Patents by Inventor Koji Nakayama

Koji Nakayama 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: 20250091269
    Abstract: An injection molding machine system includes an injection molding machine, a mold, heater device, and a pressing device. The mold includes a fixed side mold and a slide mold. When the slide mold is clamped at a first mold clamping position, one primary molding cavity is formed by a slide side recessed portion, and one primary molding cavity is formed by a fixed side recessed portion. A pair of primary molded articles, are molded by injection molding. The mold is opened, and bonding end surfaces of the primary molded article remaining in the slide side recessed portion and the primary molded article remaining in the fixed side recessed portion are melted by the heating device. When the slide mold is clamped at a second mold clamping position, a secondary molding cavity is formed by the slide side recessed portion and the fixed side recessed portion.
    Type: Application
    Filed: December 21, 2022
    Publication date: March 20, 2025
    Inventors: Kiyotaka NAKAYAMA, Akihiro NAITO, Takashi UEMURA, Keigo SUSA, Koji MATSUZAKI, Ryuki SAKAMOTO, Shoso NISHIDA
  • Patent number: 12250419
    Abstract: Provided is a live distribution system including at least one processor configured to: acquire a viewer comment input by a viewer of a live distribution service; estimate whether the viewer comment is appropriate based on a first model that has learned a first training comment; determine whether a first score relating to an estimation accuracy of the first model satisfies a predetermined first criterion; avoid, when the first score is determined to satisfy the first criterion, estimation based on a second model that has learned a second training comment; and estimate, when the first score is determined not to satisfy the first criterion, whether the viewer comment is appropriate based on the second model.
    Type: Grant
    Filed: August 31, 2023
    Date of Patent: March 11, 2025
    Assignee: RAKUTEN GROUP, INC.
    Inventors: Yuto Oikawa, Yuki Nakayama, Koji Murakami
  • Patent number: 12249625
    Abstract: A silicon carbide semiconductor device has an active region and a termination structure portion disposed outside of the active region. The silicon carbide semiconductor device includes a semiconductor substrate of a second conductivity type, a first semiconductor layer of the second conductivity type, a second semiconductor layer of a first conductivity type, first semiconductor regions of the second conductivity type, second semiconductor regions of the first conductivity type, a gate insulating film, a gate electrode, a first electrode, and a second electrode. During bipolar operation, a smaller density among an electron density and a hole density of an end of the second semiconductor layer in the termination structure portion is at most 1×1015/cm3.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: March 11, 2025
    Assignees: FUJI ELECTRIC CO., LTD., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeshi Tawara, Tomonori Mizushima, Shinichiro Matsunaga, Kensuke Takenaka, Manabu Takei, Hidekazu Tsuchida, Kouichi Murata, Akihiro Koyama, Koji Nakayama, Mitsuru Sometani, Yoshiyuki Yonezawa, Yuji Kiuchi
  • Patent number: 12247578
    Abstract: A rotary machine includes a rotating shaft, a compressor impeller, a compressor housing, a diffuser plate and an impeller installing portion. The diffuser plate is fixed to the compressor housing and forms a diffuser flow path. The impeller installing portion faces the compressor impeller and is located between the rotating shaft and the diffuser plate. The diffuser plate is located around an outer circumference of the impeller installing portion and is attached to the impeller installing portion.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: March 11, 2025
    Inventors: Koji Sakota, Yuji Sasaki, Shun Nakayama
  • Publication number: 20250065547
    Abstract: An injection molding machine system includes an injection molding machine, a mold, a heating heater device, and a pressing device. When the mold is closed or clamped, two or more primary molding cavities and one or more secondary molding cavities are formed. Primary molded articles are molded through injection molding when injected into the primary molding cavities. The pair of primary molded articles are placed in the secondary molding cavity, bonding end surfaces are melted by the heating heater device, and the mold is closed or clamped. When the pair of primary molded articles are pressed together by the pressing device, the primary molded articles are fused to each other to form a molded article.
