A scene judging unit generates a hue histogram of each frame. When a change of the parameter set is necessary, a parameter mixing unit gradually replaces values of the parameter set stored in the parameter memory with a new parameter set selected by a selector. The replaced parameter set is stored in the parameter memory and is used in the image processing unit for adjusting the image quality.
    Type: Application
    Filed: April 13, 2007
    Publication date: October 18, 2007
    Applicant: PIONEER CORPORATION
    Inventors: Akira Kato, Hirokuni Ishigami, Takafumi Nitta, Masanori Ando