Patents by Inventor Takashi Sakamoto

Takashi Sakamoto 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: 20250050549
    Abstract: A mold includes a guide pin configured to guide mold closing. The guide pin is housed in a guide pin housing hole formed in a parting line and is configured to be driven by a predetermined drive mechanism. The guide pin is configured to protrude its tip end from the parting line and to retract into the guide pin housing hole by the drive mechanism.
    Type: Application
    Filed: August 7, 2024
    Publication date: February 13, 2025
    Inventors: Kiyotaka NAKAYAMA, Akihiro NAITO, Takashi UEMURA, Koji MATSUZAKI, Ryuki SAKAMOTO, Shoso NISHIDA
  • Publication number: 20250050454
    Abstract: A laser processing method includes: a step of forming a first groove in an object along a line by irradiating the object with laser light; a step of forming a second groove in the object along the line by irradiating the object with laser light, the second groove overlapping an end portion of the first groove in the width direction of the first groove; and a step of forming a modified region inside the object along the line by irradiating the object with laser light and extending a crack from the modified region after forming a composite groove including the first groove and the second groove in the object.
    Type: Application
    Filed: August 22, 2022
    Publication date: February 13, 2025
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takeshi SAKAMOTO, Yo SUGIMOTO, Takafumi OGIWARA, Takashi KURITA, Ryo YOSHIMURA
  • Patent number: 12215968
    Abstract: An angle measurement device according to the present invention relates to an angle measurement device for measuring an incident angle of an incident light ray, and includes: at least one light deflector; a driving power supply; a light receiver; and a calculation unit. The light deflector is of a transmission type, has an electro-optic effect, and is configured to change an optical path of the light ray by a voltage applied from the driving power supply, and cause the light ray to enter the light receiver. The calculation unit is configured to calculate the incident angle based on the voltage at which an intensity of the light ray detected by the light receiver is maximum.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: February 4, 2025
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Sohan Kawamura, Takashi Sakamoto, Masahiro Ueno, Yuichi Akage, Soichi Oka
  • Patent number: 12210264
    Abstract: An optical deflection apparatus is provided with an optical deflection element and a compensating optical element. The optical deflection element deflects incident light in a first direction (a voltage application direction) in which a voltage is applied (one-dimensional scan). The compensating optical element is an element which has an incidence surface and an emission surface, which compensates for a deflection deviation in a second direction that is perpendicular to the first direction and to an optical axis of the incident light of deflected light having been deflected by the optical deflection element and incident from the incidence surface, and which arranges a direction of travel of compensated light to be emitted from the emission surface on a same plane.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: January 28, 2025
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takashi Sakamoto, Yuichi Akage, Sohan Kawamura, Masahiro Ueno, Soichi Oka
  • Publication number: 20250025963
    Abstract: A laser processing device includes a support unit, a laser light source, a spatial light modulator, and a condensing unit. A modulation pattern displayed on a display unit of the spatial light modulator includes a branching pattern for branching laser light into first branched laser light components to form a first groove and second branched laser light components to form a second groove. A distance between the position of the focusing point of the first branched laser light and the position of the focusing point of the second branched laser light adjacent to each other in a direction along the line is larger than a distance between the position of the focusing point of the first branched laser light and the position of the focusing point of the second branched laser light in the width direction of the first groove and the second groove.
    Type: Application
    Filed: August 22, 2022
    Publication date: January 23, 2025
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takeshi SAKAMOTO, Yo SUGIMOTO, Takafumi OGIWARA, Takashi KURITA, Ryo YOSHIMURA
  • Patent number: 12188090
    Abstract: Disclosed is a method for determining the sex of yellowtails, the method comprising a step of identifying whether an amino acid residue at position 143 in polypeptide encoded by the HSD17B1 gene of yellowtails is a glutamic acid residue or a glycine residue; a nucleic acid molecule or a primer set which is for use in said method; or a kit comprising the same, for determining the sex of yellowtails. The method according to the present invention is useful in that the genetic sex of yellowtails can be accurately determined.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: January 7, 2025
    Assignee: National University Corporation Tokyo University of Marine Science and Technology
    Inventors: Takashi Sakamoto, Masatoshi Nakamoto, Kiyoshi Kikuchi, Takashi Koyama
  • Publication number: 20250004400
    Abstract: A developing device includes: a developer transport unit that transports a developer containing a toner and a carrier; and a developer discharge unit provided at an end portion on a downstream side along a transport direction of the developer transport unit and including a reverse transport blade that is disposed inside a reversing passage from which a part of the developer is discharged, and rotates around a rotation shaft to transport the developer in a direction opposite to a discharge direction, the developer discharge unit including a magnetic attraction unit magnetically attracting the developer in at least one of the reverse transport blade or the reversing passage.
