Patents by Inventor Takashi Nakajima

Takashi Nakajima 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: 20240145141
    Abstract: Provided is a magnetic base body having excellent insulating properties and magnetic properties. A magnetic base body according to one embodiment includes: soft magnetic metal particles; and insulating films covering surfaces of the soft magnetic metal particles. The soft magnetic metal particles include a first soft magnetic metal particle, and the insulating films include a first insulating film covering a surface of the first soft magnetic metal particle. The first insulating film includes a first oxide region and a second oxide region, the first oxide region containing an oxide of an element A as a main component and covering a first surface region constituting a part of the surface of the first soft magnetic metal particle, the second oxide region containing an oxide of an element B as a main component and covering a second surface region of the first soft magnetic metal particle different from the first surface region.
    Type: Application
    Filed: October 25, 2023
    Publication date: May 2, 2024
    Inventors: Takashi NAKAJIMA, Yuuhei UEYAMA
  • Publication number: 20240142696
    Abstract: An objective of the present invention is to provide a mode conversion device capable of designing any coupling efficiency and full width at half maximum, and a design method therefor. According to the present invention, a mode conversion device includes a long period grating at a core of an optical fiber through which light is able to propagate in at least two propagation modes. The long period grating satisfies a relationship of Expression C1, where a full width at half maximum FWHM is a wavelength band in which the coupling efficiency is a half of coupling efficiency of mode conversion at a center wavelength, C is coupling efficiency, Lc is a complete coupling length, Lg is a grating length, ? is a grating pitch, and ?? is a propagation constant difference between the two propagation modes at the center wavelength of a mode conversion target. [ Math .
    Type: Application
    Filed: February 17, 2021
    Publication date: May 2, 2024
    Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yoko YAMASHITA, Takayoshi MORI, Takashi MATSUI, Kazuhide NAKAJIMA
  • Publication number: 20240145166
    Abstract: One object is to manufacture a magnetic base body containing soft magnetic metal particles with a high content percentage of Fe. A manufacturing method of a magnetic base body according to one embodiment includes: producing a molded body containing a plurality of soft magnetic metal particles at a filling factor of 85% or higher, each of the plurality of soft magnetic metal particles containing Fe and an element A more apt to oxidation than Fe; and heating the molded body to form an insulating film on a surface of each of the plurality of soft magnetic metal particles, the insulating film containing an oxide of Fe and an oxide of the element A. A content percentage of Fe in the plurality of soft magnetic metal particles after the heating is higher than a content percentage of Fe in the plurality of soft magnetic metal particles before the heating.
    Type: Application
    Filed: October 30, 2023
    Publication date: May 2, 2024
    Inventors: Tomoya HAGIWARA, Tatsuya TOMITA, Takashi NAKAJIMA
  • Publication number: 20240132147
    Abstract: A vehicle power supply system includes a power source control device that executes a process of switching a connection state of a driving circuit to the main power source and an auxiliary power source including; a process of switching the connection state so as to transition to a backup state as a voltage decrease of the main power source occurs, and a process of switching the connection state so as to transition to a normal state as the voltage decrease of the main power source is resolved. After a voltage decrease of the main power source occurs, a turning-side control device of a steering control unit sets an output-limited state for a turning-side motor. The output-limited state is canceled upon the power source control device completing switching of the connection state so as to transition.
    Type: Application
    Filed: October 11, 2023
    Publication date: April 25, 2024
    Applicants: JTEKT CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yuuta KAJISAWA, Yuji FUJITA, Yugo NAGASHIMA, Kazuma HASEGAWA, Takashi KOUDAI, Kaishi MONOBE, Kenichi ABE, Masaharu YAMASHITA, Shintaro TAKAYAMA, Kazuaki IIDA, Yasushi HORA, Yosuke YAMASHITA, Hiroki TOMIZAWA, Nobuyori NAKAJIMA, Hayaki TANABE, Toyohiro HAYASHI, Takeshi IWANA
  • Publication number: 20240132519
    Abstract: Compounds represented by formula (I), compounds of the less-polar group of two groups of diastereomers in which the carbon atom indicated by * in formula (II) is an asymmetric carbon atom, salts of the compounds, and solvates of the compounds or salts. The compounds have Nrf2 activating action.
