Patents by Inventor Ryohei Yamamoto

Ryohei Yamamoto 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: 10886127
    Abstract: A method of producing a wafer includes forming a peel-off layer in a hexagonal single-crystal ingot by applying a laser beam having a wavelength transmittable through the ingot while positioning a focal point of the laser beam in the ingot at a depth corresponding to the thickness of a wafer to be produced from an end face of the ingot, generating ultrasonic waves from an ultrasonic wave generating unit positioned in facing relation to the wafer to be produced across a water layer interposed therebetween, thereby to break the peel-off layer, and detecting when the wafer to be produced is peeled off the ingot based on a change that is detected in the height of an upper surface of the wafer to be produced by a height detecting unit positioned above the upper surface of the wafer to be produced across the water wafer interposed therebetween.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: January 5, 2021
    Assignee: DISCO CORPORATION
    Inventors: Ryohei Yamamoto, Kazuyuki Hinohara
  • Publication number: 20200391327
    Abstract: A method for manufacturing an SiC wafer from an SiC ingot includes a verifying step of applying a test laser beam to the SiC ingot in a predetermined area with the focal point of the test laser beam set inside the SiC ingot at a predetermined depth from the end surface of the SiC ingot. The test laser beam has a transmission wavelength to SiC, thereby forming a test separation layer inside the SiC ingot at the predetermined depth. The test separation layer has a test modified portion where SiC is decomposed into Si and C and test cracks extend from the test modified portion along a c-plane in the SiC ingot. Whether or not the test cracks have been properly formed is verified. When verifying, the power of the test laser beam is changed to set a proper power at which the test cracks are properly formed.
    Type: Application
    Filed: June 3, 2020
    Publication date: December 17, 2020
    Inventors: Ryohei YAMAMOTO, Shuichi TORII
  • Patent number: 10828726
    Abstract: Disclosed herein is an SiC wafer producing method for producing an SiC wafer from a single crystal SiC ingot. The SiC wafer producing method includes a wafer producing step of separating a part of the ingot along a separation layer as an interface. The wafer producing step includes the steps of immersing the ingot in a liquid and applying the ultrasonic wave from an ultrasonic vibrator through the liquid to the ingot, the ultrasonic wave having a frequency greater than or equal to a critical frequency close to the natural frequency of the ingot.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: November 10, 2020
    Assignee: DISCO CORPORATION
    Inventors: Kazuya Hirata, Ryohei Yamamoto
  • Publication number: 20200346972
    Abstract: The present invention relates to a base material that comes into contact with water and contains a base material main body and a surface layer provided on at least a part of a surface that comes into contact with water of the base material main body, (1) in which the surface layer is composed of a cured product of a composition containing a compound having a biocompatible moiety and a reactive silyl group, the biocompatible moiety has a specific structure, the composition has a content of the biocompatible moiety being 25 to 83% by mass and a content of the reactive silyl group being 2 to 70% by mass, in a solid component, or (2) in which the surface layer has an elastic modulus showing a measured value in water being 0.1% to 63% with respect to a measured value after drying in the air.
    Type: Application
    Filed: July 17, 2020
    Publication date: November 5, 2020
    Applicant: AGO Inc
    Inventors: Hajime EGUCHI, Kyoko YAMAMOTO, Ryohei KOGUCHI, Yosuke AMINO, Noriko TANABE
  • Publication number: 20200343102
    Abstract: A method for producing a wafer from a hexagonal single crystal ingot includes: planarizing an upper surface of the hexagonal single crystal ingot; applying a laser beam of such a wavelength as to be transmitted through the ingot, with a focal point positioned in an inside of a region not to be formed with devices of a wafer to be produced from the upper surface of the ingot which has been planarized, to form a production history; and applying a laser beam of such a wavelength as to be transmitted through the hexagonal single crystal ingot with a focal point of the laser beam positioned at a depth corresponding to a thickness of the wafer to be produced from the upper surface of the hexagonal single crystal ingot which has been planarized, to form an exfoliation layer.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 29, 2020
    Inventors: Kazuya HIRATA, Ryohei YAMAMOTO
  • Publication number: 20200330653
    Abstract: To provide a medical device, whereby the non-specific absorption amount is reduced, its durability is excellent and eluents from the surface layer are reduced. The medical device comprises a device substrate and a surface layer provided on at least part of the surface of the device substrate in contact with water, wherein at least part of the surface of the device substrate is made of an inorganic material, the surface layer is made of a cured product of a compound having a biocompatible group and an alkoxysilyl group, the content of the biocompatible group in the compound is from 25 to 83% by mass, and the content of the alkoxysilyl group is from 2 to 70% by mass.
    Type: Application
    Filed: July 1, 2020
    Publication date: October 22, 2020
    Applicant: AGC Inc.
