Patents by Inventor Kohei Nakamura

Kohei Nakamura 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: 11370168
    Abstract: A 3D modeling device that forms a 3D object includes: a stage; a nozzle through which a fused material is ejected; a build plate disposed on the stage, the build plate receiving the fused material ejected through the nozzle to build the 3D object on the build plate; and a plasticizing member configured to plasticize a thermoplastic material to form the fused material. The plasticizing member includes: a flat screw having a grooved surface in which a groove is provided, the groove extending in a helical shape; a screw-facing piece having a communication path and a screw-facing surface facing the grooved surface; and a drive motor configured to rotate the flat screw. The groove continuously helically extends toward a material inlet from which the thermoplastic material in solid form is supplied, and the material inlet is provided on a side face of the flat screw.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: June 28, 2022
    Inventors: Koichi Saito, Shunsuke Mizukami, Kazuhide Nakamura, Kohei Yuwaki
  • Patent number: 11353377
    Abstract: In a wedge looseness diagnosis which is performed by striking wedges of a rotary electric machine, a variation of a wave form of a strike sound is reduced with respect to a variation of an amount of looseness of the wedges, and it is difficult that a slight difference of the amount of the looseness of the wedges is discriminated, so that the wedges are struck by a strike portion in a state where the wedges are pressed by a pressure portion which presses the wedges, and a strike sound at a high frequency is reduced, whereby an amount of a variation of magnitude of the strike sound is enlarged with respect to a valuation of the amount of the looseness of the wedges, and the amount of the looseness of the wedges is judged in accordance with the strike sound which is obtained by a strike sound measuring portion.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: June 7, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro Morimoto, Daisuke Mizuno, Kazuhiko Fukushima, Kohei Nakamura, Wataru Nagaya
  • Publication number: 20220171402
    Abstract: In a lawn mower, one power receiving terminal is provided on a surface of the lawn mower, and the other power receiving terminal is disposed in a position where it sandwiches at least a part, such as the upper front portion, of a vehicle body with the one power receiving terminal. This configuration serves to suppress a situation in which moisture establishes electrical continuity between the pair of power receiving terminals.
    Type: Application
    Filed: March 28, 2019
    Publication date: June 2, 2022
    Inventors: Takuma Namiki, Kohei Matsuzawa, Kenta Kawanishi, Kotaro Nakamura, Shuhei Maruyama
  • Publication number: 20220173808
    Abstract: Aspects of the present disclosure describe systems, methods. and structures in which guided acoustic Brillouin (GAWBS) noise is measured using a homodyne measurement technique and demonstrated using a number of optical fibers, such fibers being commonly used in contemporary optical communications systems. The measurements are made with single spans and determined to be consistent with separate multi-span long-distance measurements. Additionally, a technique for preparing an optical fiber exhibiting superior GAWBS noise characteristics by reducing coherence length of the optical fiber by spinning the fiber at a high rate during the drawing process such that birefringence coherence length is reduced.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 2, 2022
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Fatih YAMAN, Kohei NAKAMURA, Takanori INOUE, Eduardo Mateo RODRIGUEZ, Shinsuke FUJISAWA, Hussam BATSHON, Yoshihisa INADA, Takaaki OGATA
  • Publication number: 20220165508
    Abstract: A capacitor disposed inside a multilayer substrate that includes a conductive pattern on a surface thereof and an anode portion having a first conductive metal member and a porous portion disposed on a surface of the first conductive metal member, a cathode portion, and a dielectric layer disposed between the anode portion and the cathode portion. Moreover, the anode portion is led out to a surface side of the multilayer substrate by a connection electrode including an alloy layer containing a metal forming the first conductive metal member and a conductive layer disposed on the alloy layer, and in which the connection electrode is connected to the conductive pattern formed on the surface of the multilayer substrate.
    Type: Application
    Filed: February 8, 2022
    Publication date: May 26, 2022
    Inventors: Kazutaka NAKAMURA, Kohei SHIMADA, Takeshi FURUKAWA, Shinji OTANI, Akitomo TAKAHASHI
  • Patent number: 11306237
    Abstract: A latent-heat storage material composition includes: a latent-heat storage material for storing or releasing heat by utilizing absorption or release of latent heat in association with phase change; and additives mixed with the latent-heat storage material. The additives can adjust a property of the latent-heat storage material. The additives include a first additive, which is a water-soluble substance belonging to polysaccharides and is gellan gum, which is also a thickener for increasing the viscosity of a melt of the latent-heat storage material composition in a liquid phase state, based on interaction of the thickener with water contained in the latent-heat storage material composition and cations. The content of the gellan gum is 1 wt % or less of the weight of the whole latent-heat storage material composition.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: April 19, 2022
    Assignee: TOHO GAS CO., LTD.
