Patents by Inventor Yasuo Kato

Yasuo Kato 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: 9934935
    Abstract: A multi charged particle beam writing apparatus includes a maximum irradiation time acquisition processing circuitry to acquire, for each shot of multi-beams, a maximum irradiation time of irradiation time of each of the multi-beams, a unit region writing time calculation processing circuitry to calculate, using the maximum irradiation time for each shot, a unit region writing time by totalizing the maximum irradiation time of each shot of a plurality of times of shots of the multi-beams which irradiate a unit region concerned during stage moving, for each unit region of a plurality of unit regions obtained by dividing a writing region of a target object, a stage speed calculation processing circuitry to calculate speed of the stage for each unit region so that the stage speed becomes variable, by using the unit region writing time and a stage control processing circuitry to variably control the stage speed.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: April 3, 2018
    Assignee: NuFlare Technology, Inc.
    Inventors: Ryoichi Yoshikawa, Hideo Inoue, Hayato Kimura, Yasuo Kato, Jun Yashima
  • Publication number: 20180086069
    Abstract: An actuator device includes: an actuator including piezoelectric elements arranged in a first direction and first contacts arranged in the first direction; a protector including a first wall opposed to the piezoelectric elements and a second wall coupled to the first wall and joined to a region of the actuator at which the first contacts are disposed; first connection terminals disposed on the first; and first through electrodes formed in the second wall to bring the first contacts and the first connection terminals into conduction with each other. A distance between two of the first through electrodes which respectively correspond to two of the piezoelectric elements which are adjacent to each other in the first direction is greater than a distance in the first direction between the two of the piezoelectric elements which are adjacent to each other in the first direction.
    Type: Application
    Filed: March 28, 2017
    Publication date: March 29, 2018
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Toru KAKIUCHI, Yasuo KATO, Rui WANG, Yuichi ITO
  • Publication number: 20180090866
    Abstract: An actuator device includes: an actuator including first contacts arranged in a first direction; and a wire member including second contacts and joined to the actuator. The second contacts are arranged in the first direction and respectively connected to the first contacts. Each of particular contacts as the first contacts or the second contacts has a protruding and recessed portion including: at least two protrusions; and a recess between the at least two protrusions. The particular contacts include: at least one central-region contact disposed on a central region in the first direction; and at least one end-region contact disposed nearer to an end region than to the central region in the first direction. The protruding and recessed portion of each of the at least one central-region contact is different in shape from the protruding and recessed portion of each of the at least one end-region contact.
    Type: Application
    Filed: March 28, 2017
    Publication date: March 29, 2018
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Toru KAKIUCHI, Yasuo KATO, Rui WANG, Yuichi ITO
  • Publication number: 20180061614
    Abstract: A charged particle beam writing apparatus includes an area density calculation unit to calculate a pattern area density weighted using a dose modulation value, which has previously been input from an outside and in which an amount of correction of a dimension variation due to a proximity effect has been included, a fogging correction dose coefficient calculation unit to calculate a fogging correction dose coefficient for correcting a dimension variation due to a fogging effect by using the pattern area density weighted using the dose modulation value having been input from the outside, a dose calculation unit to calculates a dose of a charged particle beam by using the fogging correction dose coefficient and the dose modulation value, and a writing unit to write a pattern on a target object with the charged particle beam of the dose.
    Type: Application
    Filed: October 24, 2017
    Publication date: March 1, 2018
    Applicant: NuFlare Technology, Inc.
    Inventors: Yasuo KATO, Hiroshi Matsumoto
  • Patent number: 9899187
    Abstract: A charged particle beam writing apparatus includes a processing circuitry configured to calculate a third proximity effect correction irradiation coefficient where at least one correction irradiation coefficient term up to k-th order term, in correction irradiation coefficient terms of from a first order term to a n-th order term for a first proximity effect correction irradiation coefficient which does not take account of a predetermined effect, are replaced by at least one correction irradiation coefficient term up to the k-th order term, for a second proximity effect correction irradiation coefficient which takes account of the predetermined effect; and a processing circuitry configured to calculate a dose by using the third proximity effect correction irradiation coefficient.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: February 20, 2018
    Assignee: NuFlare Technology, Inc.
