Patents by Inventor Kenji Fujiwara

Kenji Fujiwara 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: 20200370490
    Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa KATOH, Takahiko FUJIWARA, Kenji IGAWA, Kentaro MINEO
  • Publication number: 20200370491
    Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa KATOH, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
  • Publication number: 20200370485
    Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
  • Publication number: 20200370489
    Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa KATOH, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
  • Publication number: 20200370488
    Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa KATOH, Takahiko FUJIWARA, Kenji IGAWA, Kentaro MINEO
  • Publication number: 20200370486
    Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa KATOH, Takahiko FUJIWARA, Kenji IGAWA, Kentaro MINEO
  • Publication number: 20200370487
    Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa KATOH, Takahiko FUJIWARA, Kenji IGAWA, Kentaro MINEO
  • Publication number: 20200366111
    Abstract: A battery system includes a battery pack including a plurality of cells, and an ECU. The ECU calculates a current distribution in each cell using a ladder circuit network model, the ladder circuit network model being obtained by geometrically modeling an interior of the cell using a plurality of resistance elements and a plurality of power storage elements. The ECU calculates the current distribution in the cell by applying, to the ladder circuit network model, a resistance distribution in the cell calculated based on a salt concentration distribution in the cell.
    Type: Application
    Filed: May 5, 2020
    Publication date: November 19, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mai FUJIWARA, Ryo KANADA, Kenji TAKAHASHI
  • Patent number: 10830862
    Abstract: A position measuring system includes s server and radio wave emitting stations positioned at different locations across a position measuring area. A storage device stores, for each of the plurality of radio wave emitting stations, a beacon identifier that uniquely identifies the radio wave emitting station and a first threshold time. A processor receives, from a portable device, reception information including a reception time indicating when the portable device received a signal from one of the radio wave emitting stations. The processor determines, based on the received signal strength identifier, a position of the reception station in the position measuring area. The processor determines an operation state of the radio wave emitting station corresponding to the received signal. A display device displays information indicating the determined operation state of each of the plurality of radio wave emitting stations.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: November 10, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Shigeo Uchida, Akihiko Fujiwara, Kenji Ito
  • Publication number: 20200273975
    Abstract: A nitride semiconductor device includes an electron transit layer (103) that is formed of a nitride semiconductor, an electron supply layer (104) that is formed on the electron transit layer (103), that is formed of a nitride semiconductor whose composition is different from the electron transit layer (103) and that has a recess (109) which reaches the electron transit layer (103) from a surface, a thermal oxide film (111) that is formed on the surface of the electron transit layer (103) exposed within the recess (109), a gate insulating film (110) that is embedded within the recess (109) so as to be in contact with the thermal oxide film (111), a gate electrode (108) that is formed on the gate insulating film (110) and that is opposite to the electron transit layer (103) across the thermal oxide film (111) and the gate insulating film (110), and a source electrode (106) and a drain electrode (107) that are provided on the electron supply layer (104) at an interval such that the gate electrode (108) intervene
    Type: Application
    Filed: May 12, 2020
    Publication date: August 27, 2020
    Inventors: Kenji YAMAMOTO, Tetsuya FUJIWARA, Minoru AKUTSU, Ken NAKAHARA, Norikazu ITO
  • Publication number: 20200233037
    Abstract: According to one embodiment, an evaluation device for an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry acquires data items including an amount of charge and a voltage value measured in a measurement period from the energy storage device, the energy storage device being charge-discharge-controlled according to charge-discharge command values. The second processing circuitry generates a representative data item of voltage values for amounts of charge, based on the data items acquired for the measurement period; and evaluates a degradation state of the energy storage device, based on a relative change between a plurality of the representative data items corresponding to a plurality of the measurement periods.
