Patents by Inventor Naoki KAWABATA

Naoki KAWABATA 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: 20220154299
    Abstract: A top-blowing lance nozzle is configured to freely switch an adequate expansion condition so as to control an oxygen-blowing amount and a jetting velocity independently of each other without requiring a plurality of lance nozzles or a mechanically movable part. A lance nozzle is configured to blow refining oxygen to molten iron charged in a reaction vessel while a gas is blown from a top-blowing lance to the molten iron. One or more blowing holes for blowing a working gas are on an inner wall side surface of the nozzle, at a site where the lance nozzle has a minimum cross-sectional area in a nozzle axis direction or at a neighboring site of the site.
    Type: Application
    Filed: April 2, 2020
    Publication date: May 19, 2022
    Applicant: JFE STEEL CORPORATION
    Inventors: Yumi MURAKAMI, Nobuhiko ODA, Yusuke FUJII, Goro OKUYAMA, Shota AMANO, Shinji KOSEKI, Shingo SATO, Yukio TAKAHASHI, Ryo KAWABATA, Naoki KIKUCHI, Atsuo YUASA
  • Patent number: 11236882
    Abstract: A vehicle lamp includes a first lamp unit that includes a light source, a driving unit, and a reflective body that is driven by the driving unit to repeat a periodic motion and thus scans an exit beam from the light source; and a controlling unit that controls the first lamp unit. The controlling unit instructs that the driving unit be driven until a first duration T1 has passed even in a case where the controlling unit has received an illumination instruction instructing the first lamp unit to emit a beam and then received a stop instruction instructing the first lamp unit to stop emitting a beam.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: February 1, 2022
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuta Maruyama, Naoki Kawabata, Kentarou Murakami
  • Publication number: 20220022300
    Abstract: A lighting circuit turns on a plurality of semiconductor light sources. Multiple current sources are each coupled to a corresponding semiconductor light source. A switching converter supplies a driving voltage VOUT across each of multiple series connection circuits each formed of the semiconductor light source and the current source. A converter controller employing a ripple control method turns on a switching transistor of the switching converter in response to a voltage across any one of the multiple current sources decreasing to a bottom limit voltage.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 20, 2022
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Ryosuke MATSUHANA, Satoshi KIKUCHI, Naoki KAWABATA, Norito TAKAHASHI
  • Publication number: 20220022299
    Abstract: A lighting circuit turns on a plurality of semiconductor light sources. Multiple current sources are each coupled to a corresponding semiconductor light source. A switching converter supplies a driving voltage VOUT across each of multiple series connection circuits each formed of the semiconductor light source and the current source. A converter controller employing a ripple control method turns on a switching transistor of the switching converter in response to a voltage across any one of the multiple current sources decreasing to a bottom limit voltage.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 20, 2022
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Ryosuke MATSUHANA, Satoshi KIKUCHI, Naoki KAWABATA, Norito TAKAHASHI
  • Patent number: 11199304
    Abstract: A vehicle lamp includes a first lamp unit that includes a light source, a driving unit, and a reflective body that is driven by the driving unit to repeat a periodic motion and thus scans an exit beam from the light source; and a controlling unit that controls the first lamp unit. The controlling unit instructs that the driving unit be driven until a first duration T1 has passed even in a case where the controlling unit has received an illumination instruction instructing the first lamp unit to emit a beam and then received a stop instruction instructing the first lamp unit to stop emitting a beam.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: December 14, 2021
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuta Maruyama, Naoki Kawabata, Kentarou Murakami
  • Publication number: 20200275542
    Abstract: A lighting circuit turns on a plurality of semiconductor light sources. Multiple current sources are each coupled to a corresponding semiconductor light source. A switching converter supplies a driving voltage VOUT across each of multiple series connection circuits each formed of the semiconductor light source and the current source. A converter controller employing a ripple control method turns on a switching transistor of the switching converter in response to a voltage across any one of the multiple current sources decreasing to a bottom limit voltage.
    Type: Application
    Filed: May 14, 2020
    Publication date: August 27, 2020
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ICHIKAWA, Ryosuke MATSUHANA, Satoshi KIKUCHI, Naoki KAWABATA, Norito TAKAHASHI
  • Publication number: 20200238892
    Abstract: A vehicle lamp includes a first lamp unit that includes a light source, a driving unit, and a reflective body that is driven by the driving unit to repeat a periodic motion and thus scans an exit beam from the light source; and a controlling unit that controls the first lamp unit. The controlling unit instructs that the driving unit be driven until a first duration T1 has passed even in a case where the controlling unit has received an illumination instruction instructing the first lamp unit to emit a beam and then received a stop instruction instructing the first lamp unit to stop emitting a beam.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Applicant: KOITO MANUFACTURING CO., LTD.
    Inventors: Yuta MARUYAMA, Naoki KAWABATA, Kentarou MURAKAMI
  • Patent number: 10396377
    Abstract: A fuel cell device according to the present invention includes a controller. The controller is configured to allow a fuel gas supply device and an oxygen-containing gas supply device to supply the fuel gas and the oxygen-containing gas supplied to fuel cells (19) in a supply amount less than a supply amount to be set in accordance with a decreased power as required by the external load as well as to cause an igniter to start operation if the power required by the external load decreases and flameout of the combustion in a combustor (45) is recognized.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: August 27, 2019
    Assignee: KYOCERA Corporation
    Inventors: Naoki Kawabata, Nobuhiko Hachiki
  • Publication number: 20180248211
    Abstract: A fuel cell module includes: a housing; cell stacks; a reformer; a gas supply section which supplies an oxygen-containing gas; heat insulators; and a burning section. The cell stacks are disposed in juxtaposition and each comprise fuel cells which are arranged along a predetermined arrangement direction. The reformer is disposed above the cell stacks. The gas supply section is disposed between the adjacent cell stacks. The heat insulators are disposed on both end sides in an arrangement direction of the cell stacks so that the cell stacks are sandwiched between the heat insulators. The burning section lies in corresponding one of spaces each located between the cell stacks and the reformer. The fuel cell module further comprises a communicating portion which communicates between the adjacent spaces, the communicating portion being disposed in at least one end of each of the cell stacks in the predetermined arrangement direction.
    Type: Application
    Filed: August 31, 2016
    Publication date: August 30, 2018
    Inventors: Masanori Suehiro, Naoki Kawabata, Tomoyuki Oda
  • Publication number: 20170084940
    Abstract: A fuel cell device according to the present invention includes a controller. The controller is configured to allow a fuel gas supply device and an oxygen-containing gas supply device to supply the fuel gas and the oxygen-containing gas supplied to fuel cells (19) in a supply amount less than a supply amount to be set in accordance with a decreased power as required by the external load as well as to cause an igniter to start operation if the power required by the external load decreases and flameout of the combustion in a combustor (45) is recognized.
    Type: Application
    Filed: March 18, 2015
    Publication date: March 23, 2017
    Inventors: Naoki KAWABATA, Nobuhiko HACHIKI