    Inventors: Yasuo Kato, Masafumi Ise, Ryoh Kawana
  • Patent number: 9884483
    Abstract: A liquid jetting apparatus comprises a flow passage member which has a pressure chamber communicated with a nozzle and a liquid supply port communicated with the pressure chamber; a piezoelectric element with which the flow passage member is provided so that the piezoelectric element is overlapped with the pressure chamber; a protective member which is arranged on the flow passage member so that the piezoelectric element is covered therewith; and a supply member which is formed with a supply flow passage communicated with the liquid supply port of the flow passage member and which is adhered to extend over the flow passage member and the protective member; wherein a layer of a first adhesive to adhere the protective member and the supply member is thicker than a layer of a second adhesive to adhere the flow passage member and the supply member.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: February 6, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yuichi Ito, Rui Wang, Toru Kakiuchi, Yasuo Kato
  • Publication number: 20180001638
    Abstract: A liquid ejection apparatus, including: first piezoelectric elements arranged on an element-disposed surface in a first direction; a protective cover covering the first piezoelectric elements and including a top wall portion and two side wall portions connected thereto; first wires drawn respectively from the first piezoelectric elements to an outside of the protective cover in a second direction parallel to the element-disposed surface and orthogonal to the first direction and extending on an outer surface of the top wall portion via an outer surface of a corresponding side wall portion; first terminals disposed on the outer surface of the top wall portion and connected respectively to the first wires; and a driver electrically connected to the first terminals, wherein a distance in the first direction between any adjacent two of the first wires on an outer surface of the protective cover is larger than that on the element-disposed surface.
    Type: Application
    Filed: March 27, 2017
    Publication date: January 4, 2018
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Rui WANG, Yasuo KATO, Toru KAKIUCHI, Yuichi ITO
  • Patent number: 9852876
    Abstract: In one embodiment, a multi charged particle beam writing apparatus includes processing circuitry that is programmed to perform the function of a data region determination part determining a data region based on boundaries of pixels obtained by dividing a writing area of a substrate into mesh-shaped regions, an irradiation range of multiple charged particle beams, and boundaries of stripe segments obtained by dividing the writing area into segments having a predetermined width such that the segments are arranged in a predetermined direction, a deflection coordinate adjustment part adjusting deflection coordinates of the multiple charged particle beams such that the boundaries of the pixels are mapped to a boundary of the irradiation range, and a correction part calculating a corrected dose of each beam of the multiple charged particle beams by distributing, based on a positional relationship between the beam and pixels in the data region, a dose of the beam corresponding to a pixel in the data region calculate
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: December 26, 2017
    Assignee: NuFlare Technology, Inc.
    Inventors: Yasuo Kato, Hideo Inoue, Hiroshi Matsumoto, Ryoh Kawana
  • Patent number: 9837247
    Abstract: A charged particle beam writing apparatus includes an area density calculation unit to calculate a pattern area density weighted using a dose modulation value, which has previously been input from an outside and in which an amount of correction of a dimension variation due to a proximity effect has been included, a fogging correction dose coefficient calculation unit to calculate a fogging correction dose coefficient for correcting a dimension variation due to a fogging effect by using the pattern area density weighted using the dose modulation value having been input from the outside, a dose calculation unit to calculates a dose of a charged particle beam by using the fogging correction dose coefficient and the dose modulation value, and a writing unit to write a pattern on a target object with the charged particle beam of the dose.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: December 5, 2017
    Assignee: NuFlare Technology Co., Inc.
    Inventors: Yasuo Kato, Hiroshi Matsumoto
  • Publication number: 20170328806
    Abstract: An evaporation leakage checking system includes a pump, a pump passage unit, a tank passage unit, a specified passage unit, an atmosphere passage unit, a flow-passage area changing unit, an atmosphere valve unit, a pressure sensing unit, and a control unit. The control unit includes a calculating unit that calculates a leakage threshold, based on a first pressure, a first area, an Nth pressure, an Nth area, and a reference area that is predetermined, and a leakage checking unit that activates the pump, closes the atmosphere passage unit by changing the flow-passage area of the atmosphere passage unit by using the atmosphere valve unit, and checks the existence of the evaporation leakage based on the leakage threshold and a checking pressure that is the pressure sensed by the pressure sensor in a case where a communication between the tank passage unit and the pump passage unit is allowed.
