Patents by Inventor Hiroshi Yokoyama

Hiroshi Yokoyama 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: 20210240274
    Abstract: A system for interpreting gestures may include one or more processors, at least three Doppler radar devices, and a memory device. The memory device may have a receiving module, a cube generating module, and a classifying module. The receiving module may include instructions that cause the one or more processors to receive Doppler information from the at least three Doppler radar devices. The cube generating module may include instructions that cause the one or more processors to generate a micro-Doppler cube by projecting Doppler information in X, Y, and Z-directions over a period of time into the micro-Doppler cube. The classifying module may include instructions that cause the one or more processors to classify one or more gestures performed by an extremity when located in the volume into a category of a plurality of categories based on the micro-Doppler cube.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 5, 2021
    Inventors: Paul Donald Schmalenberg, Hiroshi Yokoyama
  • Patent number: 10962840
    Abstract: A photoalignment method includes photoaligning a first liquid crystal cell and using the photoaligned first liquid crystal cell as a mask in the photoalignment of a second liquid crystal cell. The method may increase spatial dynamic range or decrease pitch.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: March 30, 2021
    Assignee: Kent State University
    Inventors: Hiroshi Yokoyama, Mengfei Wang
  • Patent number: 10871680
    Abstract: A liquid crystal device includes a light source, a first transparent substrate, a first transparent electrode, a switchable or tunable micropatterned alignment layer arranged in an array of pixels, a liquid crystal layer, a fixed alignment layer, a second transparent electrode, and a second transparent substrate. The switchable micropatterned alignment layer is disposed between the liquid crystal layer and one of the first transparent substrate and the second transparent substrate. The fixed alignment layer is disposed between the liquid crystal layer and one of the first transparent substrate and the second transparent substrate. Light from the light source is not visible outside the liquid crystal device when the switchable or tunable micropatterned alignment layer is in an off-state.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: December 22, 2020
    Inventors: Hiroshi Yokoyama, Nikolaus Glazar
  • Patent number: 10814837
    Abstract: An object of the present invention is to suppress variations in shape of flow channels to have an enlarged flow channel. When an attachment main body 51 of a lid member 50 is attached to a recessed attachment part 46 of a main body member 40, a pair of flange parts 52 provided to the lid member 50 abuts on the main body member 40. Therefore, the insertion amount of the attachment main body 51 into the recessed attachment part 46 in each product can be maintained approximately constant while enlarging a main channel MC and a pair of sub channels SS1 and SS2, which are formed by the main body member 40 and the lid member 50, and variations in shape of these flow channels can be reliably suppress.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: October 27, 2020
    Assignee: Mitsuba Corporation
    Inventors: Takao Umezawa, Atsushi Otani, Hiroshi Yokoyama
  • Patent number: 10813914
    Abstract: A composition for controlling or preventing microsporidia in a fish or a seafood is prepared by using, as an active ingredient, at least one compound selected from the group consisting of compounds represented by the following chemical formula (I): (wherein, R2, R4, R5, R6 and R7 each independently represent a specific substituent), pharmaceutically acceptable salts thereof, and compounds generating the compounds represented by the chemical formula (I) by metabolism in the body of the fish or the seafood. By using this composition for controlling or preventing microsporidia in a fish to or a seafood, a method for controlling or preventing microsporidia in a fish or a seafood is provided, which prevents microsporidian infection in the muscle or organs of the fish or the seafood, and/or suppresses the growth of microsporidia in the muscle or organs of the fish or the seafood, and/or highly effective in eliminating microsporidia from the body of the fish or the seafood and also excellent in safety.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: October 27, 2020
    Assignees: MARUHA NICHIRO CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Yukitoki Fujita, Hiroshi Yokoyama, Hiroki Ogawa
  • Publication number: 20200278283
    Abstract: An apparatus for measuring normal and shear stress at a surface. The apparatus includes a substrate; and a plurality of sensing units on the substrate. Each sensing unit includes a mechanical transducer having a receiving surface and a sensing surface; and a plurality of normal force sensors between the sensing surface and the substrate.