    Inventors: Ryohei Koguchi, Hajime Eguchi, Kyoko Yamamoto
  • Patent number: 10806863
    Abstract: A needleless syringe comprises a main syringe body which is a main body thereof and which has, in the main body, a sliding movement passage connected to an opening provided on a front end surface of the main body; a holding unit which has an accommodating unit for accommodating an injection objective substance so that the injection objective substance is releasable; and a driver that is configured to apply energy to the holding unit in order to allow the holding unit to slide toward the opening. When the energy is applied by the driver to the holding unit disposed at the initial position, the holding unit slides in the sliding movement passage to abut against the opening at the abutment position, and thus the injection objective substance accommodated in the accommodating unit is discharged via the opening. Accordingly, the high injection performance of the needleless syringe is appropriately exhibited.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: October 20, 2020
    Assignee: Daicel Corporation
    Inventors: Ryohei Yamada, Tomohide Fujiwara, Yuzo Yamamoto
  • Patent number: 10799987
    Abstract: Disclosed herein is a laser processing apparatus for forming a separation layer inside an ingot by applying a laser beam to an end surface of the ingot in the condition where the focal point of the laser beam is set inside the ingot, the laser beam having a transmission wavelength to the ingot. The laser processing apparatus includes a holding unit for holding the ingot, a moving unit for moving the holding unit in a direction parallel to the end surface of the ingot held by the holding unit, a laser beam applying unit for applying the laser beam to the ingot held by the holding unit, an imaging unit for detecting the position of the ingot in the direction parallel to the end surface of the ingot, and a height detecting unit for detecting the height of the end surface of the ingot held by the holding unit.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: October 13, 2020
    Assignee: DISCO CORPORATION
    Inventors: Kentaro Iizuka, Koyo Honoki, Shuichi Torii, Yutaka Kobayashi, Ryohei Yamamoto, Kazuya Hirata
  • Publication number: 20200307155
    Abstract: A double-sided pressure-.sensitive-adhesive-layer-attached polarizing film is disclosed having a polarizing film nearest to a viewer-side of an nnage display device, a pressure-sensitive adhesive layer A located on the viewer-side of the polarizing film, and a pressure-sensitive adhesive layer B on a side of the polarizing film that is opposite to the pressure-sensitive adhesive layer A. The pressure-sensitive adhesive layers A and B are equipped with separators SA and SB, respectively. The polarizing film is a single-side protected polarizing film having a polarizer of 15 pm or less thickness and having a transparent protective film on only a single side of the polarizer. The pressure-sensitive adesive layer B is located on the transparent protective film side of the single-side protected polarizing film. The pressure-sensitive adhesive layer A has a thickiess of 25 ?m or more: and the pressure-sensitive adhesive layer B has a thickness of 25 ?m or less.
    Type: Application
    Filed: June 14, 2016
    Publication date: October 1, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Atsushi Yasui, Shou Takarada, Shinya Yamamoto, Ryohei Sawazaki
  • Publication number: 20200313650
    Abstract: An acoustic wave device includes: a piezoelectric substrate: a pair of comb-shaped electrodes located on the piezoelectric substrate, each of the comb-shaped electrodes including a plurality of electrode fingers; a support substrate having protruding portions and/or recessed portions in a region overlapping with the pair of comb-shaped electrodes in plan view, the protruding portions and/or recessed portions being regularly arranged; and an insulating layer directly or indirectly bonded between the piezoelectric substrate and the support substrate, a boundary face between the insulating layer and the support substrate being provided along the protruding portions and/or the recessed portions.
    Type: Application
    Filed: February 26, 2020
    Publication date: October 1, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shinji YAMAMOTO, Ryohei KOMIYAMA, Koichi SATOH, Hitoshi TSUKIDATE, Michio MIURA
  • Publication number: 20200313204
    Abstract: An electrochemical device has an electrochemical cell provided with an electrolyte having proton conductivity, an anode provided on one side of the electrolyte, and a cathode provided on the other side of the electrolyte. The electrochemical device is configured so that a solution containing water, an artificial synthetic resin, and an acid is supplied to the anode. The electrochemical device is configured so that an oxygen-containing gas is supplied to the cathode and connecting a load between the anode and the cathode. The electrochemical device is configured so that the inert gas is supplied to the cathode and connecting the voltage application unit between the anode and the cathode.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Shinya Teranishi, Mai Fukui, Ryohei Yamamoto, Tetsuya Hori, Ikuna Nishikawa, Hiroo Imamura, Takashi Hibino, Masahiro Nagao
  • Publication number: 20200309600
    Abstract: An imaging condition evaluation device according to the present disclosure includes: a spectrometer configured to capture a spectral image under an arbitrarily set imaging condition; and an evaluation unit configured to set a first region and a second region different from each other in the spectral image, and calculate an evaluation value of the imaging condition based on an optical spectrum of the first region and an optical spectrum of the second region.
    Type: Application
    Filed: March 31, 2020
    Publication date: October 1, 2020
    Inventors: Yuki YAMAMOTO, Ryohei KURI
  • Publication number: 20200299626
    Abstract: To provide a cell culture container capable of preparing spheroids having a uniform size highly efficiently, and capable of microscopic observation simply, particularly fluorescence microscopic observation. A cell culture container comprising: side walls forming an opening, a bottom comprising a light-transmitting glass material, closing the lower end of the opening and having a plurality of recesses in a region which the opening faces on its upper surface, and a surface layer inhibiting cell adhesion formed on the inner surface of the recesses.