    Type: Application
    Filed: May 11, 2017
    Publication date: November 16, 2017
    Inventors: Makoto KANEKO, Yasuo KATO
  • Publication number: 20170282559
    Abstract: A liquid jetting apparatus comprises a flow passage member which has a pressure chamber communicated with a nozzle and a liquid supply port communicated with the pressure chamber; a piezoelectric element with which the flow passage member is provided so that the piezoelectric element is overlapped with the pressure chamber; a protective member which is arranged on the flow passage member so that the piezoelectric element is covered therewith; and a supply member which is formed with a supply flow passage communicated with the liquid supply port of the flow passage member and which is adhered to extend over the flow passage member and the protective member; wherein a layer of a first adhesive to adhere the protective member and the supply member is thicker than a layer of a second adhesive to adhere the flow passage member and the supply member.
    Type: Application
    Filed: March 27, 2017
    Publication date: October 5, 2017
    Inventors: Yuichi ITO, Rui WANG, Toru KAKIUCHI, Yasuo KATO
  • Patent number: 9779913
    Abstract: In one embodiment, a charged particle beam drawing apparatus includes a drawing unit that draws a pattern in a drawing area on a substrate and a control processing circuitry that controls the drawing unit via a process including receiving drawing data with a hierarchical correction map input to the control processing circuitry. The drawing data with the hierarchical map includes a plurality of files in which division maps are respectively described in files in units of subframes. Each division map includes dose correction information associated with corresponding one of blocks of the drawing area. The process further includes generating shot data by performing a data conversion process on the drawing data, reading a division map corresponding to a block in the area to be drawn from the hierarchical correction map, calculating a dose, and controlling the drawing unit based on the shot data and the calculated dose.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: October 3, 2017
    Assignee: NuFlare Technology, Inc.
    Inventors: Shigehiro Hara, Kenichi Yasui, Hiroshi Yamashita, Yasuo Kato, Saori Gomi, Shinji Sakamoto, Takao Tamura, Hideo Tsuchiya, Noriaki Nakayamada, Hironobu Matsumoto
  • Publication number: 20170274649
    Abstract: There is provided an ink-jet head including: first and second head chips each formed with two first nozzle arrays extending in a first direction, each of the first nozzle arrays including first nozzles corresponding to a first ink, second nozzles corresponding to a second ink, and third nozzles corresponding to a third ink; third and fourth head chips each formed with two third nozzle arrays extending in the first direction, each of the third nozzle arrays including fourth nozzles corresponding to the fourth ink. The first head chip to the fourth head chip are arranged in parallel in a second direction orthogonal to the first direction.
    Type: Application
    Filed: February 6, 2017
    Publication date: September 28, 2017
    Inventors: Yasuo KATO, Kyohei NAITO
  • Publication number: 20170229280
    Abstract: In one embodiment, a multi charged particle beam writing apparatus includes processing circuitry that is programmed to perform the function of a data region determination part determining a data region based on boundaries of pixels obtained by dividing a writing area of a substrate into mesh-shaped regions, an irradiation range of multiple charged particle beams, and boundaries of stripe segments obtained by dividing the writing area into segments having a predetermined width such that the segments are arranged in a predetermined direction, a deflection coordinate adjustment part adjusting deflection coordinates of the multiple charged particle beams such that the boundaries of the pixels are mapped to a boundary of the irradiation range, and a correction part calculating a corrected dose of each beam of the multiple charged particle beams by distributing, based on a positional relationship between the beam and pixels in the data region, a dose of the beam corresponding to a pixel in the data region calculate
    Type: Application
    Filed: February 2, 2017
    Publication date: August 10, 2017
    Applicant: NuFlare Technology, Inc.
    Inventors: Yasuo KATO, Hideo INOUE, Hiroshi MATSUMOTO, Ryoh KAWANA
  • Publication number: 20170087825
    Abstract: An inkjet printer comprising a plurality of nozzles, a plurality of pressure chambers, a plurality of diaphragms, a plurality of piezoelectric elements, and a controller. Each of the plurality of diaphragms is deflected between a first state and a second state. The controller is configured to control voltage application to each of the plurality of piezoelectric elements. When a diaphragm is in the first state, the controller applies a first voltage so that the diaphragm is substantially flat; and when the diaphragm is in the second state, the controller applies a second voltage. The controller is configured to control the voltage such that a pressure chamber ejects an ink droplet from the corresponding nozzle in response to the deflection of the diaphragm reverting from the second state to the first state.
