Patents by Inventor Ryo Sakurai

Ryo Sakurai 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: 11279379
    Abstract: Provided is an assist apparatus for a vehicle leaving a parking space, including an automatic leaving execution unit configured to execute automatic leaving by automatic travel control mode of the vehicle and a switching control unit configured to switch driving of the vehicle from the automatic travel control mode to driver's driving operation mode, in which a state of the vehicle is determined and whether or not to perform a predetermined automatic travel control before switching the drive of the vehicle to the driver's driving operation mode is determined based on the determination result of the state of the vehicle.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: March 22, 2022
    Assignee: CLARION CO., LTD.
    Inventors: Ryo Sakurai, Yasuhiko Kodate, Toshiyuki Anzai, Katsumi Iwano
  • Publication number: 20210171099
    Abstract: A towing assist device includes a controller configured to assist reversing of a vehicle to which a trailer is coupled with a coupling tool, and a monitor configured to display a periphery of the coupling tool attached to a rear portion of the vehicle with a rear view at least when the vehicle reverses, wherein the controller includes an alarm angle calculator configured to calculate an alarm angle equal to or smaller than a jackknife angle causing a jackknife phenomenon by the vehicle and the trailer in reversing, and an alarm generator configured to give an alarm when a trailer angle between the vehicle and the trailer is equal to or larger than the alarm angle.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 10, 2021
    Inventors: Kensuke YAMAMOTO, Ryo SAKURAI
  • Publication number: 20200223448
    Abstract: Provided is an assist apparatus for a vehicle leaving a parking space, including an automatic leaving execution unit configured to execute automatic leaving by automatic travel control mode of the vehicle and a switching control unit configured to switch driving of the vehicle from the automatic travel control mode to driver's driving operation mode, in which a state of the vehicle is determined and whether or not to perform a predetermined automatic travel control before switching the drive of the vehicle to the driver's driving operation mode is determined based on the determination result of the state of the vehicle.
    Type: Application
    Filed: January 9, 2020
    Publication date: July 16, 2020
    Applicant: CLARION CO., LTD.
    Inventors: Ryo SAKURAI, Yasuhiko KODATE, Toshiyuki ANZAI, Katsumi IWANO
  • Patent number: 10352827
    Abstract: A tire contact state estimation method includes: an information acquisition step of acquiring information of the tire; a correlation strength calculation step of calculating a first correlation strength between the rotational velocity and the braking and driving force, and also calculating a second correlation strength between the slip angle and the generated lateral force; a change detection step of detecting whether the first correlation strength has increased or decreased by a first threshold or more with respect to a predetermined first reference value, and also detecting whether the second correlation strength has increased or decreased by a second threshold or more with respect to a predetermined second reference value; and an estimation step of estimating at least two of the following: a condition of a road surface in contact with the tire, a tire internal pressure state, and a tire abrasion state.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: July 16, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Hiroshi Kato, Takahisa Kamikura, Ryo Sakurai, Yasushi Hanatsuka, Yasumichi Wakao
  • Publication number: 20180202474
    Abstract: To provide a hydraulic actuator having sufficient durability in a case in which high pressure is applied such as a case in which oil pressure driving is adopted. The hydraulic actuator includes a sealing mechanism (200). A tube (110) is inserted into a body portion (211) of a sealing member (210). A first locking ring (220) locks a sleeve (120) at an outer side of the body portion (211) in the radial direction DR and at a position adjacent to a flange portion (212). A caulking member (230) caulks the tube (110), the sleeve (120) located at the outer side of the tube in the radial direction DR, a first folded portion (120a) in conjunction with the sealing member (210).
    Type: Application
    Filed: June 30, 2016
    Publication date: July 19, 2018
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shingo OONO, Ryo SAKURAI, Takayuki SATO
  • Publication number: 20160109331
    Abstract: A tire contact state estimation method includes: an information acquisition step of acquiring information of the tire; a correlation strength calculation step of calculating a first correlation strength between the rotational velocity and the braking and driving force, and also calculating a second correlation strength between the slip angle and the generated lateral force; a change detection step of detecting whether the first correlation strength has increased or decreased by a first threshold or more with respect to a predetermined first reference value, and also detecting whether the second correlation strength has increased or decreased by a second threshold or more with respect to a predetermined second reference value; and an estimation step of estimating at least two of the following: a condition of a road surface in contact with the tire, a tire internal pressure state, and a tire abrasion state.
