Patents by Inventor Kenji Fujimoto

Kenji Fujimoto 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: 11967750
    Abstract: A low-cost, small-size Wilkinson-type combiner that suppresses the risk of damaging an isolation resistor due to combination loss is provided. The combiner comprises first and second input terminals to which RF signals are input; an output terminal; a wiring line that combines the RF signals input to the first and second input terminals, and outputs the combined signal to the output terminal; an isolation unit provided between the first and second input terminals and formed by a first isolation resistor, a transformer, and a second isolation resistor connected in series; a detection circuit connected to a secondary coil of the transformer and configured to detect a current flowing in the secondary coil; and a determination circuit that outputs a control signal to block input of RF signals to the first and second input terminals if the current flowing in the isolation unit and detected by the detection circuit is higher than or equal to a prescribed value.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: April 23, 2024
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Sunao Egashira, Kenji Nasu, Yuichiro Suenaga, Naoya Fujimoto
  • Patent number: 11952441
    Abstract: A method for producing polytetrafluoroethylene, which includes polymerizing tetrafluoroethylene in an aqueous medium in the presence of a nucleating agent and a hydrocarbon anionic surfactant to obtain polytetrafluoroethylene. A total amount of the nucleating agent and the hydrocarbon anionic surfactant at the initiation of polymerization is more than 50 ppm based on the aqueous medium.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: April 9, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo Kato, Yohei Fujimoto, Kenji Ichikawa, Hiroyuki Sato, Yoshinori Nanba, Hirotoshi Yoshida, Kengo Ito, Chiaki Okui, Masamichi Sukegawa, Taku Yamanaka
  • Publication number: 20240109459
    Abstract: A seat cushion is formed integrally by a body pad portion, an outer peripheral edge portion, and a connection portion. The outer peripheral edge portion protrudes toward a floor panel from the outer peripheral edge portion in a plan view and contacts a floor panel at its lower face. The connection portion is provided to protrude toward the floor panel at a portion which is separated from a front-side part of the outer peripheral edge portion and a rear-side part of the outer peripheral edge portion, respectively. The connection portion connects the floor panel and the body pad portion. A portion between the front-side part and the rear-side part of the outer peripheral edge portion in a vehicle longitudinal direction is a separation portion where a lower face of the seat cushion faces an upper face of the floor panel with a gap.
    Type: Application
    Filed: February 23, 2023
    Publication date: April 4, 2024
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kenji MATSUMOTO, Miho KURATA, Sakayu TERADA, Daisuke YAMADA, Yuki HANAZAWA, Naoko MOTOYOSHI, Aoi FUJIMOTO, Junsuke INOUE, Takashi SUZUKI
  • Patent number: 11935234
    Abstract: A computer obtains a chest X-ray image, detects boundary lines in the chest X-ray image using a model constructed through machine learning, sets a third lung area including at least one of a first lung area or a second lung area, extracts a vascular index indicating at least one of thickness or density of at least one pulmonary blood vessel present in an area included in the third lung area, determines whether the area included in the third lung area is in an abnormal state on a basis of the vascular index and a reference index based on indices extracted in advance from an area in chest X-ray images in a normal state corresponding to the area included in the third lung area, and outputs, if determining that the area included in the third lung area is in an abnormal state, information indicating a result of the determination.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: March 19, 2024
    Assignee: PANASONIC CORPORATION
    Inventors: Kenji Kondo, Jun Ozawa, Hirohiko Kimura, Harumi Itoh, Masato Tanaka, Shinichi Fujimoto
  • Publication number: 20240085023
    Abstract: A premixed combustion burner including: an outer tube having an inlet opening on a first side in an axial direction and an outlet opening on a second side in the axial direction; an inner tube formed in a cylindrical shape extending in the axial direction and spaced inside the outer tube, and forming a film air flow path between the inner and outer tubes; and a strut extending inward from the inner wall surface of the outer tube and supporting the inner tube. An end of the inner tube on the first side is located further towards the second side than the outer tube inlet opening. An end of the inner tube on the second side is located further towards the first side than the outlet opening of the outer tube. The outer tube, the strut, and the inner tube are formed with a fuel injection flow path.