    Type: Application
    Filed: December 7, 2023
    Publication date: January 2, 2025
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kiyoshi Sako, Takashi Sakamoto, Takuya Iwamura, Taichiro Okuno, Masayuki Shimoda, Kento Terashima, Kenji Hayamizu
  • Publication number: 20240410350
    Abstract: A micro-diaphragm pump includes a main body, a pump chamber, a diaphragm, a first electrode and a second electrode. The diaphragm is constituted of a crystal material having an electrostrictive effect. The diaphragm can be constituted of a transparent crystal material having an electrostrictive effect. The diaphragm can be constituted of either a cubic KTN [KTa1-?Nb?O3 (0<?<1)] crystal or a lithium-added cubic KLTN [K1-?Li?Ta1-?Nb?O3 (0<?<1, 0<?<1)] crystal.
    Type: Application
    Filed: December 6, 2021
    Publication date: December 12, 2024
    Inventors: Yurina Tanaka, Takashi Sakamoto, Masahiro Ueno, Sohan Kawamura, Yuichi Akage, Masayuki Tsuda
  • Patent number: 12159605
    Abstract: An unevenness correction data generation device suppressing the appearance of color unevenness when turning on R, G and B together includes a pattern generation unit causing red, green and blue images, in which display panel subpixels are turned on at the same gray level, to be displayed, a monochrome camera, a control unit generating first red, green and blue luminance correction data based on shooting data of the monochrome camera, a pattern generation unit causing the display panel to display a white image by causing red, green and blue images corrected with the respective luminance correction data to be displayed simultaneously, a color camera shooting the white image in color, and a control unit generating color correction data for correcting color unevenness based on shooting data of the color camera and generates unevenness correction data based on the red, green and blue luminance correction data and the color correction data.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: December 3, 2024
    Assignee: IIX INC.
    Inventors: Makoto Hatakenaka, Takashi Sakamoto, Hiroshi Murase, Mitsuo Hagiwara, Hideaki Suzuki, Kazunori Yoshizawa
  • Patent number: 12148402
    Abstract: A panel drive circuit having an input interface to which an image signal is input, a gamma correction circuit that corrects an image processing signal generated by an image processing circuit performing image processing on the image signal input to the input interface, such that a gamma correction signal thus generated has predetermined gamma characteristics, an unevenness correction circuit that corrects the gamma correction signal generated through the correction by the gamma correction circuit, based on correction data for reducing unevenness of a display panel, and an D/A convertor that has a variable output voltage range, and performs D/A conversion on an unevenness correction signal generated through the correction by the unevenness correction circuit and outputs the signal thus generated to the display panel, and the unevenness correction circuit changes the correction method according to the output voltage range of the D/A convertor.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: November 19, 2024
    Assignee: IIX INC.
    Inventors: Makoto Hatakenaka, Takashi Sakamoto, Mitsuo Hagiwara, Norimasa Senda, Yoshihide Minegishi, Hiroshi Murase
  • Publication number: 20240319419
    Abstract: A wavelength-tunable optical filter includes a plate-like first component, a plate-like second component, a first reflective film, and a second reflective film. The wavelength-tunable optical filter also includes a first transparent electrode and a second transparent electrode that serve as a voltage applying part that applies a voltage in the thickness direction of the first component, and as a charge injecting part that injects electric charge into the first component. The first transparent electrode is formed on a first incident surface, and is ohmically connected to the first component. The second transparent electrode is formed between a first emission surface and the first reflective film, and is ohmically connected to the first component.
    Type: Application
    Filed: January 13, 2021
    Publication date: September 26, 2024
    Inventors: Yurina Tanaka, Takashi Sakamoto, Yuichi Akage, Soichi Oka
  • Patent number: 12092805
    Abstract: A laser light scanning apparatus includes: an optical system that generates parallel light from laser light emitted from a light source; an optical deflector that performs one-dimensional deflection on the parallel light from the optical system; and a diffractive optical element that diffracts deflected light from the optical deflector. The diffractive optical element is configured such that the diffracted light is focused along a predetermined axis that extends from the optical deflector toward the diffractive optical element, and the position at which the diffracted light is focused on the predetermined axis changes according to the incidence position of the deflected light.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: September 17, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Sohan Kawamura, Yuichi Akage, Takashi Sakamoto, Soichi Oka
  • Publication number: 20240301472
    Abstract: A compound suitable for nucleic acid detection or viscosity measurement is provided. A compound of the disclosure includes a donor and three acceptors bound to the donor so as to perform rotary motion with respect to the donor. A fluorescence property of the compound changes in accordance with change in the rotary motion of each acceptor.