    Type: Application
    Filed: May 12, 2014
    Publication date: April 21, 2016
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Hiroshi KATO, Takahisa KAMIKURA, Ryo SAKURAI, Yasushi HANATSUKA, Yasumichi WAKAO
  • Publication number: 20120200927
    Abstract: An optical element having anti-reflection film includes an anti-reflection film having a reflection characteristic expressed by a function Fm(x), which is on an mth optical surface, and an anti-reflection film having a reflection characteristic expressed by a function Fn(x), which is on an nth optical surface. At least one of the Fm(x) and Fn(x) functions has the maximum value of reflectance in a predetermined wavelength, and has a characteristic curve of W-shape, and the other of the Fm(x) and Fn(x) function has a wavelength that negates at least one maximum value of the Fm(x) and the Fn(x) functions. The anti-reflection film having reflection characteristic expressed by the function Fm(x) is on an optical surface on a side nearer to the light source, than the anti-reflection film having reflectance characteristic expressed by the function Fn(x), where, m and n are positive integers, and m<n.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 9, 2012
    Applicant: Olympus Corporation
    Inventors: Takeshi Deguchi, Masanori Koyama, Ryo Sakurai, Nobuyoshi Toyohara
  • Publication number: 20110279423
    Abstract: Provided is an information display panel, which includes: a transparent first substrate having transparent pixel electrodes formed in an information display screen region, first connecting electrodes formed as line electrodes drawn from the pixel electrodes to a region outside the information display screen region, and third connecting electrode formed as different line electrodes that are not connected to the first connecting electrodes; and a film-like second substrate having pixel electrodes formed in the information display screen region, and second connecting electrodes formed as line electrodes drawn from the pixel electrodes to a region outside the information display screen region, in which the transparent pixel electrodes on the transparent first substrate and the pixel electrodes on the second substrate are opposed to each other so as to form a space between the first substrate and the second substrate opposing to each other, the space having a display media sealed therein in the information display
    Type: Application
    Filed: December 25, 2009
    Publication date: November 17, 2011
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shingo Ohno, Kanji Tanaka, Ryo Sakurai
  • Publication number: 20110261434
    Abstract: Provided is an information display panel, in which transparent stripe electrodes on a first substrate and stripe electrodes on a second substrate are orthogonally opposed to each other, and at least two kinds of display media configured as particle groups containing electrically charged particles are sealed in a space between the first substrate and the second substrate which are opposed to each other in the information display screen region while the line electrodes drawn from the stripe electrodes on the first substrate and the L-shaped line electrodes formed on the third substrate are electrically connected to each other, so that, in a configuration where the first substrate, the second substrate, and the film-like third substrate having the L-shaped line electrodes formed thereon are arranged as being superposed one another in the stated order, the stripe electrodes opposing to each other forms an electrode pair, to which a voltage controlled by the driver circuit is applied so as to generate an electric
    Type: Application
    Filed: December 18, 2009
    Publication date: October 27, 2011
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shingo Ohno, Kanji Tanaka, Ryo Sakurai
  • Patent number: 8026506
    Abstract: In a thin-film transistor comprising respective elements of: three electrodes of a source electrode, a drain electrode and a gate electrode; a channel layer; and a gate insulating film, at least the channel layer is formed by a metal oxide film including indium. Therefore, it is possible to obtain the thin-film transistor, which can manufacture an element to a polymer substrate without using a high temperature process and which can achieve a high performance and a high reliability at low cost.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: September 27, 2011
    Assignee: Bridgestone Corporation
    Inventors: Osamu Shiino, Yoshinori Iwabuchi, Ryo Sakurai, Tatsuya Funaki
  • Publication number: 20110176198
    Abstract: A plurality of cells are formed by a polygonal cell having even number of sides being at least six sides, and a plurality of cells being constructed by a polygonal shape as a unit are arranged in a display region regularly, so as to construct the dot matrix type information display panel. Therefore, it is possible to provide a dot matrix type information display panel: in which lines in a longitudinal and lateral directions are not so emphasized when an image information such as characters and so on which are displayed based on a line; in which a dot does not look in such a manner that a quadrangular shape collapses and an interference fringe (moire) is not generated as in the case of the honeycomb-shaped partition walls; and in which an image such as sharp and natural characters and so on which are displayed based on a line can be displayed.