    Type: Application
    Filed: December 28, 2021
    Publication date: April 25, 2024
    Applicant: SENJU PHARMACEUTICAL CO., LTD.
    Inventors: Tomoyo MIYABE, Shinnosuke MACHIDA, Yuka OBA, Masaki KAKEHI, Takashi IMADA, Takeshi NAKAJIMA
  • Patent number: 11957455
    Abstract: A bioinformation acquiring apparatus includes at least one processor and a memory configured to store a program to be executed in the processor.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: April 16, 2024
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Mitsuyasu Nakajima, Kouichi Nakagome, Takashi Yamaya, Yasushi Maeno, Akira Hamada, Shinichi Matsui
  • Publication number: 20240118486
    Abstract: It is an object of the present invention to provide a multicore optical fiber, a design method for the multicore optical fiber and an optical transmission method using the multicore optical fiber including four cores having a standard cladding diameter of 125±1 ?m for an existing single mode optical fiber covering several thousands of kilometers of transmission. The multicore optical fiber according to the present invention disposes two-stage claddings with different refractive indices around each core, and designates as a predetermined range, a core radius a1, a radius a2 of a first cladding region surrounding each core, specific refractive index ?1 relative to the core of the first cladding region and a specific refractive index ?2 relative to the core of a second cladding region including four cores and the first cladding region.
    Type: Application
    Filed: December 21, 2023
    Publication date: April 11, 2024
    Inventors: Takashi Matsui, Kazuhide Nakajima
  • Patent number: 11956070
    Abstract: An object of the present invention is to provide an optical transmission system capable of controlling a transmission capacity and a signal processing load of a MIMO equalizer, without depending on the number of propagation modes of the optical fiber.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: April 9, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Taiji Sakamoto, Masaki Wada, Takashi Yamamoto, Kazuhide Nakajima
  • Patent number: 11948364
    Abstract: An electronic apparatus operated by a sales clerk includes a display, a camera configured to capture an image of a code displayed on a screen of a portable registration apparatus operated by a customer in a store, the code corresponding to one or more commodities to be purchased and check data indicating whether each of said one or more commodities needs to be checked by the sales clerk before being checked out, and a processor configured to, when the image of the code is captured by the camera, acquire information indicating said one or more commodities to be purchased and the check data using the code, and control the display to display a screen showing one or more commodities that need to be checked by the sales clerk based on the acquired information.
    Type: Grant
    Filed: December 12, 2022
    Date of Patent: April 2, 2024
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Kenya Hiramatsu, Akiko Susaki, Tsuyoshi Gotanda, Takashi Nakajima
  • Publication number: 20240102886
    Abstract: An object of the present invention is to provide an evaluation method and an evaluation device for easily determining whether or not a structural parameter of a multi-core fiber satisfies a desired connection loss value (a specification). The evaluation method according to the present invention includes a step of measuring center coordinates of each core with the center coordinates when a clad is approximated by a circle as an origin in an observed cross-sectional structure of the multi-core fiber to be objected, obtaining a length of a line segment connecting the origin and the center of each core and an angle formed by two line segments connecting the origin and two adjacent cores, and judging whether or not a desired connection loss characteristic is satisfied on the basis of whether or not the values satisfy a predetermined determination formula.
