Patents by Inventor Naoki Sakai

Naoki Sakai 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: 20250011963
    Abstract: An exterior member includes a metal material made of aluminum or an aluminum alloy, an anodized layer formed on a surface of the metal material and including micropores; and a composite film layer of metal hydroxide and metal oxide, provided on the anodized layer at a surface side of the micropores to seal the micropores.
    Type: Application
    Filed: September 18, 2024
    Publication date: January 9, 2025
    Inventors: Arata YOSHIDA, Fumiya DAICHOU, Naoki SAKAI, Yasuhiro SHIBATA
  • Publication number: 20240321453
    Abstract: An information processing apparatus includes circuitry. The circuitry acquires first information from an answer to an inquiry to a user. The answer has been input to a terminal apparatus used by the user. The first information indicates motivation of the user. The circuitry further acquires second information from the inquiry with the terminal apparatus. The second information indicates a condition related to health of the user. The circuitry calculates a plurality of indicators associated with an organization based on the first information and the second information, and outputs the plurality of indicators.
    Type: Application
    Filed: March 11, 2024
    Publication date: September 26, 2024
    Inventors: Kazuki FUNAHASHI, Toshiaki TOKITA, Masako YOSHII, Naoki SAKAI
  • Publication number: 20240164673
    Abstract: A health status management system includes circuitry to measure a pulse wave of a user to obtain objective evaluation data for objective evaluation in relation to a mental health status, obtain one or more answers of the user to one or more questions related to the mental health status as subjective evaluation data for subjective evaluation in relation to the mental health status, control a period of measuring the pulse wave and a period of performing the subjective evaluation to overlap with each other, control a start time of the period of measuring the pulse wave to be earlier than a start time of the period of performing the subjective evaluation, transmit, to additional circuitry, the objective evaluation data and the subjective evaluation data, and display, on a screen, information on the objective evaluation and information on the subjective evaluation.
    Type: Application
    Filed: November 6, 2023
    Publication date: May 23, 2024
    Applicant: Ricoh Company, Ltd.
    Inventors: Kazuki Funahashi, Toshiaki Tokita, Masako Yoshii, Naoki Sakai
  • Patent number: 11926246
    Abstract: In a local cart traveling system, a frame track includes first and second metal rails each with an L-shaped cross section and facing each other. A local cart is within the frame track, and includes a first electricity receiving tire and a second electricity receiving tire to travel on horizontal travel surfaces of the rails. A voltage supplier supplies an AC voltage to the travel surfaces, so that the first metal rail and a first electricity receiving tire define a first capacitor and the second metal rail and the second electricity receiving tire define a second capacitor. The local cart includes a power receiver to receive AC power, and a travel motor that receives power after the AC power is rectified. The frame track includes a connecting plate as an electrical insulator covering portions of the surfaces of vertical walls of the first metal rail and the second metal rail.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 12, 2024
    Assignees: MURATA MACHINERY, LTD., NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY
    Inventors: Minoru Mizutani, Kazuhiro Ishikawa, Masafumi Hayakawa, Takashi Ohira, Naoki Sakai, Hiroki Kuniyoshi, Makoto Teramoto
  • Publication number: 20230304429
    Abstract: A honeycomb structure includes: a honeycomb structure portion including: an outer peripheral wall; a partition wall disposed on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein the outer peripheral wall and/or the cells include at least one slit containing a filling material layer made of a filling material, wherein the filling material layer has pores, and wherein the pores having a pore diameter of 90 ?m or more account for 30% by volume or more of all the pores contained in the filling material layer.
    Type: Application
    Filed: February 6, 2023
    Publication date: September 28, 2023
    Applicant: NGK Insulators, Ltd.