    Type: Application
    Filed: July 24, 2009
    Publication date: July 21, 2011
    Inventors: Kanji Tanaka, Ryo Sakurai, Shingo Ohno, Mitsuhiro Nishida, Masayuki Nishii
  • Publication number: 20110176199
    Abstract: An information display device, in which a display medium 3W, 3B having an optical reflectivity and comprised of a particle group containing particles that can be electrically driven is sealed between two panel substrates 5, 6 arranged so as to face each other, at least one of which panel substrates is transparent, and, the display medium is electrically moved via a pair of electrodes provided to the panel substrates and formed by the electrodes 5, 6, thereby to display information, in which the information display device has a structure in which a back side substrate 1, which is one of the two substrates, is connected with a wiring substrate 10; a first through-hole 7 penetrating the back side substrate for electrically connecting electrodes 5-1 and 5-2 provided on a front and a rear surfaces of the back side substrate is formed on the back side substrate, and the wiring substrate 10 is connected with the electrode 5-2 on the rear surface side within an area of the back side substrate; and, a second through-h
    Type: Application
    Filed: August 25, 2009
    Publication date: July 21, 2011
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Ryo Sakurai, Shingo Ohno, Mitsuhiro Nishida, Kanji Tanaka, Masayuki Nishii
  • Patent number: 7978397
    Abstract: In an information display panel, in which display media are sealed between a transparent front substrate and a rear substrate, and, in which the display media, to which an electrostatic field is applied from electrodes arranged respectively to the front substrate and the rear substrate, are made to move so as to display information such as an image, the rear substrate is constituted by a flexible material, and a metal electrode is formed on the rear substrate by a patterning process using a vapor deposition and a sputtering or a metal electrode is formed on the rear substrate by effecting a patterning process to a metal film formed by a vapor deposition or a sputtering. In this manner, it is possible to obtain an information display panel, which can improve a flexibility of the rear substrate with the electrode by an inexpensive cost, achieve an easy handling of the substrate and decrease a panel breakage due to a detachment of two substrates.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: July 12, 2011
    Assignee: Bridgestone Corporation
    Inventor: Ryo Sakurai
  • Publication number: 20100156859
    Abstract: A display unit having a display memory property is constituted to be detachable from an attaching/detaching mechanism provided on a drive circuit substrate, so as to be attached to the attaching/detaching mechanism of the drive circuit substrate for rewrite of display information, and detached from the attaching/detaching mechanism of the drive circuit substrate after rewrite and moved to elsewhere while maintaining information displayed. Moreover, since it is constituted such that an actuation driver, having an expensive IC is mounted thereon, can be replaced rather than to be discarded or a drive circuit substrate can be replaced rather than to be discarded in a case where the display unit for displaying information such as an image causes a failure, it thereby achieves improvement of resource use efficiency by reusing the actuation driver having the expensive IC mounted thereon or the drive circuit substrate.
