Patents by Inventor Hitoshi Nakatsuka

Hitoshi Nakatsuka 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: 20230366132
    Abstract: Provided are a sea-island type composite multifilament which includes a thermoplastic elastomer resin as an island component, and an ultrafine multifilament prepared from such a sea-island type composite multifilament. The sea-island type composite multifilament includes an island component and a sea component. The island component includes a thermoplastic elastomer resin (A) having at least one of a Shore A hardness of 90 or less, a Shore D hardness of 60 or less, or a Rockwell hardness (R scale) of 70 or less. The sea component includes a water-soluble or easily alkali-soluble thermoplastic resin (B). The sea-island type composite multifilament has an average single island diameter of 8000 nm or less.
    Type: Application
    Filed: July 11, 2023
    Publication date: November 16, 2023
    Applicant: KURARAY TRADING CO., LTD.
    Inventors: Takayuki IKEDA, Hitoshi Nakatsuka, Shinya Kawakado, Kohei Yamasaki
  • Publication number: 20230272145
    Abstract: A composite fiber contains a component A as a core component and a component B at least partially covering the component A. The component A contains a vibration damping elastomer having a peak top intensity of tan ? of 0.5 or more. The component B contains a thermoplastic elastomer having a peak top intensity of tan ? of less than 0.5. The component B covers 70% or more of the cross-sectional perimeter of the component A in the fiber cross-section.
    Type: Application
    Filed: October 4, 2021
    Publication date: August 31, 2023
    Applicant: KURARAY TRADING CO., LTD.
    Inventors: Kohei YAMASAKI, Hitoshi NAKATSUKA, Takayuki IKEDA, Shoji ONOGI
  • Publication number: 20220397739
    Abstract: An optical assembly (13) for a three-dimensional measurement device is equipped with: an optical lens (320) that forms a pair of conjugate planes having an optically conjugate relationship; an optical device (341) that is disposed on one of the pair of conjugate planes; a temperature sensor (354) for detecting the temperature of the optical lens (320); a heater (350) for heating the optical lens (320); and a control part that controls the operation of the heater (350) on the basis of the result of the detection made by the temperature sensor (354) such that the optical lens (320) reaches a constant temperature.
    Type: Application
    Filed: August 28, 2020
    Publication date: December 15, 2022
    Applicant: OMRON Corporation
    Inventors: Takeshi INODA, Tomonori ARIYOSHI, Hitoshi NAKATSUKA, Motoharu OKUNO, Shinya MATSUMOTO, Jun OTA, Tetsuya KIGUCHI
  • Patent number: 11473218
    Abstract: A modified ethylene-vinyl alcohol copolymer fiber includes an ethylene-vinyl alcohol copolymer containing 0.1 to 10 mol % of a modified component and 5 to 55 mol % of ethylene, and has a crystallinity of 25% to 50%.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: October 18, 2022
    Assignee: KURARAY CO., LTD.
    Inventors: Shoji Onogi, Hitoshi Nakatsuka, Shinya Kawakado, Takayuki Ikeda
  • Publication number: 20220267598
    Abstract: Provided is a polyamide fiber having excellent color developability, as well as a method for producing such a polyamide fiber, and a fiber structure. The polyamide fiber comprises a polyamide resin composition comprising a polyamide resin and an amino group-containing color enhancer, the polyamide fiber having terminal amino groups at a concentration of from 5.0 ?eq/g to 40.0 ?eq/g. Such a fiber can be produced by a production method at least comprising: melt-kneading a polyamide resin composition including a polyamide resin and an amino group-containing color enhancer to give a melt-kneaded product having a predetermined melt viscosity; and spinning the melt-kneaded product to give fibers.
    Type: Application
    Filed: May 12, 2022
    Publication date: August 25, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Daisuke OHGA, Hitoshi NAKATSUKA, Shinya KAWAKADO, Takayuki IKEDA, Shoji ONOGI, Kohei YAMASAKI
  • Patent number: 11339530
    Abstract: Disclosed is a napped artificial leather including: an artificial leather base material that includes a non-woven fabric of polyester fibers having a Young's modulus of 1 to 6 GPa, an average fiber-toughness of 8 to 40 cN·%, and a crystallinity of 35% or less, and an elastic polymer, the artificial leather base material having, on at least one surface thereof, a napped surface on which the polyester fibers are napped. Also disclosed are polyester fibers having a Young's modulus of 1 to 6 GPa, an average fiber-toughness of 8 to 40 cN·%, and a crystallinity of 35% or less, and a non-woven fabric including the polyester fibers.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: May 24, 2022
    Assignee: Kuraray Co., Ltd.