    Type: Application
    Filed: September 25, 2018
    Publication date: September 3, 2020
    Applicant: Kent State University
    Inventors: Mykhailo Pevnyi, Tianyi Guo, Fred Minkowski, Vincent Hetherington, Hiroshi Yokoyama, Peter Palffy-Muhoray
  • Publication number: 20200233270
    Abstract: A photoalignment method includes photoaligning a first liquid crystal cell and using the photoaligned first liquid crystal cell as a mask in the photoalignment of a second liquid crystal cell. The method may increase spatial dynamic range or decrease pitch.
    Type: Application
    Filed: September 25, 2018
    Publication date: July 23, 2020
    Applicant: Kent State University
    Inventors: Hiroshi Yokoyama, Mengfei Wang
  • Patent number: 10449604
    Abstract: In an injection cylinder which can be connected with a plunger, the internal portion of the cylinder part is partitioned by a piston into a rod-side chamber on the side of the piston rod and a head-side chamber on the opposite side. An accumulator can supply a hydraulic fluid to the head-side chamber. A head-use pressure sensor can detect a pressure of the head-side chamber. A flow control valve can control a flow rate of the hydraulic fluid discharged from the rod-side chamber. A control device includes an OP control part which starts open control driving the flow control valve to the opening direction after the start of supply of the hydraulic fluid from the accumulator to the head-side chamber conditional on the detection pressure of the head-use pressure sensor rising up to the predetermined set value.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: October 22, 2019
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventor: Hiroshi Yokoyama
  • Publication number: 20190111027
    Abstract: A composition for controlling or preventing microsporidia in a fish or a seafood is prepared by using, as an active ingredient, at least one compound selected from the group consisting of compounds represented by the following chemical formula (I): (wherein, R2, R4, R5, R6 and R7 each independently represent a specific substituent), pharmaceutically acceptable salts thereof, and compounds generating the compounds represented by the chemical formula (I) by metabolism in the body of the fish or the seafood. By using this composition for controlling or preventing microsporidia in a fish to or a seafood, a method for controlling or preventing microsporidia in a fish or a seafood is provided, which prevents microsporidian infection in the muscle or organs of the fish or the seafood, and/or suppresses the growth of microsporidia in the muscle or organs of the fish or the seafood, and/or highly effective in eliminating microsporidia from the body of the fish or the seafood and also excellent in safety.
    Type: Application
    Filed: March 30, 2017
    Publication date: April 18, 2019
    Applicants: MARUHA NICHIRO CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Yukitoki FUJITA, Hiroshi YOKOYAMA, Hiroki OGAWA
  • Patent number: 10105754
    Abstract: A flow rate control valve configuring a meter-out circuit of an injection cylinder is an overlap type where a first port starts to be opened by a spool passing through an overlapping range. The control device holds a characteristic table linking a command value of a control command to the flow rate control valve and a velocity of a plunger including also the movement of the plunger which occurs due to a gap flow even if the spool is located in the overlapping range. Further, the control device specifies the command value corresponding to the target velocity set by operation of the input device based on the characteristic table, performs open control based on this command value, then performs the feedback control for realizing the target velocity.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: October 23, 2018
    Assignee: TOSHIBA KIKAI KABUSHIKI KAISHA
    Inventors: Hiroshi Yokoyama, Shunsuke Takekawa
  • Publication number: 20180290207
    Abstract: In an injection cylinder which can be connected with a plunger, the internal portion of the cylinder part is partitioned by a piston into a rod-side chamber on the side of the piston rod and a head-side chamber on the opposite side. An accumulator can supply a hydraulic fluid to the head-side chamber. A head-use pressure sensor can detect a pressure of the head-side chamber. A flow control valve can control a flow rate of the hydraulic fluid discharged from the rod-side chamber. A control device includes an OP control part which starts open control driving the flow control valve to the opening direction after the start of supply of the hydraulic fluid from the accumulator to the head-side chamber conditional on the detection pressure of the head-use pressure sensor rising up to the predetermined set value.
