Patents by Inventor Masato Tanaka

Masato Tanaka 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: 20210033214
    Abstract: A valve abnormality detecting device includes an opening acquiring portion to acquire a valve opening value; a pressure acquiring portion to acquire a pressure value of operating device air of an operating device for a valve; a stability-time detecting portion configured to detect a stable-opening state in which the valve opening value acquired by the opening acquiring portion 1 is substantially constant; a frictional force detecting portion configured to detect a difference between a maximum pressure value and a minimum pressure value of the operating device air in the stable-opening state as an index value indicating a frictional force at a sliding portion of the valve; and an abnormality determining portion configured to determine that an abnormality may have occurred in the valve in a case where a frequency of occurrence of reduction in which the index value falls below a specified value is an abnormal frequency.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 4, 2021
    Inventors: Masato TANAKA, Fumiaki Yamasaki
  • Patent number: 10870355
    Abstract: This motor driving control apparatus has (A) an inverter unit configured to drive a motor; (B) a separation switch configured to separate a power source from the inverter unit; and (C) a controller configured to instruct the separation switch to separate the power source from the inverter unit and control the inverter unit to perform switching according to a speed and a braking target torque, upon detecting an event that braking should be performed without passing a regenerative current to the power source from the inverter unit. By introducing the separation switch that operates as described above, it becomes possible to perform control so as to consume the power by the motor itself without passing the regenerative current to the power source such as a battery.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: December 22, 2020
    Assignees: MICROSPACE CORPORATION, TAIYO YUDEN CO., LTD.
    Inventors: Masato Tanaka, Yasuo Hosaka, Hiromi Hagiwara, Teruaki Kawahigashi, Yuto Kajiya, Taichi Yanaoka
  • Patent number: 10834272
    Abstract: A reading device includes an imaging element and correcting circuitry. The imaging element is configured to receive light from an object selectively irradiated with visible light or invisible light. The correcting circuitry is configured to apply correction processing based on a difference in an optical characteristic between an invisible light region and a visible light region to an image signal in the invisible light region output from the imaging element and output the image signal corrected.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: November 10, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Masamoto Nakazawa, Tadaaki Oyama, Masahiro Itoh, Masato Tanaka
  • Publication number: 20200341278
    Abstract: In an aircraft HMD, a visor has toroidally-shaped portions respectively corresponding to left and right eyes of a user, and the toroidally-shaped portions are connected at a substantially central part between the user's eyes. The toroidally-shaped portions are aspherical shapes having a smaller curvature in a vertical direction than in a horizontal direction. Two sets of an image display section and a projection optical system are provided independently corresponding to the left and right toroidally-shaped portions. Due to the difference in curvature, a difference in optical power caused, for example, by a difference in incident angle on the reflecting surface is eliminated. This lessens astigmatism and allows display of an image with a wider visual field. An intermediate image is formed in both the vertical and horizontal directions within the projection optical system or in the middle of an optical path from the projection optical system to the reflecting surface.
    Type: Application
    Filed: September 12, 2018
    Publication date: October 29, 2020
    Applicant: SHIMADZU CORPORATION
    Inventor: Masato TANAKA
  • Patent number: 10800707
    Abstract: Provided are a magnesia carbon brick which does not include graphite yet has excellent spalling and corrosion resistances, and a method for producing thereof. The brick is obtained by adding an organic binder to a refractory raw material mixture followed by kneading, molding, and heat-treating, wherein the mixture includes total 0.1 to 2.0 mass % of pitch and/or carbon black, total 0.1 to 1.0 mass % of aluminum and/or aluminum alloy, 3.0 to 10.0 mass % of magnesia having particle diameter of less than 0.075 mm, and 87.0 to 96.0 mass % of magnesia having particle diameter of 0.075 to 5 mm; and a mass ratio of magnesia having particle diameter of 1 to 5 mm to that of 0.075 to 1 mm is 1.66 to 2.34; graphite is not included therein; and an apparent porosity thereof after heat-treatment under reductive atmosphere at 1400° C. for 3 hours is 8.0% or less.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: October 13, 2020
    Assignees: KROSAKIHARIMA CORPORATION, NIPPON STEEL CORPORATION
    Inventors: Yuya Tomita, Masato Tanaka, Shigeto Sawai
  • Publication number: 20200310324
    Abstract: An image forming apparatus including an image forming unit, a fixing device, and circuitry is provided. The image forming unit is configured to perform a special image forming operation that forms a color toner image and a special toner image with a color toner and a special toner, respectively, on a recording medium and a normal image forming operation that forms the color toner image without forming the special toner image on the recording medium. The fixing device is configured to fix the color toner image and the special toner image on the recording medium. The circuitry is configured to perform, in the special image forming operation, a toner amount suppression control that makes an amount of the color toner on the recording medium per unit area smaller than that in the normal image forming operation.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Masato TANAKA, Keiji KUNIMI, Masaki YOSHINO, Kazumi SUZUKI
  • Publication number: 20200284988
    Abstract: An optical connection structure includes a first spatial multiplex transmission line, a second spatial multiplex transmission line, a first lens arrangement, a second lens arrangement and a first beam diameter conversion portion. The first spatial multiplex transmission line has a plurality of first transmission lines. The second spatial multiplex transmission line has a plurality of second transmission lines. The first lens arrangement is optically coupled with the first spatial multiplex transmission line. The second lens arrangement is optically coupled with the second spatial multiplex transmission line. The first beam diameter conversion portion has a first end face and a second end face and arranged between the first spatial multiplex transmission line and the first lens arrangement. The first beam diameter conversion portion is configured such that an optical diameter at the second end face is larger than an optical diameter at the first end face.