    Type: Application
    Filed: March 31, 2016
    Publication date: March 30, 2017
    Inventors: Yasuo Kato, Toru Kakiuchi, Yuichi Ito, Tomoko Hibino
  • Patent number: 9601315
    Abstract: A multiple charged particle beam lithography apparatus includes a weighting coefficient operation unit to operate a plurality of weighting coefficients that assign weights to doses of a plurality of different beams used for multiple pattern writing for each pixel of pixels, the each pixel being used as an irradiation unit region per beam of multiple charged particle beams; a dose operation processing circuitry to operate doses of the plurality of different beams weighted by using a corresponding weighting coefficient among the plurality of weighting coefficients for each of the pixels; and a writing mechanism that writes a pattern on a target object using the multiple charged particle beams such that corresponding pixels are irradiated with the plurality of different beams of the doses weighted respectively.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: March 21, 2017
    Assignee: NuFlare Technology, Inc.
    Inventors: Ryoh Kawana, Yasuo Kato
  • Publication number: 20170066247
    Abstract: A liquid ejection device is disclosed. One device includes a liquid supply member defining a liquid supply channel that is in communication with a common liquid chamber via an outlet of the liquid supply channel. The outlet and the common liquid chamber extend along a longitudinal direction respectively. The liquid supply member includes a plurality of ribs located within the liquid supply channel, the plurality of ribs are disposed side by side in the longitudinal direction. The plurality of ribs includes a first rib, a second rib and a third rib. A distance from the first rib to the third rib in the longitudinal direction is smaller than a distance from the first rib to the second rib in the longitudinal direction.
    Type: Application
    Filed: September 8, 2016
    Publication date: March 9, 2017
    Inventors: Taisuke MIZUNO, Yasuo KATO, Takashi AIBA, Keita SUGIURA
  • Publication number: 20170047194
    Abstract: A multi charged particle beam writing apparatus includes a maximum irradiation time acquisition processing circuitry to acquire, for each shot of multi-beams, a maximum irradiation time of irradiation time of each of the multi-beams, a unit region writing time calculation processing circuitry to calculate, using the maximum irradiation time for each shot, a unit region writing time by totalizing the maximum irradiation time of each shot of a plurality of times of shots of the multi-beams which irradiate a unit region concerned during stage moving, for each unit region of a plurality of unit regions obtained by dividing a writing region of a target object, a stage speed calculation processing circuitry to calculate speed of the stage for each unit region so that the stage speed becomes variable, by using the unit region writing time and a stage control processing circuitry to variably control the stage speed.
    Type: Application
    Filed: August 2, 2016
    Publication date: February 16, 2017
    Applicant: NuFlare Technology, Inc.
    Inventors: Ryoichi YOSHIKAWA, Hideo INOUE, Hayato KIMURA, Yasuo KATO, Jun YASHIMA
  • Patent number: 9564293
    Abstract: A charged particle beam writing apparatus includes a buffer memory including a memory region capable of contemporarily storing writing data for data processing regions, wherein writing data including data files is temporarily stored for each of the data processing regions, a dividing unit to divide the memory region of the buffer memory into a first region being large and a second region being small, a specifying unit to specify the memory region such that a data file being large is preferentially stored in the first region and a data file being small is stored at least in the second region, concerning the data files for each of the data processing regions included in the writing data, and a data processing unit to read data files corresponding to each of the data processing regions from the buffer memory, and to perform data processing using the read data files.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: February 7, 2017
    Assignee: NuFlare Technology, Inc.
    Inventors: Jun Yashima, Yasuo Kato
  • Publication number: 20170018404
    Abstract: In one embodiment, a drawing data creation method includes inputting correction-map-including drawing data having a correction map to a converter, the correction map including dose amount information for each mesh area obtained by dividing a drawing area on a target drawn by a charged particle beam drawing apparatus, the drawing area being divided in a mesh shape, converting dose amount information in a second mesh area adjacent to a first mesh area to a representation based on dose amount information in the first mesh area to compress data of the dose amount information in the second mesh area, and outputting compressed-correction-map-including drawing data having a compressed correction map to a controller, the compressed correction map including dose amount information in which data in each of the plurality of mesh areas has been compressed.
    Type: Application
    Filed: July 7, 2016
    Publication date: January 19, 2017
    Applicant: NUFLARE TECHNOLOGY, INC.
    Inventors: Shigehiro HARA, Kenichi YASUI, Yasuo KATO