Patents by Inventor Taku Yamada

Taku Yamada 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: 20230343541
    Abstract: A photoelectric-surface electron source includes: a glass substrate that receives laser light from a substrate light-receiving surface including microlenses and that focuses the laser light toward a substrate main surface located on the opposite side from the substrate light-receiving surface; a photoelectric surface that is provided to the substrate main surface, and that receives the focused laser light and emits photoelectrons; and an extraction electrode that is fixed to the substrate main surface and that extracts the photoelectrons from the photoelectric surface. The extraction electrode is disposed away from the photoelectric surface along the normal direction of the substrate main surface and has: an electrode part in which electrode holes for allowing the photoelectrons to pass therethrough are provided; and a frame part that is fixed to a region surrounding the photoelectric surface in the substrate main surface.
    Type: Application
    Filed: June 9, 2021
    Publication date: October 26, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Tomohiko HIRANO, Hiroyuki TAKETOMI, Motohiro SUYAMA, Wataru MATSUDAIRA, Akihiro KAGEYAMA, Kota IWASAKI, Taku YAMADA
  • Publication number: 20230331651
    Abstract: To provide a method for producing a fluorovinyl ether compound, whereby it is possible to suppress the generation of byproducts. The method for producing a fluorovinyl ether compound of the present invention is a method for producing a fluorovinyl ether compound, which comprises heat-treating a compound having a group represented by the formula (1): F—C(?O)—CF(X)—(CF2)n—O— in the presence of an oxide containing at least one element selected from the group consisting of alkali metal elements and alkaline earth metal elements, to obtain a fluorovinyl ether compound having a group represented by the formula (2): CF2?CF—O—, wherein the specific surface area of the oxide before the heat treatment is at least 1.0 m2/g. In the formula (1), n is 0 or 1, wherein when n is 0, X is CF3 and when n is 1, X is F.
    Type: Application
    Filed: June 22, 2023
    Publication date: October 19, 2023
    Applicant: AGC INC.
    Inventors: Taku YAMADA, Toshifumi NIHEI
  • Publication number: 20230302431
    Abstract: The present invention relates to an adsorbent including: an inorganic porous body; and an amine compound, in the inorganic porous body has an oil absorption value of 230 ml/100 g or more, and a peak diameter of a pore size, which is obtained based on a nitrogen adsorption method, of 20 nm or more and 100 nm or less. The present invention relates to an adsorbent including: an inorganic porous body; and an amine compound, in which the inorganic porous body has a pore volume of 1.2 cm3/g or more and 3.5 cm3/g or less, and a peak diameter of a pore size, which is obtained based on a nitrogen adsorption method, of 20 nm or more and 100 nm or less.
    Type: Application
    Filed: May 12, 2023
    Publication date: September 28, 2023
    Applicants: AGC Inc., AGC SI-TECH CO., LTD.
    Inventors: Eisuke MUROTANI, Ryohei KOGUCHI, Taku YAMADA, Katsumasa NAKAHARA, Hajime KATAYAMA, Masaki INOUE
  • Publication number: 20230290605
    Abstract: A photoelectric surface electron source includes a glass substrate configured to receive laser light incident from a substrate back surface to emit the laser light from a substrate main surface, a photoelectric surface provided on the substrate main surface and configured to receive the laser light and emit a photoelectron, a lens array disposed on the substrate back surface and including a plurality of microlenses for condensing the laser light toward the photoelectric surface, and a light shielding portion provided on the glass substrate. The light shielding portion has a back surface-side light shielding layer provided on a back surface-side light shielding surface interposed between the plurality of microlenses on the substrate back surface, and a main surface-side light shielding layer provided on a main surface-side light shielding surface.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 14, 2023
    Applicants: HAMAMATSU PHOTONICS K.K., NuFlare Technology, Inc.
    Inventors: Tomohiko HIRANO, Hiroyuki TAKETOMI, Motohiro SUYAMA, Wataru MATSUDAIRA, Akihiro KAGEYAMA, Kota IWASAKI, Taku YAMADA
  • Patent number: 11664191
    Abstract: According to one aspect of the present invention, an electron beam irradiation apparatus includes a photoelectric surface configured to receive irradiation of excitation light on a side of a front surface, and generate electron beams from a side of a back surface; a blanking aperture array mechanism provided with passage holes corresponding to the electron beams and configured to perform deflection control on each of the plurality of electron beams passing through the passage holes; and an adjustment mechanism configured to adjust at least one of an orbit of transmitted light that passes through at least one of arrangement objects including the photoelectric surface, the blanking aperture array mechanism, and the limit aperture substrate up to the stage and reaches the stage, among an irradiated excitation light, and an orbit of the electron beams, wherein the arrangement objects shield at least a part of the transmitted light.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: May 30, 2023
    Assignee: NuFlare Technology, Inc.