    Type: Application
    Filed: November 26, 2021
    Publication date: March 14, 2024
    Inventors: Kiyoshi FUJIMOTO, Tomo KAWAKAMI, Kenji MIYAMOTO, Keisuke MIURA, Shinichi FUKUBA
  • Patent number: 11548827
    Abstract: Provided is a member for a plasma processing apparatus consisting of a tungsten carbide phase. The member includes at least one type of atom selected from the group consisting of a Fe atom, a Co atom, and a Ni atom, in which the total content of the atoms is in a range of 30 to 3300 atomic ppm.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: January 10, 2023
    Assignees: NIPPON TUNGSTEN CO., LTD., TOKYO ELECTRON LIMITED
    Inventors: Takashi Ikeda, Hajime Ishii, Kenji Fujimoto, Naoyuki Satoh, Nobuyuki Nagayama, Koichi Murakami, Takahiro Murakami
  • Patent number: 11515442
    Abstract: An optical semiconductor element having a mesa portion includes a substrate and semiconductor layers on the substrate. The optical semiconductor element further includes a first contact electrode, a second contact electrode on the semiconductor layer, first and second lead-out wires connected to the first and second contact electrodes, respectively, and an insulating film covering at least an upper surface of the semiconductor layer and the second contact electrode. The second lead-out wire is connected to the second contact electrode in an opening of the insulating film. An outer peripheral end of the second contact electrode in at least a portion where the second contact electrode and the second lead-out wire are connected is above and outside an outer peripheral end of a connection portion with the semiconductor layer, and an inner peripheral end is above and inside an inner peripheral end of the connection portion with the semiconductor layer.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: November 29, 2022
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kenji Fujimoto, Koshi Himeda, Toshihiro Tada, Tetsuro Toritsuka, Shinji Kaburaki
  • Patent number: 11434174
    Abstract: A member for a plasma processing apparatus has a tungsten carbide phase, and a sub-phase including at least one selected from the group consisting of phase I to IV, and phase V, in which the phase I is a carbide phase containing, as a constituent element, at least one of the elements of Group IV, V, and VI of the periodic table excluding W, the phase II is a nitride phase containing, as a constituent element, at least one of the elements of Group IV, V, and VI of the periodic table excluding W, the phase III is a carbonitride phase containing, as a constituent element, at least one of the elements of Group IV, Group V, and Group VI of the periodic table excluding W, the phase IV is a carbon phase, the phase V is a composite carbide phase which is represented by a formula WxMyCz.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: September 6, 2022
    Assignees: NIPPON TUNGSTEN CO., LTD., TOKYO ELECTRON LIMITED
    Inventors: Takashi Ikeda, Hajime Ishii, Kenji Fujimoto, Naoyuki Satoh, Nobuyuki Nagayama, Koichi Murakami, Takahiro Murakami
  • Publication number: 20210036176
    Abstract: An optical semiconductor element having a mesa portion includes a substrate and semiconductor layers on the substrate. The optical semiconductor element further includes a first contact electrode, a second contact electrode on the semiconductor layer, first and second lead-out wires connected to the first and second contact electrodes, respectively, and an insulating film covering at least an upper surface of the semiconductor layer and the second contact electrode. The second lead-out wire is connected to the second contact electrode in an opening of the insulating film. An outer peripheral end of the second contact electrode in at least a portion where the second contact electrode and the second lead-out wire are connected is above and outside an outer peripheral end of a connection portion with the semiconductor layer, and an inner peripheral end is above and inside an inner peripheral end of the connection portion with the semiconductor layer.