    Inventors: Kohei Nakamura, Takashi Ina
  • Publication number: 20220085896
    Abstract: Aspects of the present disclosure describe a three-way branching unit switch module having a small footprint suitable for application in an undersea application.
    Type: Application
    Filed: September 7, 2021
    Publication date: March 17, 2022
    Applicants: NEC Laboratories America, Inc., NEC Corporation
    Inventors: Fatih YAMAN, Shinsuke FUJISAWA, Hussam BATSHON, Yoshinari Takigawa, Ryu Kurahashi, Ryuji Aida, Kohei NAKAMURA, Takanori INOUE, Eduardo RODRIGUEZ, Yoshihisa INADA
  • Patent number: 11270200
    Abstract: Aspects of the present disclosure describe a method for digital coherent transmission systems that advantageously provides low-complexity, single-step nonlinearity compensation based on artificial intelligence (AI) implemented in a deep neuron network (DNN).
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 8, 2022
    Inventors: Shaoliang Zhang, Fatih Yaman, Ting Wang, Eduardo Rodriguez, Yoshihisa Inada, Kohei Nakamura, Takanori Inoue
  • Publication number: 20220048155
    Abstract: A polishing apparatus includes a first substrate holder capable of holding a substrate coated with a film. The apparatus also includes a first pad holder capable of holding a first pad. The apparatus further includes a first driver configured to translate the first pad on a surface of the film so as to cause the first pad to polish the film.
    Type: Application
    Filed: February 25, 2021
    Publication date: February 17, 2022
    Applicant: Kioxia Corporation
    Inventors: Mikiya SAKASHITA, Akifumi GAWASE, Kohei NAKAMURA, Yukiteru MATSUI
  • Patent number: 11241000
    Abstract: A dual-bearing reel includes a frame, a clutch yoke and a guide member. The guide member guides the clutch yoke in an axial direction. The guide member includes a metal body attached to the frame, metal shaft members extending from the body and resin cover portions that cover the shaft members and are inserted into through holes in the clutch yoke.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: February 8, 2022
    Assignee: Shimano Inc.
    Inventors: Kohei Nakamura, Kunio Takechi
  • Publication number: 20220011195
    Abstract: Aspects of the present disclosure describe a method for estimating mode field distribution in optical fibers from guided acoustic-wave Brillouin scattering wherein light for which the optical mode-field distribution is determined remains in the optical fibers and the distribution is made for light inside the fiber, and not at a fiber/air interface or other perturbation points to the fiber resulting in a more accurate representation of the optical mode-field distribution in the fiber. Since light is always in the fiber during the determination, no complicated fiber preparation steps or procedures are required and the mode-field distribution is determined as an average distribution along the length of the fiber under test.
    Type: Application
    Filed: June 7, 2021
    Publication date: January 13, 2022
    Applicants: NEC LABORATORIES AMERICA, INC, NEC Corporation
    Inventors: Fatih YAMAN, Eduardo Mateo RODRIGUEZ, Shinsuke FUJISAWA, Hussam BATSHON, Kohei NAKAMURA, Takanori INOUE, Yoshihisa INADA, Takaaki OGATA
  • Patent number: 11189984
    Abstract: An excitation light source apparatus capable of assuring an excellent optical transmission characteristic even at occurrence of a gain tilt is provided. The excitation light source apparatus comprises an excitation light outputting means, a control signal detection means, a control signal detection means, an excitation light control means, and a multiplexing means. The excitation light outputting means outputs excitation light for Raman amplification. The control signal detection means detects a control signal of the excitation light outputting means from beams of WDM signal light transmitted through optical fibers in an upstream direction and a downstream direction. The excitation light control means controls the excitation light outputting means, based on the control signal. The multiplexing means multiplexes the excitation light and each of the beams of the WDM signal light, and outputs the respective multiplexed beams of light to the optical fiber.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 30, 2021
    Assignee: NEC CORPORATION
    Inventor: Kohei Nakamura
  • Patent number: 11164623
    Abstract: Apparatuses, systems, and methods for data strobe write timing. A memory device may receive a data strobe clock signal and serial write data during a write operation. A deserializer circuit of the memory may convert the serial write data into parallel write data using timing based on the data strobe clock signal. For example, one or more internal signals may be generated based on the data strobe clock signal and used to activate various operations of the deserializer circuit. The data strobe clock signal may also be used to activate bit lines of the memory device in order to write the parallel write data to memory cells along those activated bit lines. The memory may also receive a system clock, separate from the data strobe clock signal, which may be used for other operations of the memory. For example, in a read operation, the bit lines may be activated with timing based on the system clock.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: November 2, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Kohei Nakamura, Minari Arai
  • Patent number: 11149179
    Abstract: In a latent heat storage material composition prepared by mixture of a latent heat storage material with an additive that adjusts the physical properties of the latent heat storage material, the latent heat storage material includes an inorganic salt hydrate containing nw (2?nw) molecules of hydration water. The additive is a melting point modifier for adjusting the melting point of the latent heat storage material and is a substance belonging to a sugar alcohol, and is a substance having the physical property of producing negative dissolution heat upon dissolution in hydration water contained in the latent heat storage material. In a whole amount of the latent heat storage material composition, the substance belonging to a sugar alcohol has a concentration that satisfies formulae (1) and (2) per 1 mole of water of hydration of the latent heat storage material. Formula (2): 0.01?xs?1.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: October 19, 2021
    Assignee: TOHO GAS CO., LTD.