    Inventors: Taku Yamada, Kota Iwasaki
  • Patent number: 11621140
    Abstract: A multiple electron beam writing apparatus includes an excitation light source to emit an excitation light, a multi-lens array to divide the excitation light into a plurality of lights, a photoemissive surface to receive the plurality of lights incident through its upper side, and emit multiple photoelectron beams from its back side, a blanking aperture array mechanism to provide, by deflecting each beam of the multiple photoelectron beams, an individual blanking control which individually switches each beam between ON and OFF, an electron optical system to include an electron lens, and to irradiate, using the electron lens, a target object with the multiple photoelectron beams having been controlled to be beam ON, and a control circuit to interconnect, for each shot of the multiple photoelectron beams, a timing of switching the excitation light between emission and non-emission with a timing of switching the each beam between ON and OFF.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: April 4, 2023
    Assignee: NuFlare Technology, Inc.
    Inventors: Kota Iwasaki, Taku Yamada
  • Publication number: 20230078311
    Abstract: In one embodiment, a multi-charged-particle-beam writing method includes dividing a data path into a plurality of first blocks based on at least either one of each of a plurality of input/output circuits and a plurality of wiring groups, and calculating a first shift amount for multiple beams for each of the plurality of first blocks. The data path is for inputting control data to a cell array on a blanking aperture array substrate. The control data is for controlling ON/OFF of each beam of the multiple beams. Each of the plurality of wiring groups includes a plurality of pieces of wiring connected to the plurality of input/output circuits and grouped together based on inter-wiring distance. The first shift amount is due to at least one of an electric field and a magnetic field for each of the plurality of first blocks. An irradiation position or a dose of the multiple beams is corrected based on the first shift amount, and irradiation is performed.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 16, 2023
    Applicant: NuFlare Technology, Inc.
    Inventors: Taku YAMADA, Takahito NAKAYAMA
  • Patent number: 11562878
    Abstract: A method for controlling operation of an electron emission source includes acquiring, while varying an emission current of an electron beam, a characteristic between a surface current of a target object at a position on the surface of the target object irradiated with the electron beam, and the emission current, calculating, based on the characteristic, first gradient values each obtained by dividing the surface current of the target object by the emission current, in a predetermined range of the emission current in the characteristic, calculating a second gradient value by dividing a surface current of the target object by an emission current in a state where the electron beam has been adjusted, and adjusting a cathode temperature to make the second gradient value in the state where the electron beam has been adjusted be in the range of the first gradient values in the predetermined range of the emission current.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: January 24, 2023
    Assignee: NuFlare Technology, Inc.
    Inventors: Nobuo Miyamoto, Taku Yamada
  • Publication number: 20220367143
    Abstract: A difference between a calculated amount of drift and an actual amount of drift is reduced.
    Type: Application
    Filed: July 12, 2022
    Publication date: November 17, 2022
    Applicant: NuFlare Technology, Inc.
    Inventor: Taku YAMADA
  • Publication number: 20220267236
    Abstract: A method of producing a hydrofluoroolefin includes reacting a chlorofluoroolefin that is represented by Formula (I) or Formula (II) and that has 8 or less carbon atoms with a hydrogen molecule, in the presence of an intermetallic compound containing at least one first metal that is selected from the group consisting of palladium, platinum, rhodium, copper and iridium, and containing a second metal that is different from the first metal, to obtain a hydrofluoroolefin in which a hydrogen atom is substituted for at least a chlorine atom represented by Cl among chlorine atoms contained in Formula (I) or Formula (II).
    Type: Application
    Filed: March 1, 2022
    Publication date: August 25, 2022
    Applicant: AGC Inc.
    Inventors: Takayuki KOMATSU, Tomoaki TAKAYAMA, Satoshi ARIYAMA, Taku YAMADA
  • Publication number: 20220189734
    Abstract: According to one aspect of the present invention, an electron beam irradiation apparatus includes a photoelectric surface configured to receive irradiation of excitation light on a side of a front surface, and generate electron beams from a side of a back surface; a blanking aperture array mechanism provided with passage holes corresponding to the electron beams and configured to perform deflection control on each of the plurality of electron beams passing through the passage holes; and an adjustment mechanism configured to adjust at least one of an orbit of transmitted light that passes through at least one of arrangement objects including the photoelectric surface, the blanking aperture array mechanism, and the limit aperture substrate up to the stage and reaches the stage, among an irradiated excitation light, and an orbit of the electron beams, wherein the arrangement objects shield at least a part of the transmitted light.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 16, 2022
    Applicant: NuFlare Technology, Inc.
    Inventors: Taku YAMADA, Kota IWASAKI
  • Publication number: 20220157553
    Abstract: A method for controlling operation of an electron emission source includes acquiring, while varying an emission current of an electron beam, a characteristic between a surface current of a target object at a position on the surface of the target object irradiated with the electron beam, and the emission current, calculating, based on the characteristic, first gradient values each obtained by dividing the surface current of the target object by the emission current, in a predetermined range of the emission current in the characteristic, calculating a second gradient value by dividing a surface current of the target object by an emission current in a state where the electron beam has been adjusted, and adjusting a cathode temperature to make the second gradient value in the state where the electron beam has been adjusted be in the range of the first gradient values in the predetermined range of the emission current.