    Type: Application
    Filed: September 11, 2019
    Publication date: July 23, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Takahiro YAMAMOTO, Hisaaki Tatano, Kenichi Fujiwara, Masatake Sakuma, Kaoru Koiwa, Yasuhiro Ogura, Takenori Kobayashi, Kenji Mitsumoto
  • Publication number: 20200217896
    Abstract: According to one embodiment, a device for evaluating an energy storage device includes first processing circuitry and second processing circuitry. The first processing circuitry detects a plurality of times at which an amount of charge of the energy storage device satisfies a threshold condition, based on measurement data on the energy storage device in operation, selects a plurality of time intervals, calculates a charge-discharge efficiency in each of the time intervals based on charge-discharge command values belonging to the time interval, and divides a set of the charge-discharge efficiencies into a plurality of clusters and generates characteristic information on the clusters based on at least one of the measurement data and the charge-discharge command values. The second processing circuitry generates output data for displaying: transition data indicating transition of the charge-discharge efficiency belonging to the cluster; and characteristic information on the cluster.
    Type: Application
    Filed: September 11, 2019
    Publication date: July 9, 2020
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Hisaaki Hatano, Takahiro Yamamoto, Kenichi Fujiwara, Masatake Sakuma, Takenori Kobayashi, Yasuhiro Ogura, Kenji Mitsumoto
  • Publication number: 20200200108
    Abstract: A control device comprising a first exhaust temperature calculation part calculating a temperature of exhaust flowing into a PM trapping device as a first exhaust temperature, a second exhaust temperature calculation part calculating a temperature of exhaust flowing out from the PM trapping device as a second exhaust temperature, a rate of change over time calculation part calculating a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and a judgment part judging if the PM trapping device is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Application
    Filed: December 23, 2019
    Publication date: June 25, 2020
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
  • Publication number: 20200189917
    Abstract: Provided is a method for producing an activated carbon with which calcination and molding can be homogeneously performed and an activated carbon of stable quality can be produced. The method includes a plasticizing and densifying step of plasticizing and densifying a mixture of a wooden material and a phosphoric acid compound in a single-screw or twin-screw extruder-kneader under pressurizing and heating conditions until the loss on heating at 140° C. for 30 minutes becomes between 10 mass % and 25 mass %, exclusive, to thereby obtain a carbonaceous material; an adjustment step of heat-treating the carbonaceous material after the plasticizing and densifying step until the loss on heating at 140° C. for 30 minutes becomes between 3 mass % and 12 mass %, exclusive; and an activation treatment step of activating the carbonaceous material after the plasticizing and densifying step under heating conditions at a temperature between 400° C. and 600° C., inclusive.
    Type: Application
    Filed: July 24, 2017
    Publication date: June 18, 2020
    Inventors: Kenji Seki, Hiromi Fujiwara, Yoshinori Iwashima
  • Patent number: 10686064
    Abstract: A nitride semiconductor device includes an electron transit layer (103) that is formed of a nitride semiconductor, an electron supply layer (104) that is formed on the electron transit layer (103), that is formed of a nitride semiconductor whose composition is different from the electron transit layer (103) and that has a recess (109) which reaches the electron transit layer (103) from a surface, a thermal oxide film (111) that is formed on the surface of the electron transit layer (103) exposed within the recess (109), a gate insulating film (110) that is embedded within the recess (109) so as to be in contact with the thermal oxide film (111), a gate electrode (108) that is formed on the gate insulating film (110) and that is opposite to the electron transit layer (103) across the thermal oxide film (111) and the gate insulating film (110), and a source electrode (106) and a drain electrode (107) that are provided on the electron supply layer (104) at an interval such that the gate electrode (108) intervene
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: June 16, 2020
    Assignee: ROHM CO., LTD.
    Inventors: Kenji Yamamoto, Tetsuya Fujiwara, Minoru Akutsu, Ken Nakahara, Norikazu Ito
  • Publication number: 20200162838
    Abstract: An information providing device includes a receiving unit configured to receive identification information of a first user and a character string from a terminal, an extracting unit configured to extract place information associated with the character string from action histories of a plurality of persons, a first identification unit configured to identify a second user that the first user follows by consulting information that represents a relationship between users on social media, an adjusting unit configured to, of the extracted place information, raise a priority of the place information contained in the action history of the second user as compared to the other place information; and a sending unit configured to send the extracted place information and the priority of the place information to the terminal.
