Patents by Inventor Koji Takahashi

Koji Takahashi 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: 12291546
    Abstract: Provided is a phosphonium compound represented by Formula (I): in Formula (I), R1, R2, and R3 are independently from each other, an alkyl group or an aryl group, the alkyl group is a substituted or unsubstituted, linear or branched alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted cyclic alkyl group having 5 to 20 carbon atoms, the aryl group is a substituted or unsubstituted aryl group having 6 to 20 carbon atoms; X is a reactive group having a hydrazide group, a halide group, a pseudohalide group, or a thioester group; and Y? is an anion having a total charge of ?1, or Y? is absence.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: May 6, 2025
    Assignee: JEOL Ltd.
    Inventors: Seketsu Fukuzawa, Koji Takahashi, Yoshiyuki Itoh, Masaki Takiwaki, Shugo Tsuda, Masayoshi Mochizuki, Taku Yoshiya
  • Publication number: 20250140470
    Abstract: A coupled inductor includes: a magnetic body; a first conductor provided at least partially inside the magnetic body; and a second conductor provided at least partially inside the magnetic body and coupled to the first conductor. The magnetic body includes: a first surface and a second surface facing away from each other; and a third surface and a fourth surface facing away from each other and orthogonal to the first surface and the second surface. The first conductor includes: a first terminal provided at the first surface; and a second terminal provided at the second surface. The second conductor includes: a third terminal provided at the third surface; and a fourth terminal provided at the fourth surface.
    Type: Application
    Filed: December 15, 2022
    Publication date: May 1, 2025
    Inventors: Hong-An SHIH, Kenichi ASANUMA, Koji TAKAHASHI
  • Publication number: 20250138443
    Abstract: An electrophotographic photosensitive member includes a support, an undercoat layer formed directly on the support, and a photosensitive layer formed on the undercoat layer, wherein when an ionization potential of the undercoat layer is represented by IPu, the IPu is 6.0 eV or higher, when an ionization potential of the support is represented by IPs, the IPs is lower than the IPu, the undercoat layer contains a compound (?), when an ionization potential of the compound (?) is represented by IP?, the IP? is 5.0 eV or higher and 5.4 eV or lower, and the IPs and the IP? satisfy the following relational expression (1): IPs ? IP ? ? - 1. .
    Type: Application
    Filed: October 21, 2024
    Publication date: May 1, 2025
    Inventors: KOJI TAKAHASHI, MOTOYA YAMADA, SHUBUN KUJIRAI, YASUO KOJIMA
  • Publication number: 20250123289
    Abstract: A derivatization reagent comprising a compound represented by Formula (1): RR?CO??(1), In Formula (1), R and R? are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 11 carbon atoms, or a substituted or unsubstituted aryl group having 1 to 11 carbon atoms.
    Type: Application
    Filed: October 10, 2024
    Publication date: April 17, 2025
    Inventors: Seketsu Fukuzawa, Masaki Takiwaki, Koji Takahashi, Yoshikuni Kikutani
  • Patent number: 12277254
    Abstract: A hardware trojan detection method is provided including an input and output updating step of updating input and output values of all logic cells by performing computations according to logical expressions of all logic cells included in a netlist to be verified and a detection step of performing hardware trojan detection based on a comparison result of the updated input and output values and a threshold.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: April 15, 2025
    Assignees: Toshiba Information Systems (JAPAN) Corporation, Waseda University
    Inventors: Shinichi Nagata, Koji Takahashi, Nozomu Togawa, Masaru Oya
  • Publication number: 20250083237
    Abstract: A first flank face includes a first front flank face portion and a first rear flank face portion. A second flank face includes a second front flank face portion and a second rear flank face portion. A ridgeline between the first front flank face portion and the first rear flank face portion is defined as a first ridgeline. A ridgeline between the second front flank face portion and the second rear flank face portion is defined as a second ridgeline. When viewed in the axial direction, a distance between the first ridgeline and the second ridgeline in a direction perpendicular to the first ridgeline is greater than 0 mm and less than or equal to 0.03 mm.
    Type: Application
    Filed: January 12, 2023
    Publication date: March 13, 2025
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventor: Koji TAKAHASHI
  • Publication number: 20250084918
    Abstract: An output gear of the differential apparatus includes a gear member and an operating member capable of being integrally rotatably engaged with the gear member via the cam portion. The cam portion includes a gear protrusion on the gear member, an operating protrusion on the operating member, and cam surfaces respectively provided on opposing surfaces of the gear protrusion and the operating protrusion. A corner portion on a tip side of at least one of the gear protrusion and the operating protrusion is provided with a retreating portion.