    Inventors: Kohei Nakamura, Takashi Ina
  • Publication number: 20210256347
    Abstract: Aspects of the present disclosure describe optical transmission systems exhibiting low complexity fiber nonlinearity compensation provided by neural networks using lookup tables for multiplication operations.
    Type: Application
    Filed: January 12, 2021
    Publication date: August 19, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Shinsuke FUJISAWA, Fatih YAMAN, Eduardo Mateo RODRIGUEZ, Yoshihisa INADA, Kohei NAKAMURA, Takanori INOUE
  • Patent number: 11043786
    Abstract: Aspects of the present disclosure describe systems, methods, and structures that advantageously amplify optical signals through the effect of optical pump signals generated by a multicore laser diode and multicore rare-earth doped optical fiber in optical communication with a 3D waveguide structure and a multicore input signal fiber providing a plurality of optical signals for amplification.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: June 22, 2021
    Inventors: Fatih Yaman, Shaoliang Zhang, Eduardo Mateo Rodriguez, Kohei Nakamura, Yoshihisa Inada, Takanori Inoue
  • Publication number: 20210112797
    Abstract: A dual-bearing reel includes a frame, a clutch yoke and a guide member. The guide member guides the clutch yoke in an axial direction. The guide member includes a metal body attached to the frame, metal shaft members extending from the body and resin cover portions that cover the shaft members and are inserted into through holes in the clutch yoke.
    Type: Application
    Filed: August 17, 2020
    Publication date: April 22, 2021
    Inventors: Kohei NAKAMURA, Kunio TAKECHI
  • Publication number: 20210050929
    Abstract: In order to suppress narrowing of the bandwidth of an optical signal which occurs when multiplexing/demultiplexing devices are disposed in multiple stages, the optical transmission device is provided with: first multiplexing devices each for outputting a first wavelength-multiplexed signal by multiplexing post-first-processing signals obtained by applying first filtering processing to transmitted optical signals input thereto; and a second multiplexing device for outputting a second wavelength-multiplexed signal by multiplexing the first wavelength-multiplexed signals after second filtering processing is applied thereto. The upper limit and the lower limit of a first transmission band, that is, a transmission band pertaining to the first filtering processing, are respectively different from the upper limit and the lower limit of a second transmission band, that is, a transmission band pertaining to the second filtering processing.
    Type: Application
    Filed: April 19, 2019
    Publication date: February 18, 2021
    Applicant: NEC Corporation
    Inventor: Kohei NAKAMURA
  • Patent number: 10908095
    Abstract: An inspection device of the present disclosure may include an image acquisition unit that acquires image data including an inspection object, the image data being captured by a wearable camera attached to a worker inspecting the inspection object, an inspection state acquisition unit that acquires inspection state information for calculating at least one of a deviation distance from a regulation distance or a deviation angle from a regulation angle with respect to the inspection object of the worker, and an image correction unit that calculates at least one of the deviation distance or the deviation angle based on the image data and the inspection state information and corrects the image data.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventors: Kohei Nakamura, Katsuhiro Miyagaki, Hiroyuki Iwatsuki, Shinji Kato, Masaru Horiguchi
  • Publication number: 20200403383
    Abstract: Aspects of the present disclosure describe systems, methods and structures for providing semiconductor amplifiers exhibiting a low polarization-dependent gain.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 24, 2020
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Fatih YAMAN, Shinsuke FUJISAWA, Eduardo Mateo RODRIGUEZ, Kohei NAKAMURA, Takanori INOUE, Yoshihisa INADA, Takaaki OGATA