    Type: Application
    Filed: December 11, 2020
    Publication date: March 28, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Nobutomo HANZAWA, Takashi MATSUI, Yuto SAGAE, Kazuhide NAKAJIMA
  • Patent number: 11918372
    Abstract: A cognitive function evaluation device includes: an obtainment unit that obtains utterance data indicating a voice of an evaluatee uttering a sentence as instructed; a calculation unit that calculates, from the utterance data obtained by the obtainment unit, a feature based on the utterance data; an evaluation unit that compares the feature calculated by the calculation unit to reference data indicating a relationship between voice data indicating a voice of a person and a cognitive function of the person to evaluate the cognitive function of the evaluatee; and an output unit that outputs the sentence to be uttered by the evaluatee and outputs a result of evaluation by the evaluation unit.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: March 5, 2024
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Sadayuki Sumi, Ryosuke Nagumo, Kengo Abe, Yoshihiro Matsumura, Takashi Nishiyama, Hirobumi Nakajima, Kohji Sasabe, Makoto Kariyasu, Takako Yoshimura, Minoru Toyama
  • Publication number: 20240068884
    Abstract: A thermosensitive part sensing temperature; a temperature sensor for measurement provided in the unit and measuring temperature by contacting the unit with a body to be measured; a temperature detecting part detecting, from when the unit contacts the body, the time when the sensor senses a difference from an initial temperature of the sensor, and a measured temperature of the sensor at that time, and detecting, from when the difference is sensed, a time after a certain length of time and a measured temperature of the sensor at that time; an estimating part estimating, from the time when the difference is sensed and a time after a certain length of time, the time when the thermosensitive part contacts the body, and the measured temperature at that time; and a heat conduction analyzing part estimating the measured temperature based on output information from the temperature detecting part and the estimating part.
    Type: Application
    Filed: January 12, 2022
    Publication date: February 29, 2024
    Applicants: SEMITEC Corporation, National Institute of Technology, HIROSAKI UNIVERSITY
    Inventors: Shigenao MARUYAMA, Yuya ISEKI, Takuma KOGAWA, Takashi NONAKA, Yasushi HOSOKAWA, Takahiro OKABE, Yutaro TABATA, Tadashi MATSUDATE, Toshinori NAKAJIMA, Masaya HIGASHI, Manabu ORITO
  • Publication number: 20240072507
    Abstract: The purpose of the present invention is to provide an optical fiber amplifier capable of seamlessly and collectively amplifying optical signals in a plurality of bands. In order to achieve the aforementioned purpose, the optical fiber amplifier according to the present invention is the optical fiber amplifier that amplifies multiple wavelength bands, and in cross-section, one signal light primary propagation region, and a doped region where rare-earth ions have been added, wherein the doped region includes the rare-earth-doped optical fiber existing other than the propagation region.
    Type: Application
    Filed: January 21, 2021
    Publication date: February 29, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Shinichi AOZASA, Taiji SAKAMOTO, Kazuhide NAKAJIMA, Takashi MATSUI
  • Patent number: 11848133
    Abstract: A magnetic base body is constituted by: metal magnetic grains containing Fe, and Si as an optional component, where the total content of the Fe and Si is 99% by mass or higher; and oxide layers present between the metal magnetic grains; wherein the ratio (IFe2SiO4/IFe) of the strongest diffraction line intensity (IFe2SiO4) observed in a range of 30.8°?2??32.2° to the strongest diffraction line intensity (IFe) observed in a range of 43.8°?2??45.2° in X-ray diffraction measurement using the CuK? ray is 0.0020 or higher; and the ratio (IFe2O3/IFe) of the strongest diffraction line intensity (IFe2O3) observed in a range of 33.0°?2??34.4° to the IFe in X-ray diffraction measurement using the CuK? ray is lower than 0.0010.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: December 19, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kazuki Misawa, Takashi Nakajima
  • Patent number: 11801757
    Abstract: A control method for an electric vehicle in which a motor is used as a traveling drive source and deceleration is performed by a regenerative braking force of the motor, the electric vehicle including a towing unit configured to tow a separate object, the method including: acquiring an accelerator operation amount; acquiring a total mass of the electric vehicle; estimating a disturbance torque acting on the electric vehicle; acquiring an angular velocity of a rotary body; estimating a vehicle body speed of the electric vehicle; calculating a torque command value for the motor; measuring a load applied to the towing unit; correcting the total mass of the electric vehicle based on the measured load applied to the towing unit and the torque command value; controlling a torque generated in the motor based on the torque command value; and converging the torque command value to the disturbance torque.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: October 31, 2023
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Akira Sawada, Takashi Nakajima, Kengo Fujiwara, Shou Oono, Yui Ito
  • Publication number: 20230332591
    Abstract: Provided is an air compressor that suppresses a rise in delivery temperature due to a change in atmospheric pressure, and consequently improves the life of parts. The air compressor 1 includes a motor 2, a compressor main body 3 driven by the motor 2 to compress air, a delivery pressure sensor 12 that senses a delivery pressure of the compressor main body 3, an atmospheric pressure sensor 13 that senses an atmospheric pressure, and a controller 15. The controller 15 compares the delivery pressure sensed by the delivery pressure sensor 12 with a set pressure, and performs operation control based on a result of the comparison. The controller 15 corrects the set pressure such that a ratio between the atmospheric pressure sensed by the atmospheric pressure sensor 13 and the set pressure becomes a set value set in advance.