    Inventor: Naoki SAKAI
  • Publication number: 20230234121
    Abstract: Provided is a gear material that is for a differential ring gear or the like, and that has a relatively large shape and has spur gear teeth or helical gear teeth at an outer periphery thereof, and with which the yield of a final product is improved, the operating cost of gear cutting by a hobbing machine is reduced, and the rate of cutting is dramatically increased to reduce a machining time, whereby the total manufacturing cost can be reduced. This gear material is in the shape of a ring having an outer diameter of at least 170 mm and an outer peripheral thickness of at least 30 mm, and has, at an outer peripheral surface thereof, spur gear teeth or helical gear teeth with a machining allowance of 0.2 mm to 2.0 mm on either side thereof.
    Type: Application
    Filed: November 14, 2022
    Publication date: July 27, 2023
    Inventors: Kazuaki TAKIDO, Kenji TASAKI, Naoki SAKAI
  • Publication number: 20220405866
    Abstract: An information processing method includes preparing first data containing information of a workpiece, information of a product, and information of a plurality of tools used for machining the workpiece to manufacture the product. The information processing method includes instructing a job to generate second data by using the first data. The second data contains information of respective paths for the plurality of tools. The information processing method includes displaying a status of information processing of the job on a display portion after the instructing of the job. The displaying includes displaying, on the display portion, a status of first information processing of calculating a machined shape formed by a first tool included in the plurality of tools and a status of second information processing of calculating a path for the first tool that is performed after the first information processing.
    Type: Application
    Filed: June 9, 2022
    Publication date: December 22, 2022
    Inventors: Junji Watanabe, Kazunari Kurokawa, Hideki Watanabe, Yuichi Matsumi, Kosuke Saito, Naoki Sakai
  • Patent number: 11387794
    Abstract: In each E-class inverter, an internal voltage detection circuit detects an internal voltage of a resonant type power supply circuit or a matching circuit and adjusts a phase of a driving signal of a MOSFET based on a detected voltage. It is thus possible to match a phase of a current voltage of a sine waveform of each inverter and combine power highly efficiently. Since power combining is performed highly efficiently without using a variable capacitor and variable inductor, it is possible to suppress upsizing of elements and achieve downsizing of a power amplifier circuit.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: July 12, 2022
    Assignees: DENSO CORPORATION, National University Corporation Toyohashi University of Technology
    Inventors: Takanari Sasaya, Tetsuo Hirano, Takashi Ohira, Naoki Sakai, Takaaki Masaki
  • Publication number: 20210138911
    Abstract: In a local cart traveling system, a frame track includes first and second metal rails each with an L-shaped cross section and facing each other. A local cart is within the frame track, and includes a first electricity receiving tire and a second electricity receiving tire to travel on horizontal travel surfaces of the rails. A voltage supplier supplies an AC voltage to the travel surfaces, so that the first metal rail and a first electricity receiving tire define a first capacitor and the second metal rail and the second electricity receiving tire define a second capacitor. The local cart includes a power receiver to receive AC power, and a travel motor that receives power after the AC power is rectified. The frame track includes a connecting plate as an electrical insulator covering portions of the surfaces of vertical walls of the first metal rail and the second metal rail.