    Type: Application
    Filed: October 19, 2021
    Publication date: May 19, 2022
    Applicant: NuFlare Technology, Inc.
    Inventors: Nobuo MIYAMOTO, Taku YAMADA
  • Publication number: 20220059310
    Abstract: A multiple electron beam writing apparatus includes an excitation light source to emit an excitation light, a multi-lens array to divide the excitation light into a plurality of lights, a photoemissive surface to receive the plurality of lights incident through its upper side, and emit multiple photoelectron beams from its back side, a blanking aperture array mechanism to provide, by deflecting each beam of the multiple photoelectron beams, an individual blanking control which individually switches each beam between ON and OFF, an electron optical system to include an electron lens, and to irradiate, using the electron lens, a target object with the multiple photoelectron beams having been controlled to be beam ON, and a control circuit to interconnect, for each shot of the multiple photoelectron beams, a timing of switching the excitation light between emission and non-emission with a timing of switching the each beam between ON and OFF.
    Type: Application
    Filed: July 12, 2021
    Publication date: February 24, 2022
    Applicant: NuFlare Technology, Inc.
    Inventors: Kota IWASAKI, Taku YAMADA
  • Patent number: 11251012
    Abstract: Drift correction is performed with high accuracy while reducing the calculation amount.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: February 15, 2022
    Assignee: NuFlare Technology, Inc.
    Inventor: Taku Yamada
  • Publication number: 20210305008
    Abstract: Drift correction is performed with high accuracy while reducing the calculation amount.
    Type: Application
    Filed: July 4, 2019
    Publication date: September 30, 2021
    Applicant: NuFlare Technology, Inc.
    Inventor: Taku YAMADA
  • Publication number: 20210103086
    Abstract: A planar illumination device according to an embodiment includes a light source and a light guide plate. The light source emits light in a predetermined direction. The light guide plate includes a side surface, an emission surface as one of principal surfaces, and a back surface as the other principal surface, the back surface including a prism formed thereon, the prism emitting, through an emission surface, light emitted from the light source and entered from the side surface. The prism includes, at a section parallel to the predetermined direction, a first region substantially parallel to the emission surface and a second region tilted relative to the emission surface, the first region and the second region extending in a direction oblique to the predetermined direction.
    Type: Application
    Filed: March 13, 2018
    Publication date: April 8, 2021
    Inventors: Taku YAMADA, Kenta OISHI
  • Patent number: 10788613
    Abstract: A planar lighting device according to an embodiment includes a light guide plate and a reflecting member. The light guide plate has an incident surface that receives light output from a light source and an output surface that outputs the light received by the incident surface. The reflecting member faces an end surface opposite to the incident surface of the light guide plate and reflects light leaking from the end surface. A plurality of first prisms are formed on an opposite surface opposite to the output surface-of the light guide plate to be away from the output surface stepwise from the incident surface to the end surface.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: September 29, 2020
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Taku Yamada, Koji Sakai, Kenta Oishi
  • Patent number: 10703696
    Abstract: The method for isomerizing an organic compound comprises a step of selecting an alumina so that the acid amount calculated from the amount of ammonia desorbed at a desorption temperature of at least 300° C. by temperature-programmed desorption of ammonia is at least 0.10 mmol/g and at most 0.25 mmol/g; a step of fluorinating the selected alumina by a fluorinating agent to produce a partially fluorinated alumina; and a step of isomerizing, by using the obtained partially fluorinated alumina, an organic compound having at least two carbon atoms wherein to at least one of the adjacent carbon atoms, at least one fluorine atom is bonded and to the other, at least one chlorine atom or hydrogen atom is bonded.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: July 7, 2020
    Assignee: AGC Inc.
    Inventors: Taku Yamada, Yusuke Suzuki, Mitsugu Kasagawa
  • Patent number: 10556684
    Abstract: A light-weight and low-power integrated system module suitable for installation at a passenger seat disposed aboard a passenger vehicle and methods for manufacturing and using same. By integrating selected interface system components with the associated interconnections, the integrated system module provides an intuitive user interface system for interacting with a passenger entertainment system. The integrated system module can be installed within a seatback of the passenger seat that compliments the look and feel of the user interface system, creating an immersive entertainment experience during travel.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: February 11, 2020
    Assignee: Panasonic Avionics Corporation
    Inventors: Paul Anthony Margis, Mehdi Izadyar, Marshal H. Perlman, Kaname Tomita, Yasuhiro Araki, Taku Yamada, Omar Lopez, Craig Allan Depner, Sheng Tong
  • Patent number: D904328
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: December 8, 2020
    Assignee: PANASONIC AVIONICS CORPORATION
    Inventors: Paul Anthony Margis, Mehdi Izadyar, Marshal H. Perlman, Kaname Tomita, Yasuhiro Araki, Taku Yamada, Omar Lopez, Craig Allan Depner, Sheng Tong