    Type: Application
    Filed: February 28, 2020
    Publication date: September 10, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masato TANAKA, Hidehisa TAZAWA, Osamu SHIMAKAWA, Takafumi OHTSUKA
  • Patent number: 10761468
    Abstract: An image forming apparatus is provided. The image forming apparatus includes an image forming unit containing a special recording material and circuitry configured to control the image forming unit to form a hardly visible image on a recording medium with the special recording material. The hardly visible image is formed of a halftone dot image comprising isolated dots in a number smaller than that of isolated dots forming a visible image having the same image area ratio as the hardly visible image.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: September 1, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masato Tanaka, Keiji Kunimi
  • Patent number: 10732542
    Abstract: An image forming apparatus including an image forming unit, a unit holder, and circuitry is provided. The image forming unit includes a color toner unit, a replaceable black toner unit, and a replaceable special toner unit that form a color toner image, a black toner image, and a special toner image, respectively. The unit holder selectively and detachably holds the replaceable black toner unit or the replaceable special toner unit. The circuitry controls the image forming unit to perform: a normal operation, when the unit holder holds the replaceable black toner unit, that forms a color-black image; a special operation, when the unit holder holds the replaceable special toner unit, that forms a color-special image; and a toner amount increase control that increases an amount of the color toner per unit area in the color toner image in the special operation than that in the normal operation.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: August 4, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masato Tanaka, Keiji Kunimi, Masanori Kawasumi
  • Patent number: 10725420
    Abstract: An image forming apparatus including an image forming unit, a fixing device, and circuitry is provided. The image forming unit is configured to perform a special image forming operation that forms a color toner image and a special toner image with a color toner and a special toner, respectively, on a recording medium and a normal image forming operation that forms the color toner image without forming the special toner image on the recording medium. The fixing device is configured to fix the color toner image and the special toner image on the recording medium. The circuitry is configured to perform, in the special image forming operation, a toner amount suppression control that makes an amount of the color toner on the recording medium per unit area smaller than that in the normal image forming operation.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 28, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masato Tanaka, Keiji Kunimi, Masaki Yoshino, Kazumi Suzuki
  • Publication number: 20200186759
    Abstract: The purpose of the present invention is to provide a head mounted display for aircraft in which astigmatism is reduced so that a display image with a wide visual field can be observed. A reflection surface (10a) of a visor (10), onto which display light is projected from a projection optical system (12), does not have a spherical shape but an aspherical shape whose curvature in the vertical direction is smaller than in the horizontal direction. This difference in curvature eliminates the difference in optical power due to a difference in the incident angle on the reflection surface (10a) and reduces the amount of astigmatism. An intermediate image is formed in both the vertical and horizontal directions within the projection optical system (12) or in the middle of an optical path from the projection optical system (12) to the reflection surface (10a). This increases the degree of freedom of the arrangement of optical elements and allows for the reduction in size and weight of the device.
    Type: Application
    Filed: May 25, 2017
    Publication date: June 11, 2020
    Applicant: SHIMADZU CORPORATION
    Inventor: Masato TANAKA
  • Publication number: 20200144081
    Abstract: A substrate processing method includes a liquid discharging step of discharging liquid through a nozzle toward a predetermined supply region on the main surface of a substrate held on a substrate holding unit within a chamber, a humidified gas supplying step of supplying humidified gas with a humidity higher than the humidity within the chamber onto the main surface of the substrate to remove electrical charges carried on the substrate, and a spin-drying step of rotating the substrate about a predetermined rotational axis after the liquid discharging step to spin off the liquid component from the main surface of the substrate. The humidified gas supplying step is started before the start of the liquid discharging step and ended at a predetermined termination timing after the start of the liquid discharging step and before the spin-drying step.
    Type: Application
    Filed: April 17, 2018
    Publication date: May 7, 2020
    Inventors: Hiroki TSUJIKAWA, Masato TANAKA, Tsuyoshi OKUMURA, Atsuyasu MIURA, Makoto TAKAOKA, Nobuyuki MIYAJI, Kazuhiro FUJITA, Naoki SAWAZAKI, Takashi AKIYAMA, Yuya TSUCHIHASHI
  • Publication number: 20200081669
    Abstract: A machine-readable, non-transitory recording medium, an image forming apparatus, and an information processing apparatus. The machine-readable, non-transitory recording medium stores instructions that, when executed, cause the information processing apparatus to display a special color settings screen for setting an RGB value of drawing data to be printed in a special color included in print data to be transmitted to an image forming apparatus, generate the print data instructing printing of the RGB value set on the special color settings screen in the special color, and transmit the generated print data to the image forming apparatus.