    Type: Application
    Filed: July 29, 2024
    Publication date: March 13, 2025
    Inventors: Isao Hirota, Noboru Uchida, Yousuke Kawai, Daisuke Umetsu, Koji Takahashi, Koki Yamamoto, Naoki Hiraga
  • Patent number: 12248274
    Abstract: Provided is an electrophotographic photosensitive member that can suppress the surface direction unevenness of an output image throughout repeated image formation. The electrophotographic photosensitive member is an electrophotographic photosensitive member including a support having a cylindrical shape and a photosensitive layer formed on the support, wherein the support contains at least one of aluminum or an aluminum alloy, and wherein when an area at the maximum frequency calculated from the area distribution curve of the aluminum crystal grains of the surface of the support is represented by A (?m2) and the half-width of the highest peak in the area distribution curve is represented by B (?m2), the support satisfies the following formula (1): B/A?1.0??(1).
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: March 11, 2025
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Motoya Yamada, Koji Takahashi, Masayuki Shinozuka
  • Publication number: 20250068002
    Abstract: In a multi-pulse light source, a dispersion compensation unit includes a spectroscopic element configured to spectrally separate a plurality of wavelength components, a separation optical element that guides a first optical pulse group including one or more wavelength components among a plurality of wavelength components, and a second optical pulse group including one or more wavelength components different from the one or more wavelength components included in the first optical pulse group among the plurality of wavelength components to optical paths different from each other, a first spatial light modulator on which the first optical pulse group is incident and which compensates dispersion for each wavelength component with respect to the first optical pulse group, and a second spatial light modulator on which the second optical pulse group is incident and which compensates dispersion for each wavelength component with respect to the second optical pulse group.
    Type: Application
    Filed: January 11, 2023
    Publication date: February 27, 2025
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Ryu NIIGAKI, Koji TAKAHASHI, Kyohei SHIGEMATSU
  • Patent number: 12222166
    Abstract: A heat-transfer member (1) is used in a cooling system in which an alcohol serves as a coolant. The heat-transfer member (1) has: a heat-receiving surface (11) configured such that it can receive heat from a heat-generating body; and a heat-dissipating surface (12) configured such that it can dissipate, to the coolant, the heat received at the heat-receiving surface (11). The heat-dissipating surface (12) has a plurality of pores (121) whose average pore diameter is 5 nm or more and 1,000 nm or less. A cooling system can be configured by causing the coolant to contact the heat-dissipating surface (12) of the heat-transfer member (1).
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: February 11, 2025
    Assignees: Kyushu University, National University Corporation, UACJ Corporation
    Inventors: Yasuyuki Takata, Koji Takahashi, Biao Shen, Junji Nunomura, Yoichiro Bekki, Akihiro Fukatsu
  • Patent number: 12199213
    Abstract: An image display device includes a drive circuit substrate, micro LED elements, and a wavelength conversion layer that converts excitation light emitted from the micro LED elements and that emits converted long-wavelength light to a side opposite to the drive circuit substrate, the micro LED elements and the wavelength conversion layer being sequentially stacked on the drive circuit substrate. The micro LED elements include a first multilayer film that reflects the long-wavelength light converted by the wavelength conversion layer.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: January 14, 2025
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Katsuji Iguchi, Koji Takahashi, Hidenori Kawanishi, Peter John Roberts, Nathan Cole
  • Patent number: 12181832
    Abstract: An electrophotographic photosensitive member having: a support with a cylindrical shape; and a photosensitive layer, in which the support has a surface formed of Al and/or an Al alloy, and the surface of the support includes Al crystal grains having (?) plane having {001} orientation of ?15° or more and less than +15°, (?) plane having {101} orientation of ?15° or more and less than +15°, and (?) plane having {111} orientation of ?15° or more and less than +15°, a ratio of an area occupied by Al crystal grains having (?) to the total area of the surface of the support is 10% or less, and a ratio of an area occupied by any one of Al crystal grains having (?) and Al crystal grains having (?) is 60% or more.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: December 31, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koji Takahashi, Masayuki Shinozuka, Motoya Yamada
  • Publication number: 20240393710
    Abstract: An image forming apparatus includes an image supporter, a charger, a toner image forming device, a transfer device, a detector, and a controller. The charger includes a charging member adjacent to the surface of the image supporter, and applies a voltage obtained by superimposing an AC voltage on a DC voltage to a charging member to thereby homogenously charge the surface of the image supporter. The toner image forming device forms a latent image provided to the image supporter and then develop the latent image. The transfer device transfers the toner image to a transfer body. The detector detects a resistance value of the transfer device. The controller estimates a saturation value of a surface potential of the image supporter, and then sets a peak value of the AC voltage which is applied by the charger to the charging member, in accordance with the saturation value estimated.