    Type: Application
    Filed: June 20, 2008
    Publication date: June 24, 2010
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Ryo Sakurai, Shingo Ohno, Mitsuhiro Nishida, Kanji Tanaka, Masayuki Nishii
  • Patent number: 7729038
    Abstract: In the method of manufacturing an information display panel, in which at least one group of display media having optical reflectance and charge characteristics and consisting of at least one or more groups of particles, are sealed in a cell formed by partition walls between two substrates, at least one substrate being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information such as an image, a display media filling step for filling the display media in the cell includes the steps of: setting a screen over the partition walls; arranging the display media on the screen; and moving a plate member on the screen under such a condition that the plate member is contacted to the screen.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: June 1, 2010
    Assignee: Bridgestone Corporation
    Inventors: Shingo Ohno, Kanji Tanaka, Ryo Sakurai, Yoshitomo Masuda
  • Patent number: 7679815
    Abstract: In the information display panel, in which one or more groups of display media are sealed between opposed two substrates, at least one substrate being transparent, and, in which the display media, to which an electrostatic field generated between the substrates is applied, are made to move so as to display information such as an image, at least one substrate of the two substrates (both substrates in the figure) is a laminated substrate in which a first substrate, a low elastic layer and a second substrate are successively laminated from an outer surface, so that a stress concentration at a rib adhesion portion and so on of a partition wall can be reduced, If the laminated substrate with a laminated construction including a buffer layer for reducing stress concentration, it is possible to provide the information display panel, which can improve a mechanical strength with respect to an external force.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: March 16, 2010
    Assignee: Bridgestone Corporation
    Inventors: Taichi Kobayashi, Ryo Sakurai, Takanori Shoji
  • Publication number: 20100025680
    Abstract: In a thin-film transistor comprising respective elements of: three electrodes of a source electrode, a drain electrode and a gate electrode; a channel layer; and a gate insulating film, at least the channel layer is formed by a metal oxide film including indium. Therefore, it is possible to obtain the thin-film transistor, which can manufacture an element to a polymer substrate without using a high temperature process and which can achieve a high performance and a high reliability at low cost.
    Type: Application
    Filed: January 30, 2008
    Publication date: February 4, 2010
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Osamu Shino, Yoshinori Iwabuchi, Ryo Sakurai, Tatsuya Funaki
  • Patent number: 7580179
    Abstract: A method of manufacturing an information display device having an information display panel, in which display media are sealed between two substrates, at least one substrate being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information such as an image, is characterized in that the improvement comprises, in the case of electrically connecting an electrode arranged on one substrate and an electrode arranged on the other substrate at an outer portion of an information display portion of the information display panel, the steps of: arranging an adhesive including conductive spacer particles having a diameter smaller than a distance between the electrodes arranged on the substrates at a predetermined portion between the substrates; and pressing a portion of the substrate, to which the adhesive is arranged, under pressure; so that the electrode arranged on one substrate is electrically connected to the electrode arranged on the other s
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: August 25, 2009
    Assignee: Bridgestone Corporation
    Inventors: Ryo Sakurai, Takanori Shoji, Hidetoshi Hiraoka, Taichi Kobayashi
  • Publication number: 20090059347
    Abstract: In an information display panel, in which display media are sealed in a plurality of cells formed by partition walls between two opposed substrates, at least one of two substrates being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information such as an image, a tensile elastic modulus of the partition wall is controlled in a range of 10-100 MPa and a breaking elongation of the partition wall is controlled in a range of 2-500%.
    Type: Application
    Filed: April 11, 2006
    Publication date: March 5, 2009
    Applicant: Bridgestone Corporation
    Inventors: Hidetoshi Hiraoka, Ryo Sakurai
  • Patent number: 7495820
    Abstract: An information display device has an information display plate where at least one or more kinds of particles are sealed between cells formed by a partition wall, the cells being between two opposite substrates at least either of which is transparent. At least either of electrodes is provided on a substrate, and an electric field is applied to the particles by the electrodes to move the particles, causing information such as an image to be displayed on the display plate. The surfaces of the substrates are smoothed by making D?2H satisfied, with D being the diameter of a particle (a particle forming the particles), H the height of the electrodes. This thins the electrodes as much as possible (making the height of the electrodes small) and smoothes the surfaces of the substrates, and as a result, the information display device after an endurance test has an improved contrast ratio.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: February 24, 2009
    Assignee: Bridgestone Corporation
    Inventors: Ryo Sakurai, Takanori Shoji, Taichi Kobayashi, Hidetoshi Hiraoka