    Type: Application
    Filed: August 23, 2019
    Publication date: March 12, 2020
    Inventors: Keiji Kunimi, Masato Tanaka, Hiroki Matsuura
  • Publication number: 20200067181
    Abstract: An antenna device includes an antenna board in which a conductor pattern is provided on each of both surfaces of a dielectric substrate. A linear element is provided on a first surface of the dielectric substrate. A slit antenna is provided on a second surface of the dielectric substrate opposite to the first surface. When the first surface and the second surface are superimposed on each other, the linear element and a slit of the slit antenna overlap with each other.
    Type: Application
    Filed: July 27, 2018
    Publication date: February 27, 2020
    Applicant: YOKOWO CO., LTD.
    Inventor: Masato TANAKA
  • Publication number: 20200053233
    Abstract: A reading device includes an imaging element and correcting circuitry. The imaging element is configured to receive light from an object selectively irradiated with visible light or invisible light. The correcting circuitry is configured to apply correction processing based on a difference in an optical characteristic between an invisible light region and a visible light region to an image signal in the invisible light region output from the imaging element and output the image signal corrected.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    Inventors: Masamoto NAKAZAWA, Tadaaki OYAMA, Masahiro ITOH, Masato TANAKA
  • Patent number: 10467489
    Abstract: A driver performing a lane check by looking back for safe driving can be alerted based on the driver's gaze deviating from a view area for usual driving. A distracted driving determination apparatus, a distracted driving determination method, and a program for distracted driving determination recorded on a recording medium compare a change pattern detected from changes in the gaze or face orientation of the driver with a predetermined reference pattern, and change a usual determination condition for detecting distracted driving to a temporary determination condition when the change pattern matches the reference pattern. This prevents the line check from being determined to be distracted driving.
    Type: Grant
    Filed: November 4, 2018
    Date of Patent: November 5, 2019
    Assignee: OMRON Corporation
    Inventors: Keisuke Yokota, Masato Tanaka, Yoshio Matsuura
  • Publication number: 20190317380
    Abstract: The present embodiment relates to an optical device or the like that is high in non-linearity and resistance to UV light and includes a structure allowing stable wavelength conversion. The optical device is comprised of glass containing SiO2 and comprises a repetitive structure including first sections being crystallized regions in which a radial polarization-ordered structure is formed and second sections being non-crystallized regions alternately arranged along a center axis extending from a center of a light-incidence end face toward a center of a light-emission end face.
    Type: Application
    Filed: June 25, 2019
    Publication date: October 17, 2019
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Shigehiro NAGANO, Masato SUZUKI, Masato TANAKA, Manabu SHIOZAKI, Hiroo KANAMORI
  • Publication number: 20190301909
    Abstract: A thermal flow sensor device includes a storing portion that stores information about the relationship between a valve opening and a flow rate, an instruction portion that transmits an instruction signal specifying at least two predefined valve openings to a controlling device that controls the valve, an acquiring portion that acquires the flow rate output value of the thermal flow sensor, a calculating portion that calculates the magnification between two flow rate output values acquired by the acquiring portion, acquires the magnification between the two flow rates corresponding to the two valve openings acquired from the storing portion, and calculates the ratio of the magnification between the two flow rates to the magnification between the two flow rate output values as the correction coefficient, and a correcting portion that corrects the flow rate by multiplying the flow rate output value of the thermal flow sensor by the correction coefficient.
    Type: Application
    Filed: March 13, 2019
    Publication date: October 3, 2019
    Inventors: Seishi NAKANO, Masato TANAKA
  • Patent number: 10432115
    Abstract: A motor driving control apparatus in embodiments includes: a first signal generator to generate a first signal representing any one rotation angle section of plural rotation angle sections according to a sensor signal that changes every predetermined rotation angle of a rotor; a measurement unit to measure a period of each of the rotation angle sections; a prediction unit to predict a period of a next rotation section based on one or plural measured rotation angle sections; a second signal generator to generate a second signal representing a relative rotation angle of the rotor in the next rotation angle section for each period obtained by dividing the predicted period by a predetermined number; and a third signal generator to generate a third signal corresponding to a rotation angle of the rotor based on the first and second signals.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: October 1, 2019
    Assignees: MICROSPACE CORPORATION, TAIYO YUDEN CO., LTD.
    Inventors: Masato Tanaka, Hiromi Hagiwara, Kazuo Asanuma, Hirokazu Shirakawa
  • Patent number: 10429753
    Abstract: An electrophotographic photoconductor comprises a support, an undercoat layer, a charge generation layer, and a hole transport layer in this order. The undercoat layer comprises an electron transport substance, and the charge generation layer comprises a gallium phthalocyanine crystal and an amide compound represented by formula (N1): where R1 represents a methyl group, a propyl group, or a vinyl group.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: October 1, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kaname Watariguchi, Masato Tanaka, Masataka Kawahara, Jumpei Kuno