    Type: Application
    Filed: June 8, 2020
    Publication date: September 24, 2020
    Applicant: AGC Inc.
    Inventors: Ryohei KOGUCHI, Hajime EGUCHI, Lijun ZHU, Kyoko YAMAMOTO
  • Publication number: 20200287125
    Abstract: A piezoelectric speaker (10) includes a piezoelectric film (35), a first joining layer (51), and an interposed layer (40). The piezoelectric film (35) includes a first electrode (61), a second electrode (62), and a piezoelectric body (30) sandwiched by the first electrode (61) and the second electrode (62). The first joining layer (51) is a layer having pressure-sensitive adhesiveness or adhesiveness. The interposed layer (40) is disposed between the piezoelectric film (35) and the first joining layer (51). Both principal surfaces of the piezoelectric film (35) vibrate up and down as a whole.
    Type: Application
    Filed: November 20, 2018
    Publication date: September 10, 2020
    Inventors: Yusuke KOMOTO, Kohei OTO, Saori YAMAMOTO, Ryohei OBAN, Tomoaki HISHIKI
  • Patent number: 10768380
    Abstract: A ferrule that holds an end part of an optical fiber includes a fiber hole into which the optical fiber is inserted and an upper wall part and a lower wall part that define a hollow adhesive filling part, where the lower wall part faces the upper wall part. The adhesive filling part is filled with an adhesive applied between the optical fiber inserted in the fiber hole and an inner wall surface of the adhesive filling part. The upper wall part has an upper opening through which the adhesive passes into the adhesive filling part, and the lower wall part has a lower opening that ventilates the adhesive filling part to outside of the ferrule.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: September 8, 2020
    Assignee: Fujikura Ltd.
    Inventors: Akihiro Nakama, Shigeo Takahashi, Hirotaka Asada, Kazuaki Toba, Masanari Yamamoto, Ryohei Takahashi
  • Patent number: 10755946
    Abstract: A method for producing a wafer from a hexagonal single crystal ingot includes: planarizing an upper surface of the hexagonal single crystal ingot; applying a laser beam of such a wavelength as to be transmitted through the ingot, with a focal point positioned in an inside of a region not to be formed with devices of a wafer to be produced from the upper surface of the ingot which has been planarized, to form a production history; and applying a laser beam of such a wavelength as to be transmitted through the hexagonal single crystal ingot with a focal point of the laser beam positioned at a depth corresponding to a thickness of the wafer to be produced from the upper surface of the hexagonal single crystal ingot which has been planarized, to form an exfoliation layer.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: August 25, 2020
    Assignee: DISCO CORPORATION
    Inventors: Kazuya Hirata, Ryohei Yamamoto
  • Patent number: 10733398
    Abstract: A detection device includes a switch unit, the switch unit performs switching to a gain reduction state in which a gain of a loop antenna is reduced or a gain non-reduction state in which the gain of the loop antenna is not reduced in correspondence with a state of a detection target. When a wavelength of an electric wave is set as ?, the switch unit includes switch terminals for reducing the gain of the loop antenna within a range K1 on the loop antenna from a first circuit terminal to a position that is spaced away from the first circuit terminal by ?/8. In addition, the switch unit includes switch terminals for reducing the gain of the loop antenna within a range on the loop antenna from a second circuit terminal to a position that is spaced away from the second circuit terminal by ?/8.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: August 4, 2020
    Assignee: YAZAKI CORPORATION
    Inventors: Kouichi Yamamoto, Kazutomo Fujinami, Hiroshi Miyamoto, Ryohei Nishizaki, You Yanagida, Kunihiko Yamada
  • Publication number: 20200232578
    Abstract: In an opening and closing valve of the invention, an operation dial 6 and a valve body housed in a main body 2 are connected by a rotary shaft 3, and a regulation member 4 having a first fitting hole 422 engaging with a fitter 33 in the rotary shaft 3 is disposed in a housing space 25 of the main body 2. When a second fitting hole 621 in the operation dial 6 is released from the fitter 33 in the closed state, the first fitting hole 422 is fitted into the fitter 33 to regulate the rotation, or when the second fitting hole 621 is fitted into the fitter 33, the first fitting hole 422 is released from the fitter 33 to achieve the rotation.
    Type: Application
    Filed: January 17, 2020
    Publication date: July 23, 2020
    Inventors: Ryohei YAMAMOTO, Yuho YAMAMOTO, Naoyuki YAMAMOTO
  • Patent number: D902353
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: November 17, 2020
    Inventors: Ryohei Yamamoto, Yuho Yamamoto, Naoyuki Yamamoto
  • Patent number: D902354
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: November 17, 2020
    Inventors: Ryohei Yamamoto, Yuho Yamamoto, Naoyuki Yamamoto