    Type: Application
    Filed: April 4, 2018
    Publication date: October 11, 2018
    Applicant: Toshiba Kikai Kabushiki Kaisha
    Inventor: Hiroshi YOKOYAMA
  • Publication number: 20180284502
    Abstract: A liquid crystal device includes a light source, a first transparent substrate, a first transparent electrode, a switchable or tunable micropatterned alignment layer arranged in an array of pixels, a liquid crystal layer, a fixed alignment layer, a second transparent electrode, and a second transparent substrate. The switchable micropatterned alignment layer is disposed between the liquid crystal layer and one of the first transparent substrate and the second transparent substrate. The fixed alignment layer is disposed between the liquid crystal layer and one of the first transparent substrate and the second transparent substrate. Light from the light source is not visible outside the liquid crystal device when the switchable or tunable micropatterned alignment layer is in an off-state.
    Type: Application
    Filed: September 29, 2016
    Publication date: October 4, 2018
    Applicant: Kent State University
    Inventors: Hiroshi Yokoyama, Nikolaus Glazar
  • Patent number: 10022902
    Abstract: A control device of an injection apparatus outputs a control command to a hydraulic pressure device to perform injection by supplying hydraulic fluid to the back of an injection piston 15 from an accumulator 25 and, at this time, to execute speed control for controlling the speed of the plunger by an opening degree of an injection control valve. Further, the control device outputs a control command to the hydraulic pressure device to perform boosting by opening a booster valve to supply hydraulic fluid to the back of the booster piston and pressurizing the hydraulic fluid behind the injection piston by the booster piston and, at this time, to execute pressure control for controlling the pressure of the molding material by an opening degree of the injection control valve. Further, the control device can start outputting a control command for pressure control after start of outputting a control command for opening the booster valve in transition from injection to boosting.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: July 17, 2018
    Assignee: TOSHIBA KIKAI KABUSHIKI KAISHA
    Inventors: Kazuyasu Takei, Ryusuke Nakata, Hiroshi Yokoyama
  • Patent number: 9803645
    Abstract: A cooling fan includes a boss section (12) connected to a rotary drive source, a plurality of blades (13) protruding outward from the boss section in a radial direction, and a cylindrical ring member (14) configured to annularly connect the vicinities of end sections outside in the radial direction of the plurality of blades. The plurality of blades (13) protruding outward from the boss section (12) in the radial direction are connected by the cylindrical ring member (14) in the vicinity of the end section outside in the radial direction. An air inlet groove (16) is formed at an end section in an axial direction of an air suction side of the ring member (14). The air inlet groove (16) is disposed between front regions in the rotation direction of all of the blades (13) on the ring member (14) and front regions in the rotation direction of the blades (13) adjacent thereto.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: October 31, 2017
    Assignee: MITSUBA CORPORATION
    Inventors: Hidetake Ota, Hiroshi Yokoyama, Yukio Osawa
  • Publication number: 20170282243
    Abstract: A flow rate control valve configuring a meter-out circuit of an injection cylinder is an overlap type where a first port starts to be opened by a spool passing through an overlapping range. The control device holds a characteristic table linking a command value of a control command to the flow rate control valve and a velocity of a plunger including also the movement of the plunger which occurs due to a gap flow even if the spool is located in the overlapping range. Further, the control device specifies the command value corresponding to the target velocity set by operation of the input device based on the characteristic table, performs open control based on this command value, then performs the feedback control for realizing the target velocity.