    Type: Application
    Filed: November 30, 2021
    Publication date: September 12, 2024
    Applicant: WAKAYAMA UNIVERSITY
    Inventor: Takashi SAKAMOTO
  • Patent number: 12085832
    Abstract: In an embodiment, an optical deflection device includes: an electro-optic crystal comprising KTa1-xNbxO3, the electro-optic crystal having a first surface and a second surface, the first surface and the second surface facing each other; a first electrode on the first surface of the electro-optic crystal; a second electrode on the second surface of the electro-optic crystal; a power source configured to output a control voltage for forming an electric field inside the electro-optic crystal via the first electrode and the second electrode; and a light source configured to emit a pulse laser to be incident on the electro-optic crystal along an optical axis, the optical axis substantially perpendicular to a direction of the electric field formed by the control voltage, wherein a peak power density of the pulse laser output from the light source at a light incidence surface of the electro-optic crystal is less than 800000 W/cm2.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: September 10, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuichi Akage, Takashi Sakamoto, Soichi Oka, Sohan Kawamura, Masahiro Ueno
  • Patent number: 12072602
    Abstract: The present invention includes an optical deflector that changes a deflection angle depending on an applied voltage, a voltage control unit that applies a voltage to the optical deflector, and a storage unit that stores a value of a voltage to be output by the voltage control unit. The voltage control unit outputs a voltage of a value stored in the storage unit to the optical deflector. The storage unit stores a goal voltage V=ggoal(t), which provides a deflection angle ? with the goal time dependency ?=?goal(t).
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: August 27, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takashi Sakamoto, Yuichi Akage, Tadayuki Imai, Masahiro Ueno, Sohan Kawamura, Soichi Oka
  • Patent number: 12072604
    Abstract: The present invention includes an optical deflector that changes a deflection angle depending on an applied voltage, a voltage control unit that applies a voltage to the optical deflector, and a storage unit that stores a value of a voltage to be output by the voltage control unit. The voltage control unit outputs a voltage of a value stored in the storage unit to the optical deflector. The storage unit stores a goal voltage V=ggoal(t), which provides a deflection angle ? with the goal time dependency ?=?goal(t).
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: August 27, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takashi Sakamoto, Yuichi Akage, Tadayuki Imai, Masahiro Ueno, Sohan Kawamura, Soichi Oka
  • Publication number: 20240280843
    Abstract: A temperature regulating unit is attached to a first incident surface of a first component through a first transparent electrode. The temperature regulating unit is composed of a Peltier element. The temperature regulating unit includes an opening through which the target light can pass. The temperature regulating unit has, for example, a rectangular parallelepiped outer shape in which a surface perpendicular to an optical axis is square-shaped. The opening is formed to penetrate through the temperature regulating unit in a direction perpendicular to the optical axis and has a circular shape in a plan view.
    Type: Application
    Filed: June 12, 2020
    Publication date: August 22, 2024
    Inventors: Yurina Tanaka, Yuichi Akage, Takashi Sakamoto, Soichi Oka
  • Publication number: 20240263340
    Abstract: An embodiment crystal growing apparatus is an apparatus that grows a crystal of a raw material by heating and melting, with a heating mechanism, one end side of a raw material body formed with a solid raw material with which a seed crystal is in contact, and further includes a laser mechanism. In crystal growth using this crystal growing apparatus, the portion to be heated for forming a melt is moved in the direction toward the other end side of the raw material body, and the melt is irradiated and heated with laser light emitted from the laser mechanism while the melt is moved from the one end side to the other end side.
    Type: Application
    Filed: May 24, 2021
    Publication date: August 8, 2024
    Inventors: Sohan Kawamura, Eiko Sato, Takashi Sakamoto, Soichi Oka
  • Publication number: 20240233669
    Abstract: A panel drive circuit having an input interface to which an image signal is input, a gamma correction circuit that corrects an image processing signal generated by an image processing circuit performing image processing on the image signal input to the input interface, such that a gamma correction signal thus generated has predetermined gamma characteristics, an unevenness correction circuit that corrects the gamma correction signal generated through the correction by the gamma correction circuit, based on correction data for reducing unevenness of a display panel, and an D/A convertor that has a variable output voltage range, and performs D/A conversion on an unevenness correction signal generated through the correction by the unevenness correction circuit and outputs the signal thus generated to the display panel, and the unevenness correction circuit changes the correction method according to the output voltage range of the D/A convertor.
    Type: Application
    Filed: March 10, 2021
    Publication date: July 11, 2024
    Applicant: IIX INC.
    Inventors: Makoto HATAKENAKA, Takashi SAKAMOTO, Mitsuo HAGIWARA, Norimasa SENDA, Yoshihide MINEGISHI, Hiroshi MURASE
  • Publication number: 20240184129
    Abstract: An image display device includes: an imaging element; a light source configured to irradiate light toward the imaging element; a light-shielding member configured to shield a portion of light of at least the light source; and a light-transmitting member configured to transmit light emitted from the imaging element, the light-transmitting member selectively controlling a transmission of light of at least some wavelengths of the light emitted from the imaging element.
    Type: Application
    Filed: December 1, 2023
    Publication date: June 6, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Hajime AKIMOTO, Takashi SAKAMOTO, Masae YAMAWAKI