    Type: Application
    Filed: December 21, 2022
    Publication date: February 27, 2025
    Inventors: Kiyotaka NAKAYAMA, Akihiro NAITO, Takashi UEMURA, Keigo SUSA, Koji MATSUZAKI, Ryuki SAKAMOTO, Shoso NISHIDA
  • Publication number: 20250050549
    Abstract: A mold includes a guide pin configured to guide mold closing. The guide pin is housed in a guide pin housing hole formed in a parting line and is configured to be driven by a predetermined drive mechanism. The guide pin is configured to protrude its tip end from the parting line and to retract into the guide pin housing hole by the drive mechanism.
    Type: Application
    Filed: August 7, 2024
    Publication date: February 13, 2025
    Inventors: Kiyotaka NAKAYAMA, Akihiro NAITO, Takashi UEMURA, Koji MATSUZAKI, Ryuki SAKAMOTO, Shoso NISHIDA
  • Patent number: 12219876
    Abstract: A method for producing a piezoelectric actuator including forming a vibration plate, forming a first electrode on the vibration plate, forming a piezoelectric layer on the first electrode, and forming a second electrode on the piezoelectric layer, wherein the forming the vibration plate has a single layer forming step including forming a metal layer containing zirconium by a gas phase method, and forming a metal oxide layer by firing the metal layer, the single layer forming step is repeated, thereby forming the vibration plate in which the metal oxide layers are stacked, and the metal oxide layer has a thickness less than 200 nm.
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: February 4, 2025
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Harunobu Koike, Takanori Aimono, Masao Nakayama, Motoki Takabe, Koji Sumi, Yasuhiro Itayama, Toshihiro Shimizu
  • Patent number: 12208759
    Abstract: To improve protection performance for a pedestrian colliding with a front portion of a traveling vehicle, a front bumper includes a bumper fascia, a front grill, and decorative member. The disposition position and shape of a bumper reinforcement are set such that the bumper reinforcement is positioned inside an opening of the bumper fascia in a front view. Cross members are arranged at higher and lower positions than the decorative member and extend toward a vehicle-width-direction outer side beyond the bumper reinforcement.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: January 28, 2025
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takuma Inami, Nobuyuki Nakayama, Hiroyuki Baba, Mitsuru Wakabayashi, Koji Miyamoto
  • Patent number: 12202548
    Abstract: To suppress damage on a bonnet at light collision, a vehicle-body structure includes rear-portion crush cans that perform compressive deformation when a first predetermined load is applied, and front-portion crush cans that perform compressive deformation when a second predetermined load smaller than the first predetermined load is applied. A front portion of a bonnet is positioned on a vehicle rear side of front portions of the rear-portion crush cans.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: January 21, 2025
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takuma Inami, Nobuyuki Nakayama, Hiroyuki Baba, Mitsuru Wakabayashi, Koji Miyamoto, Masaki Motoki, Manabu Tatsuda
  • Publication number: 20240212517
    Abstract: A teacher data editing support system includes a determination unit that receives teacher data including sensitive attribution as a variable that potentially causes discrimination, a feature as a variable to be used for prediction, and a correct answer, and calculates contribution as an index indicating contribution of the sensitive attribution to the correct answer, a display unit that visually presents evaluation information indicating a relationship between a level of changing the correct answer in the teacher data and a level of deviation of the correct answer from an initial value or a discrimination level based on the contribution, and an editing unit that accepts designation of how much the correct answer is changed, changes the correct answer in the teacher data in response to the designation, and outputs the changed teacher data.
    Type: Application
    Filed: August 30, 2023
    Publication date: June 27, 2024
    Inventors: Yuxin LIANG, Masashi EGI, Koji NAKAYAMA
  • Patent number: 12013347
    Abstract: Super continuum light having a continuous spectrum over at least 1100 to 1300 nm is emitted from a pulsed light source, is pulse-stretched by a stretching element such that a relationship between a wavelength and an elapsed time in one pulse is one to one, and is radiated to a product. The light transmitted through the product is received by a light receiver, and output data is input to the determination unit. A quality determination program of the determination unit calculates an absorption spectrum from the output data, quantifies the absorption spectrum by chemometrics, and compares the absorption spectrum with a reference value to determine quality. The product determined to be a defective product is excluded by an exclusion mechanism.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: June 18, 2024
    Assignees: USHIO DENKI KABUSHIKI KAISHA, TOWA PHARMACEUTICAL CO., LTD.