    Type: Application
    Filed: February 2, 2017
    Publication date: October 5, 2017
    Applicant: TOSHIBA KIKAI KABUSHIKI KAISHA
    Inventors: HIROSHI YOKOYAMA, SHUNSUKE TAKEKAWA
  • Patent number: 9762993
    Abstract: It is an object of the present invention is to smoothen air flow at the time of vibrations of the diaphragm, and to suppress variations in acoustic characteristics. Since the inclined surface 37c of the washer 37, which forms the air flow channel 50, is an inclined surface having a diameter gradually reduced with distance from the diaphragm 35 in the axial direction of the movable iron core 36, compared with the conventional step-shaped air flow channel having vertical surfaces, air flow in the air flow channel 50 can be smoothened. Therefore, disturbance in air flow is not easily generated in the air flow channel 50, and variations in acoustic characteristics of the horn apparatus 10 can be suppressed.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: September 12, 2017
    Assignee: Mitsuba Corporation
    Inventors: Yoshikazu Kobayashi, Hiroshi Yokoyama, Ryota Matsukura
  • Publication number: 20170165911
    Abstract: A three-dimensional modeling apparatus models a three-dimensional object by lamination modeling in an air-tight process chamber. The three-dimensional modeling apparatus includes an elevation guide chamber provided adjacent to the process chamber, an elevation stage provided so as to be capable of being raised and lowered in the elevation guide chamber, and a communication pipe communicating between a space below the elevation stage in the elevation guide chamber and the process chamber.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 15, 2017
    Inventors: Tomohiro KIRIYAMA, Mitsuhisa KITAMURA, Hiroshi YOKOYAMA, Koichi NOGUCHI
  • Publication number: 20170144424
    Abstract: A three-dimensional modeling apparatus 10, 11 includes a three-dimensional modeling unit 20, 40 and a control unit 15. The three-dimensional modeling unit 20, 40 is configured to stack unit layers ul made of a material solidified in a predetermined solidification pattern thereby to produce a three-dimensional object O. The control unit 15 is configured to correct a sectional pattern sp at each level in a model M along a lamination direction, allowing for deformation in modeling based on at least one of a material characteristic, a modeling condition, and a facility condition, thereby to determine the solidification pattern corresponding to the sectional pattern sp.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 25, 2017
    Inventors: Tomohiro KIRIYAMA, Kenji ABE, Hiroshi KURIMOTO, Masashi KUWANO, Masakuni TSUTSUI, Hiroshi YOKOYAMA
  • Publication number: 20160200022
    Abstract: A control device of an injection apparatus outputs a control command to a hydraulic pressure device to perform injection by supplying hydraulic fluid to the back of an injection piston 15 from an accumulator 25 and, at this time, to execute speed control for controlling the speed of the plunger by an opening degree of an injection control valve. Further, the control device outputs a control command to the hydraulic pressure device to perform boosting by opening a booster valve to supply hydraulic fluid to the back of the booster piston and pressurizing the hydraulic fluid behind the injection piston by the booster piston and, at this time, to execute pressure control for controlling the pressure of the molding material by an opening degree of the injection control valve. Further, the control device can start outputting a control command for pressure control after start of outputting a control command for opening the booster valve in transition from injection to boosting.
    Type: Application
    Filed: January 8, 2016
    Publication date: July 14, 2016
    Inventors: Kazuyasu TAKEI, Ryusuke NAKATA, Hiroshi YOKOYAMA
  • Publication number: 20160080860
    Abstract: It is an object of the present invention is to smoothen air flow at the time of vibrations of the diaphragm, and to suppress variations in acoustic characteristics. Since the inclined surface 37c of the washer 37, which forms the air flow channel 50, is an inclined surface having a diameter gradually reduced with distance from the diaphragm 35 in the axial direction of the movable iron core 36, compared with the conventional step-shaped air flow channel having vertical surfaces, air flow in the air flow channel 50 can be smoothened. Therefore, disturbance in air flow is not easily generated in the air flow channel 50, and variations in acoustic characteristics of the horn apparatus 10 can be suppressed.
    Type: Application
    Filed: September 9, 2015
    Publication date: March 17, 2016
    Inventors: Yoshikazu Kobayashi, Hiroshi Yokoyama, Ryota Matsukura