    Type: Application
    Filed: October 2, 2020
    Publication date: February 4, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kenji FUJIMOTO, Koshi HIMEDA, Toshihiro TADA, Tetsuro TORITSUKA, Shinji KABURAKI
  • Patent number: 10859088
    Abstract: Provided is a TiCx—(Ti—Mo) sliding material having a binder phase made of a Ti—Mo alloy, and a hard phase containing TiCx, wherein the TiCx—(Ti—Mo) sliding material satisfies all the following conditions: (1) a total area of the binder phase and the hard phase is 90% or more of an area of a field of view; (2) a total area of the binder phase is 15% or more and 20% or less of the area of the field of view; (3) in the binder phase, a total area of the binder phase having a diameter equivalent to 10 ?m or more and 50 ?m or less; (4) in the binder phase, a total area of the binder phase having a diameter equivalent to less than 10 ?m; and (5) a Mo concentration in the binder phase is 25 wt % or more and 35 wt % or less.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: December 8, 2020
    Assignees: EBARA CORPORATION, NIPPON TUNGSTEN CO., LTD.
    Inventors: Nobuaki Ito, Kenichi Sugiyama, Hiroshi Yakuwa, Norio Takahashi, Makoto Komiya, Kenji Fujimoto
  • Publication number: 20200317583
    Abstract: Provided is a member for a plasma processing apparatus consisting of a tungsten carbide phase. The member includes at least one type of atom selected from the group consisting of a Fe atom, a Co atom, and a Ni atom, in which the total content of the atoms is in a range of 30 to 3300 atomic ppm.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 8, 2020
    Inventors: Takashi IKEDA, Hajime ISHII, Kenji FUJIMOTO, Naoyuki SATOH, Nobuyuki NAGAYAMA, Koichi MURAKAMI, Takahiro MURAKAMI
  • Publication number: 20200317582
    Abstract: A member for a plasma processing apparatus has a tungsten carbide phase, and a sub-phase including at least one selected from the group consisting of phase I to IV, and phase V, in which the phase I is a carbide phase containing, as a constituent element, at least one of the elements of Group IV, V, and VI of the periodic table excluding W, the phase II is a nitride phase containing, as a constituent element, at least one of the elements of Group IV, V, and VI of the periodic table excluding W, the phase III is a carbonitride phase containing, as a constituent element, at least one of the elements of Group IV, Group V, and Group VI of the periodic table excluding W, the phase IV is a carbon phase, the phase V is a composite carbide phase which is represented by a formula WxMyCz.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 8, 2020
    Inventors: Takashi IKEDA, Hajime ISHII, Kenji FUJIMOTO, Naoyuki SATOH, Nobuyuki NAGAYAMA, Koichi MURAKAMI, Takahiro MURAKAMI
  • Publication number: 20190113047
    Abstract: Provided is a TiCx—(Ti—Mo) sliding material having a binder phase made of a Ti—Mo alloy, and a hard phase containing TiCx, wherein the TiCx—(Ti—Mo) sliding material satisfies all the following conditions: (1) a total area of the binder phase and the hard phase is 90% or more of an area of a field of view; (2) a total area of the binder phase is 15% or more and 20% or less of the area of the field of view; (3) in the binder phase, a total area of the binder phase having a diameter equivalent to 10 ?m or more and 50 ?m or less; (4) in the binder phase, a total area of the binder phase having a diameter equivalent to less than 10 ?m; and (5) a Mo concentration in the binder phase is 25 wt % or more and 35 wt % or less.