    Type: Application
    Filed: October 18, 2019
    Publication date: May 21, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryota OKUBI, Keiko SUZUKI, Ryotarou FUJIWARA, Kenji FUJIKI, Makoto HONDA, Chikage KUBO
  • Publication number: 20200133205
    Abstract: A timepiece movement capable of suppressing generation of malfunction of a hand is provided. The movement includes an indicator hand wheel which is provided so as to be rotatable and to which an indicator hand is mounted; an indicator hand stepping motor rotating and driving the indicator hand wheel in both directions; an hour wheel provided so as to be rotatable around a first rotation axis different from a rotation axis of the indicator hand wheel and having a first shaft portion which extends along the first rotation axis and on the outer peripheral surface of which there is provided a contact portion that the indicator hand can abut, with the distance of the contact portion from the first rotation axis varying in accordance with a position in the peripheral direction around the first rotation axis; and an hour hand stepping motor rotating and driving the hour wheel and provided separately from the indicator hand stepping motor.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 30, 2020
    Inventors: TOSHIYUKI FUJIWARA, Kenji OGASAWARA
  • Patent number: 10596484
    Abstract: A packing has a plurality of sheet materials spaced and arranged in parallel, and liquid flows along the flat surface thereof in a standing use state. Each sheet material has at least one member group including a plurality of support members arranged such that the upper end of the uppermost support member corresponds to the upper end of the sheet material and the lower end of the lowermost support member corresponds to the lower end of the sheet material. Each support member has a pair of support walls parallel to the liquid flow direction and perpendicular to the sheet material surface, and a bridging part connecting the support walls. A sandwiching structure is formed that one sheet material is held by at least one support member attached thereto and at least one support member attached to an adjacent sheet material, and it extends linearly through the plurality of sheet materials.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: March 24, 2020
    Assignee: IHI Corporation
    Inventors: Yoshiyuki Iso, Jian Huang, Mariko Saga, Shinsuke Matsuno, Hiroyuki Uchida, Naoki Fujiwara, Kenji Takano, Kenji Tokuda, Shiko Nakamura
  • Publication number: 20200081341
    Abstract: A novel carboxylic acid iodonium salt and a resist composition comprising the same as a quencher are provided. When resist composition is processed by photolithography using KrF or ArF excimer laser, EB or EUV, there is formed a resist pattern which is improved in rectangularity, MEF, LWR, and CDU.
    Type: Application
    Filed: September 5, 2019
    Publication date: March 12, 2020
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Takayuki Fujiwara, Masaki Ohashi, Kazuhiro Katayama, Kenji Yamada
  • Patent number: 10585191
    Abstract: An ultrasonic sensor in the invention includes an ultrasonic transmitter, an ultrasonic receiver, and a detector. The ultrasonic transmitter transmits pulse-shaped ultrasonic waves to a thin plate to excite the thin plate. The ultrasonic receiver receives direct waves and reflected waves among the ultrasonic waves propagating in the thin plate excited by the pulse-shaped ultrasonic waves, the direct waves propagating only in the thin plate, and the reflected waves radiating outward, then reflected by the object, and returning to the thin plate. The detector detects the object present near the thin plate on the basis of a difference between a time at which the ultrasonic receiver receives the direct waves and a time at which the ultrasonic receiver receives the reflected waves.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: March 10, 2020
    Assignees: NEW JAPAN RADIO CO., LTD., AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Nobumitsu Hirano, Hajime Fujiwara, Kenji Takebuchi, Hiroyuki Kuchiji, Akira Seshimoto, Kimiyoshi Yamasaki, Kenichi Taguchi, Masaya Otokawa