    Type: Application
    Filed: June 1, 2018
    Publication date: May 13, 2021
    Inventors: Minoru MIZUTANI, Kazuhiro ISHIKAWA, Masafumi HAYAKAWA, Takashi OHIRA, Naoki SAKAI, Hiroki KUNIYOSHI, Makoto TERAMOTO
  • Patent number: 10831022
    Abstract: (Object) To provide an information display device, with a simple configuration, that is capable of reducing stress in perceiving information. (Means of Achieving the Object) The disclosed information display device irradiates a transparent-reflective member with light for forming an image, in order to display a virtual image of the image on the transparent-reflective member. The information display device includes: a plurality of light sources having different peak emission wavelengths, respectively, which are provided for generating the light for forming the image; a vision-related information input unit configured to receive an input of information relating to vision of a viewer viewing the virtual image; and a luminance adjusting unit configured to adjust luminance of each of the plurality of light sources, independently, based on the information input into the vision-related information input unit.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: November 10, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shohta Kobashigawa, Yumiko Kishi, Hiroki Hiraguchi, Naoki Sakai
  • Patent number: 10790706
    Abstract: A wireless power transmission apparatus includes a high-frequency power generator, a power-transmitting electrode, a plurality of power-receiving electrodes, a switchable matching device, a detection circuit and a controller. The high-frequency power generator generates high-frequency power. The power-transmitting electrode is configured to transmit the high-frequency power generated by the high-frequency power generator. Each of the power-receiving electrodes is capable of wirelessly receiving the high-frequency power from the power-transmitting electrode. The matching device is electrically connected with the power-transmitting electrode and includes one or more matching circuits. The detection circuit detects, based on the output of reflected power from the power-transmitting electrode, whether or not the generation of the high-frequency power by the high-frequency power generator and the transmission of the high-frequency power at the power-transmitting electrode match each other.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: September 29, 2020
    Assignees: DENSO CORPORATION, National University Corporation Toyohashi University of Technology
    Inventors: Masayoshi Sugino, Takashi Ohira, Naoki Sakai, Satoshi Kitabayashi, Motoaki Miyazaki
  • Publication number: 20200266776
    Abstract: In each E-class inverter, an internal voltage detection circuit detects an internal voltage of a resonant type power supply circuit or a matching circuit and adjusts a phase of a driving signal of a MOSFET based on a detected voltage. It is thus possible to match a phase of a current voltage of a sine waveform of each inverter and combine power highly efficiently. Since power combining is performed highly efficiently without using a variable capacitor and variable inductor, it is possible to suppress upsizing of elements and achieve downsizing of a power amplifier circuit.
    Type: Application
    Filed: December 30, 2019
    Publication date: August 20, 2020
    Inventors: TAKANARI SASAYA, TETSUO HIRANO, TAKASHI OHIRA, NAOKI SAKAI, TAKAAKI MASAKI
  • Patent number: 10680462
    Abstract: A high frequency oscillator has a high frequency generation part, an oscillation part, a matching unit, rectification element parts and switch parts. The oscillation part oscillates high frequency power generated by the high frequency generation part. The matching unit is arranged between the high frequency generation part and the oscillation part, and has one or more capacitors and matching circuits having difference characteristics so as to perform matching between the high frequency generation part and the oscillation part. The rectification element parts and the matching circuits are arranged in one-to-one correspondence. The rectification element parts rectify high frequency power supplied from the high frequency generation part to the oscillation part. The switch part is connected to the corresponding rectification element part to switch the corresponding capacitor connected to the corresponding matching circuit through the corresponding rectification element part.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: June 9, 2020
    Assignees: DENSO CORPORATION, National University Corporation Toyohashi University of Technology
    Inventors: Masayoshi Sugino, Takashi Ohira, Naoki Sakai, Satoshi Kitabayashi, Shinji Abe
  • Patent number: 10491870
    Abstract: An image display apparatus and a method of displaying an image. The image display apparatus includes an image-light projection device configured to display a display image, and a display controller configured to determine chromaticity coordinates of a display color of the display image based on data of a chromaticity coordinate area of background light such that the display color of the display image is set outside the chromaticity coordinate area of the background light. The method includes determining chromaticity coordinates of a display color of a display image based on data of a chromaticity coordinate area of background light such that the display color of the display image is set outside the chromaticity coordinate area of the background light.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: November 26, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoichi Ichikawa, Naoki Sakai, Shohta Kobashigawa, Hiroki Hiraguchi, Yumiko Kishi
  • Publication number: 20190162958
    Abstract: (Object) To provide an information display device, with a simple configuration, that is capable of reducing stress in perceiving information. (Means of Achieving the Object) The disclosed information display device irradiates a transparent-reflective member with light for forming an image, in order to display a virtual image of the image on the transparent-reflective member. The information display device includes: a plurality of light sources having different peak emission wavelengths, respectively, which are provided for generating the light for forming the image; a vision-related information input unit configured to receive an input of information relating to vision of a viewer viewing the virtual image; and a luminance adjusting unit configured to adjust luminance of each of the plurality of light sources, independently, based on the information input into the vision-related information input unit.