    Type: Application
    Filed: February 23, 2017
    Publication date: April 18, 2019
    Inventors: Nobuaki ITO, Kenichi SUGIYAMA, Hiroshi YAKUWA, Norio TAKAHASHI, Makoto KOMIYA, Kenji FUJIMOTO
  • Patent number: 9847447
    Abstract: A semiconductor light-emitting element includes a semiconductor stacked body that includes a light emitting layer in which n well layers (where n is, for example, an integer of 1 to 10) formed of Inx (Ga1-yAly)1-xAs (0<X?0.2, 0<y<1), and (n+1) barrier layers formed of Ga1-zAlzAs (0<z<1) and are alternately stacked with the well layer. The light emitting layer in some embodiments can emit light having a peak wavelength in a range of from 700 nm or more to 870 nm or less.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: December 19, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenji Fujimoto, Takanobu Kamakura
  • Patent number: 9666761
    Abstract: A light-emitting device includes a substrate that is capable of transmitting light, a conductive layer that includes a first conductive portion provided on the substrate and a second conductive portion which is provided on the substrate so as to be adjacent to the first conductive portion, The second conductive portion is thinner than the first conductive portion. A light emitting layer is provided on the first conductive portion. A first electrode is provided on the second conductive portion. A second electrode is provided on the light emitting layer. In some embodiments, a backside surface of the substrate may be processed to be optically rough so as to limit internal reflections.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: May 30, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsufumi Kondo, Kenji Fujimoto
  • Publication number: 20170077352
    Abstract: A light-emitting device includes a substrate that is capable of transmitting light, a conductive layer that includes a first conductive portion provided on the substrate and a second conductive portion which is provided on the substrate so as to be adjacent to the first conductive portion, The second conductive portion is thinner than the first conductive portion. A light emitting layer is provided on the first conductive portion. A first electrode is provided on the second conductive portion. A second electrode is provided on the light emitting layer. In some embodiments, a backside surface of the substrate may be processed to be optically rough so as to limit internal reflections.
    Type: Application
    Filed: March 4, 2016
    Publication date: March 16, 2017
    Inventors: Katsufumi KONDO, Kenji FUJIMOTO
  • Patent number: 9517781
    Abstract: An air spring for railroad cars includes an air spring part formed by an upper support on a vehicle body side, an intermediate support arranged therebelow, and a diaphragm made of rubber and extending between the upper support and the intermediate support; and an elastic mechanism b formed by a rubber mass 5 interposed between the intermediate support and a lower support 4 on a bogie side arranged therebelow. The rubber mass 5 has an end in contact with the lower support 4 formed as an enlarged end 5A increasing in diameter as approaching the lower support 4 in a vertical direction. An outer circumferential portion of this enlarged end is fitted in and bonded to an annular groove 12 formed in the lower support 4, and the annular groove 12 has an annular bottom 12A inclined to decrease in height radially outwards to have an annular tapered bottom 12a.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: December 13, 2016
    Assignee: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Kenji Fujimoto
  • Patent number: 9301277
    Abstract: A wireless communication terminal according to an embodiment includes a wireless LAN communication unit, a prediction unit which predicts a moving area of a user, an estimation unit, and a communication control unit. The estimation unit estimates a switching state of a wireless LAN connection in the wireless LAN communication unit, on the basis of a wireless LAN communication environment in the moving area predicted by the prediction unit. The communication unit restricts the wireless LAN connection in the wireless LAN communication unit, on the basis of the switching state estimated by the estimation unit.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: March 29, 2016
    Assignee: YAHOO JAPAN CORPORATION
    Inventors: Kenji Fujimoto, Yasuo Tomine
  • Publication number: 20160064599
    Abstract: A semiconductor light-emitting element includes a semiconductor stacked body that includes a light emitting layer in which n well layers (where n is, for example, an integer of 1 to 10) formed of Inx (Ga1-yAly)1-xAs (0<X?0.2, 0<y<1), and (n+1) barrier layers formed of Ga1-zAlzAs (0<z<1) and are alternately stacked with the well layer. The light emitting layer in some embodiments can emit light having a peak wavelength in a range of from 700 nm or more to 870 nm or less.
    Type: Application
    Filed: August 5, 2015
    Publication date: March 3, 2016
    Inventors: Kenji FUJIMOTO, Takanobu KAMAKURA
  • Patent number: 9263629
    Abstract: According to one embodiment, a semiconductor light emitting device includes a semiconductor laminated body provided on a semiconductor substrate. The semiconductor laminated body includes a light emitting layer. The light emitting layer includes a quantum well structure made by alternately laminating n (an integer of not less than 1) well layers and (n+1) barrier layers and emits light with a peak wavelength of 650 nm to 1000 nm. Each of the well layers has a thickness of smaller than 15 nm. Each of the barrier layers has a thickness of 15 nm to 50 nm.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: February 16, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kenji Fujimoto