    Inventors: Go Yamada, Aya Ota, Koji Nakayama
  • Publication number: 20240193478
    Abstract: It is possible to effectively and efficiently add training data. A training data evaluation system includes an uncertainty calculation unit configured to calculate, based on a prediction value obtained from a machine learning model using evaluation data for evaluating a shortage of training data as an input and a correct answer for the evaluation data, a data shortage degree representing a training data shortage degree for each piece of the evaluation data; a target selection unit configured to extract target data, which is data to be added to the training data, based on a predetermined selection rule and the data shortage degree; and a tendency analysis planning unit configured to specify a tendency of the target data based on a predetermined analysis rule and specify a property of the training data to be added based on the tendency of the target data.
    Type: Application
    Filed: August 9, 2023
    Publication date: June 13, 2024
    Applicant: Hitachi Solutions, Ltd.
    Inventors: Yuxin LIANG, Masashi EGI, Koji NAKAYAMA
  • Publication number: 20230343941
    Abstract: A lithium-ion secondary battery negative electrode mixture includes a conductive additive and porous amorphous silicon particles including an amorphous silicon phase. The porous amorphous silicon particles have a lamellar structure including lamellar protrusions having an average thickness in a range of 1 nm or more and 200 nm or less, a columnar structure including columnar protrusions having an average diameter in a range of 1 nm or more and 100 nm or less, or a co-continuous structure including the lamellar protrusions and the columnar protrusions.
    Type: Application
    Filed: September 24, 2021
    Publication date: October 26, 2023
    Inventors: Koji NAKAYAMA, Junpei OKADA
  • Patent number: 11536625
    Abstract: A tube leak detection device for detecting leak of at least one tube of a heat exchanger which increases a temperature of a liquid by heat exchange between the liquid flowing inside the at least one tube and a fluid flowing outside the at least one tube includes: an inlet opening-and-closing valve and an outlet opening-and-closing valve disposed at an inlet end and an outlet end of the at least one tube, respectively; and a pressure detection member for detecting a pressure inside the at least one tube between the inlet opening-and-closing valve and the outlet opening-and-closing valve.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: December 27, 2022
    Assignee: Mitsubishi Heavy Industries Engineering, Ltd.
    Inventors: Kaori Yoshida, Ayumu Yamazaki, Rikio Kan, Kiyotaka Kunimune, Koji Nakayama
  • Publication number: 20220178848
    Abstract: Super continuum light having a continuous spectrum over at least 1100 to 1300 nm is emitted from a pulsed light source, is pulse-stretched by a stretching element such that a relationship between a wavelength and an elapsed time in one pulse is one to one, and is radiated to a product. The light transmitted through the product is received by a light receiver, and output data is input to the determination unit. A quality determination program of the determination unit calculates an absorption spectrum from the output data, quantifies the absorption spectrum by chemometrics, and compares the absorption spectrum with a reference value to determine quality. The product determined to be a defective product is excluded by an exclusion mechanism.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 9, 2022
    Applicants: Ushio Denki Kabushiki Kaisha, TOWA PHARMACEUTICAL CO., LTD.
    Inventors: Go YAMADA, Aya OTA, Koji NAKAYAMA
  • Patent number: 11333348
    Abstract: An exhaust gas cooler includes: a steam drum containing first water; an economizer for heat exchange between exhaust gas and the first water supplied from the steam drum; and a feedwater pipe for supplying the first water with second water having a lower temperature than the first water. The exhaust gas cooler is configured such that the first water flowing out of the economizer is introduced into the steam drum. The second water is divided and supplied to the first water flowing out of the economizer and the first water flowing into the economizer.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 17, 2022
    Assignee: Mitsubishi Heavy Industries Engineering, Ltd.