    Type: Application
    Filed: May 8, 2017
    Publication date: May 30, 2019
    Inventors: Shohta KOBASHIGAWA, Yumiko KISHI, Hiroki HIRAGUCHI, Naoki SAKAI
  • Publication number: 20190165607
    Abstract: A high frequency oscillator has a high frequency generation part, an oscillation part, a matching unit, rectification element parts and switch parts. The oscillation part oscillates high frequency power generated by the high frequency generation part. The matching unit is arranged between the high frequency generation part and the oscillation part, and has one or more capacitors and matching circuits having difference characteristics so as to perform matching between the high frequency generation part and the oscillation part. The rectification element parts and the matching circuits are arranged in one-to-one correspondence. The rectification element parts rectify high frequency power supplied from the high frequency generation part to the oscillation part. The switch part is connected to the corresponding rectification element part to switch the corresponding capacitor connected to the corresponding matching circuit through the corresponding rectification element part.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Inventors: Masayoshi SUGINO, Takashi OHIRA, Naoki SAKAI, Satoshi KITABAYASHI, Shinji ABE
  • Publication number: 20190103769
    Abstract: A wireless power transmission apparatus includes a high-frequency power generator, a power-transmitting electrode, a plurality of power-receiving electrodes, a switchable matching device, a detection circuit and a controller. The high-frequency power generator generates high-frequency power. The power-transmitting electrode is configured to transmit the high-frequency power generated by the high-frequency power generator. Each of the power-receiving electrodes is capable of wirelessly receiving the high-frequency power from the power-transmitting electrode. The matching device is electrically connected with the power-transmitting electrode and includes one or more matching circuits. The detection circuit detects, based on the output of reflected power from the power-transmitting electrode, whether or not the generation of the high-frequency power by the high-frequency power generator and the transmission of the high-frequency power at the pow s itting electrode match each other.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 4, 2019
    Inventors: Masayoshi SUGINO, Takashi OHIRA, Naoki SAKAI, Satoshi KITABAYASHI, Motoaki MIYAZAKI
  • Patent number: 9905018
    Abstract: An imaging apparatus acquires an image including a still image and a moving image, tracks a position of the object within an image capturing area of the image, records a luminance change within a region of the object being tracked, detects a point having a luminance change amount equal to or greater than a threshold, as a specular reflection area, calculates an object correction value, which is a color correction value of the object, based on color information of the specular reflection area, and corrects color overlap of the image based on the object correction value.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: February 27, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventor: Naoki Sakai
  • Publication number: 20170230628
    Abstract: An image display apparatus and a method of displaying an image. The image display apparatus includes an image-light projection device configured to display a display image, and a display controller configured to determine chromaticity coordinates of a display color of the display image based on data of a chromaticity coordinate area of background light such that the display color of the display image is set outside the chromaticity coordinate area of the background light. The method includes determining chromaticity coordinates of a display color of a display image based on data of a chromaticity coordinate area of background light such that the display color of the display image is set outside the chromaticity coordinate area of the background light.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 10, 2017
    Inventors: Yoichi ICHIKAWA, Naoki Sakai, Shohta Kobashigawa, Hiroki Hiraguchi, Yumiko Kishi
  • Publication number: 20160100146
    Abstract: An imaging apparatus acquires an image including a still image and a moving image, tracks a position of the object within an image capturing area of the image, records a luminance change within a region of the object being tracked, detects a point having a luminance change amount equal to or greater than a threshold, as a specular reflection area, calculates an object correction value, which is a color correction value of the object, based on color information of the specular reflection area, and corrects color overlap of the image based on the object correction value.
    Type: Application
    Filed: October 1, 2015
    Publication date: April 7, 2016
    Applicant: Ricoh Company, Ltd.
    Inventor: Naoki SAKAI