    Type: Application
    Filed: August 16, 2021
    Publication date: October 19, 2023
    Inventors: Yuuji ITOU, Toshiaki YABE, Kohei SAKAI, Takashi NAKAJIMA
  • Publication number: 20230316251
    Abstract: A distributed computer system includes a central server, a computing device of a user, and point-of-sale terminals. The central server is configured to assign a global user ID to a user and store, in association with the global user ID, local user IDs. The computing device is configured to generate and display a code symbol representing at least one user ID. A point-of-sale terminal is configured to scan the displayed code symbol and code symbols of merchandise being purchased, and generate transaction information. A local server is configured to transfer the transaction information from the point-of-sale terminal to the central server. When the transaction information includes a local user ID, a point total of the user is updated based on the transaction information and transmitted to the computing device. The central server stores the transaction information, which is received from the local server, in association with the global user ID.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Inventors: Kuniyoshi YAMADA, Koichi SUGIYAMA, Yasuhiro ARAI, Tsuyoshi GOTANDA, Makoto YOSHIMURA, Takashi NAKAJIMA, Nobuhiro SUGITA
  • Publication number: 20230266646
    Abstract: A projector includes: an exterior casing having a first wall section; a projection optical part accommodated in the exterior casing and having a lens group projecting image light onto a projection surface; a focus lever moving a position of the lens group; a power switch being pressed to generate a control signal; and a coupling terminal electrically coupled to a cable transmitting an electrical signal. The focus lever, the power switch, and the coupling terminal are arranged at the first wall section.
    Type: Application
    Filed: February 17, 2023
    Publication date: August 24, 2023
    Inventors: Takashi NAKAJIMA, Yoshinori HASHIMOTO, Toshimitsu WATANABE, Nobuyuki OTSUKI
  • Publication number: 20230135774
    Abstract: An interconnect substrate includes a first interconnect layer, a first insulating layer covering a side surface and a lower surface of the first interconnect layer, a second insulating layer disposed on the first insulating layer and covering an upper surface of the first interconnect layer, a second interconnect layer formed on a lower surface of the first insulating layer, and a third interconnect layer formed on an upper surface of the second insulating layer, wherein the second interconnect layer includes a first ground plane, wherein the third interconnect layer includes a second ground plane, and wherein the first ground plane, the first insulating layer, the first interconnect layer, the second insulating layer, and the second ground plane constitute a stripline.
    Type: Application
    Filed: October 24, 2022
    Publication date: May 4, 2023
    Inventor: Takashi NAKAJIMA
  • Publication number: 20230112541
    Abstract: An electronic apparatus operated by a sales clerk includes a display, a camera configured to capture an image of a code displayed on a screen of a portable registration apparatus operated by a customer in a store, the code corresponding to one or more commodities to be purchased and check data indicating whether each of said one or more commodities needs to be checked by the sales clerk before being checked out, and a processor configured to, when the image of the code is captured by the camera, acquire information indicating said one or more commodities to be purchased and the check data using the code, and control the display to display a screen showing one or more commodities that need to be checked by the sales clerk based on the acquired information.
    Type: Application
    Filed: December 12, 2022
    Publication date: April 13, 2023
    Inventors: Kenya HIRAMATSU, Akiko SUSAKI, Tsuyoshi GOTANDA, Takashi NAKAJIMA