    Inventors: Kaori Yoshida, Moritoshi Murakami, Ayumu Yamazaki, Rikio Kan, Kiyotaka Kunimune, Koji Nakayama
  • Publication number: 20220123112
    Abstract: A silicon carbide semiconductor device has an active region and a termination structure portion disposed outside of the active region. The silicon carbide semiconductor device includes a semiconductor substrate of a second conductivity type, a first semiconductor layer of the second conductivity type, a second semiconductor layer of a first conductivity type, first semiconductor regions of the second conductivity type, second semiconductor regions of the first conductivity type, a gate insulating film, a gate electrode, a first electrode, and a second electrode. During bipolar operation, a smaller density among an electron density and a hole density of an end of the second semiconductor layer in the termination structure portion is at most 1×1015/cm3.
    Type: Application
    Filed: November 30, 2021
    Publication date: April 21, 2022
    Applicants: FUJI ELECTRIC CO., LTD., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeshi TAWARA, Tomonori MIZUSHIMA, Shinichiro MATSUNAGA, Kensuke TAKENAKA, Manabu TAKEI, Hidekazu TSUCHIDA, Kouichi MURATA, Akihiro KOYAMA, Koji NAKAYAMA, Mitsuru SOMETANI, Yoshiyuki YONEZAWA, Yuji KIUCHI
  • Publication number: 20210371288
    Abstract: A porous amorphous silicon which enables improvement in battery performances such as charge/discharge efficiency and battery capacity when used as the anode material; a method for producing a porous amorphous silicon, capable of producing a porous amorphous silicon composed entirely of amorphous silicon at relatively low cost in a short time; and a secondary battery using the porous amorphous silicon as the anode material. A molten metal containing metal and silicon is cooled at a cooling rate of 106 K/sec or more to form an eutectic alloy including the metal and the silicon, and then the metal is selectively eluted from the eutectic alloy with an acid or an alkali to obtain a porous amorphous silicon. The porous amorphous silicon has a lamellar or columnar structure having a mean lamellar diameter or a mean column diameter of 1 nm to 100 nm.
    Type: Application
    Filed: September 13, 2019
    Publication date: December 2, 2021
    Applicant: TOHOKU UNIVERSITY
    Inventors: Junpei OKADA, Koji NAKAYAMA, Takeshi WADA
  • Publication number: 20210329915
    Abstract: Provided is an absorption promotor for causing a flying-insect pest repellent fragrance-containing composition with a high repellent effect to be rapidly absorbed into an elastomer molded body. The absorption promotor for causing a flying-insect pest repellent fragrance-containing composition into an elastomer molded body having a hardness of 60 degrees or less includes d-limonene and/or 1,8-cineole as an active ingredient. The absorption promotor is blended preferably in a range of 2.0 to 65% by mass and more preferably 10 to 45% by mass in the flying-insect pest repellent fragrance-containing composition.
    Type: Application
    Filed: September 18, 2019
    Publication date: October 28, 2021
    Inventors: Ryoko UKITA, Tomomi IWAMOTO, Taiji ONO, Yumi KAWAJIRI, Koji NAKAYAMA
  • Publication number: 20210315209
    Abstract: An outdoor aerosol agent for insect pest control useful for insect pests with reduced sensitivity to pyrethroid-based insecticidal components, particularly mosquitoes, having excellent adhesion to surfaces to be treated and effectiveness of formation of a barrier space without causing issues with VOC regulations. The aerosol agent is obtained by filling a pressure-resistant container with an aerosol stock solution and a propellant, wherein VOC content in the aerosol stock solution is 30% by mass or less, the aerosol stock solution including: (a) 0.01 to 3.0% by mass of a room-temperature volatile pyrethroid-based insecticidal component that has a vapor pressure of 2×10?4 to 1×10?2 mmHg at 30° C.; (b) 0.5 to 10% by mass of a glycol ether compound having a boiling point of 160 to 320° C.; (c) 0.2 to 5.0% by mass of a nonionic surfactant and/or an anionic surfactant; and (d) the remainder % by mass being water.
    Type: Application
    Filed: August 6, 2019
    Publication date: October 14, 2021
    Inventors: Yuya HARADA, Yoko KOBAYASHI, Yumi KAWAJIRI, Koji NAKAYAMA