    Type: Application
    Filed: February 15, 2024
    Publication date: November 28, 2024
    Inventor: Koji Takahashi
  • Patent number: 12123802
    Abstract: In a measurement method, light inputs with the same center wavelength and different properties are performed on a light transmission medium, and a measured value of an intensity spectrum of each of light outputs is acquired. An error between the measured value and an estimated value of the intensity spectrum calculated based on a theoretical relation between an intensity spectrum and a phase spectrum of each of the light inputs, a nonlinear coefficient and a wavelength dispersion value of the light transmission medium, and the intensity spectrum of each of the light outputs is calculated while changing the nonlinear coefficient and the wavelength dispersion value. Further, the nonlinear coefficient and the wavelength dispersion value are determined based on a difference, in a relation between the nonlinear coefficient and the wavelength dispersion value and the error, between the light inputs.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: October 22, 2024
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Koji Takahashi, Ryu Niigaki
  • Publication number: 20240310769
    Abstract: According to one embodiment, an image forming apparatus includes an image bearing member, a charging roller, an exposure unit, a developing device, a transfer roller, and a control unit. The charging roller charges the image bearing member. The exposure unit forms an electrostatic latent image on the surface of the image bearing member. The developing device develops the electrostatic latent image formed on the surface of the image bearing member into a toner image. The transfer roller transfers the toner image from the image bearing member. The control unit detects a resistance detection voltage of the transfer roller as a voltage for detecting that there is an abnormality in the image bearing member.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 19, 2024
    Inventor: Koji Takahashi
  • Patent number: 12093653
    Abstract: A moral analysis unit extracts, as a moral expression word, a word matching a morality-related word related to morality from acquired data which is text data on the basis of a moral foundations dictionary which is dictionary data defining the morality-related word. A processed data display unit analyzes the moral value of the acquired data by using the moral expression word.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: September 17, 2024
    Assignee: HITACHI, LTD.
    Inventors: Koji Takahashi, Yasuto Nishiwaki, Masataka Oshima, Hiromasa Nakashima
  • Patent number: 12093807
    Abstract: A neural network not requiring massive changes in configuration when changing the number of stages (number of levels) of the neural network. This neural network is provided with at least one neuron core 10 performing an analog multiply-accumulate operation and a weight-value-supply control unit 30 supplying the weight value to the neuron core 10. This neural network is subjected to control processing by a control-processor unit 40 controlling the supply of the weight value from said weight-value-supply control unit 30 in synchronization with the timing of the analog multiply-accumulate operation of the neuron core 10, and processing the data output from the neuron core 10 at every analog multiply-accumulate operation performed by said neuron core as serial data and/or parallel data.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: September 17, 2024
    Assignees: Kabushikiki Kaisha Toshiba, Toshiba Information Systems (Japan) Corporation
    Inventors: Takao Marukame, Kazuo Ishikawa, Junichi Sugino, Toshimitsu Kitamura, Yutaka Tamura, Koji Takahashi
  • Patent number: 12072656
    Abstract: According to one embodiment, an image forming apparatus includes an image bearing member, a charging roller, an exposure unit, a developing device, a transfer roller, and a control unit. The charging roller charges the image bearing member. The exposure unit forms an electrostatic latent image on the surface of the image bearing member. The developing device develops the electrostatic latent image formed on the surface of the image bearing member into a toner image. The transfer roller transfers the toner image from the image bearing member. The control unit detects a resistance detection voltage of the transfer roller as a voltage for detecting that there is an abnormality in the image bearing member.
    Type: Grant
    Filed: March 16, 2023
    Date of Patent: August 27, 2024
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Koji Takahashi
  • Publication number: 20240279416
    Abstract: The present invention provides an antifog-film-attached resin substrate that includes: a resin substrate; and an antifog film on a surface of the resin substrate, wherein the antifog film includes: a silane coupling agent and/or a cross-linked structure derived from the silane coupling agent; a water-absorbing polymer; a polyether-modified siloxane; and a C2-C8 diol. The silane coupling agent includes: a silane coupling agent A; and a silane coupling agent B and/or a silane coupling agent C. The silane coupling agent A has an amino group, a silicon atom, and a C1-C3 hydrocarbon group bonded to the amino group and the silicon atom, the silane coupling agent B has an amino group, a silicon atom, and a C4 or more hydrocarbon group bonded to the amino group and the silicon atom, and the silane coupling agent C is a polymer having a plurality of amino groups.
    Type: Application
    Filed: June 9, 2022
    Publication date: August 22, 2024
    Inventors: Kiyomi HAYASHI, Kazuaki OYA, Koji TAKAHASHI
  • Publication number: 20240279486
    Abstract: The present invention provides an antifog-film-attached transparent article for security cameras that includes: a transparent base; and an antifog film on a surface of the transparent base, wherein the antifog film includes: at least one selected from the group consisting of a silane coupling agent and a cross-linked structure derived from the silane coupling agent; a water-absorbing polymer, a polyether-modified siloxane; and a C2-C8 diol.
    Type: Application
    Filed: June 9, 2022
    Publication date: August 22, 2024
    Inventors: Kazuaki OYA, Kiyomi HAYASHI, Koji TAKAHASHI