    Inventors: Masashi Meguro, Hitoshi Nakatsuka
  • Publication number: 20220112630
    Abstract: Provided is an electroconductive composite fiber having excellent antistatic capability and cationic dyability as well as a fiber structure including the same. The electroconductive composite fiber at least includes an electroconductive layer and a non-electroconductive layer disposed in contact with the electroconductive layer, wherein the electroconductive layer contains an electroconductive substance, and the non-electroconductive layer contains a modified polyester comprising a phosphonium-containing dicarboxylic acid component as a copolymerization component.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Shoji ONOGI, Kohei YAMASAKI, Hitoshi NAKATSUKA
  • Patent number: 11262193
    Abstract: This three-dimensional measurement device includes: a light source, a lens guiding light from the light source to a subject, a photomask disposed on the optical axis between the light source and lens and having a predetermined pattern, a driving device changing the position of one member from the lens and photomask or changing an optical characteristic of the lens, and a control unit controlling the driving device. The control unit fixes an image formation position for light/dark pattern light formed by the photomask at the position of the subject by fixing the position of said member or the optical characteristic of the lens when specifying a first mode, and varies the position of the member or the optical characteristic of the lens to vary the image formation position for the light/dark pattern light such that the light/dark difference caused by the light/dark pattern light is smaller than in the first mode when specifying a second mode.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 1, 2022
    Assignee: OMRON Corporation
    Inventors: Motoharu Okuno, Hitoshi Nakatsuka
  • Publication number: 20220025553
    Abstract: The present invention relates to a composite fiber for obtaining a fiber having a strength at 100% elongation of 0.04 cN/dtex or less, wherein the composite fiber is composed of component X comprising a polyvinyl-based thermoplastic elastomer, or a thermoplastic polyurethane elastomer having a glass transition temperature of 0° C. or lower, and component Y which is an easily soluble thermoplastic polymer, wherein the composite ratio (mass ratio) X:Y of the component X and the component Y is within the range of from 90:10 to 50:50, and wherein the composite fiber has a core-sheath structure in which the component X constitutes the core component, and the component Y constitutes the sheath component, in a cross section of the fiber.
    Type: Application
    Filed: December 4, 2019
    Publication date: January 27, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Shoji ONOGI, Takayuki IKEDA, Shinya KAWAKADO, Hitoshi NAKATSUKA
  • Publication number: 20210310186
    Abstract: Disclosed is an artificial leather base material including: a non-woven fabric that is an entangle body of fibers (A) and fibers (B); and an elastic polymer applied inside the non-woven fabric, wherein the fibers (A) are crimped fibers that are formed from two types of resins with intrinsic viscosities different from each other, and that are filaments of 0.6 dtex or more, and the fibers (B) are ultrafine fibers of less than 0.6 dtex.
    Type: Application
    Filed: July 29, 2019
    Publication date: October 7, 2021
    Applicant: KURARAY CO., LTD.
    Inventors: Masashi MEGURO, Hitoshi NAKATSUKA
  • Publication number: 20210262786
    Abstract: This three-dimensional measurement device includes: a light source, a lens guiding light from the light source to a subject, a photomask disposed on the optical axis between the light source and lens and having a predetermined pattern, a driving device changing the position of one member from the lens and photomask or changing an optical characteristic of the lens, and a control unit controlling the driving device. The control unit fixes an image formation position for light/dark pattern light formed by the photomask at the position of the subject by fixing the position of said member or the optical characteristic of the lens when specifying a first mode, and varies the position of the member or the optical characteristic of the lens to vary the image formation position for the light/dark pattern light such that the light/dark difference caused by the light/dark pattern light is smaller than in the first mode when specifying a second mode.
    Type: Application
    Filed: May 30, 2019
    Publication date: August 26, 2021
    Applicant: OMRON Corporation
    Inventors: Motoharu OKUNO, Hitoshi NAKATSUKA
  • Patent number: 11023706
    Abstract: A measurement system includes a first distance calculation unit that searches for a corresponding region, indicating a same array as an array of codes indicated by a predetermined number of reference patterns included in a unit region set in the projection pattern, from a set of the codes, and calculates a distance from an irradiation reference surface of the projection pattern to each portion of the object on the basis of a search result of the corresponding region, and a second distance calculation unit that attempts to estimate a distance for the defective portion for which the first distance calculation unit is not able to calculate the distance by reconstructing an incomplete code corresponding to the defective portion using peripheral information in the input image.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: June 1, 2021
    Assignee: OMRON Corporation
    Inventors: Hitoshi Nakatsuka, Toyoo Iida
  • Patent number: 10982382
    Abstract: Disclosed is a napped artificial leather dyed with a cationic dye, including: a non-woven fabric of a cationic dyeable polyester fiber having a fineness of 0.07 to 0.9 dtex; and an elastic polymer provided inside the non-woven fabric, wherein the napped artificial leather has L* value?50, a grade of color difference determined in an evaluation of color migration to PVC under a load 0.75 kg/cm at 50° C. for 16 hours, of 4 or more, a tear strength per mm of thickness of 30 N or more, and a peel strength of 3 kg/cm or more.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: April 20, 2021
    Assignee: KURARAY CO., LTD.
    Inventors: Yasunori Murate, Hitoshi Nakatsuka
  • Publication number: 20210094257
    Abstract: A fusing fabric may be used for thermal fusion of a plurality of plies of fabric. The fusing fabric contains at least partially fusible fibers containing a resin that has a melting point of 150° C. or lower or a softening point of 110° C. or lower, and has an air permeability of 1000 cm3/cm2·s or more to 10000 cm3/cm2·s or less.
    Type: Application
    Filed: February 19, 2019
    Publication date: April 1, 2021
    Applicant: KURARAY CO., LTD.
    Inventors: Shoji Onogi, Hitoshi Nakatsuka, Takayuki Ikeda, Shinya Kawakado
  • Patent number: 10867225
    Abstract: A measurement system includes a first search part and a second search part. The first search part searches a set of codes for a corresponding region that indicates the same sequence as a model code string composed of a predetermined number of codes included in a unit region set in a projection pattern. The second search part searches the set of codes for a code that matches each code included in a model code string that fails in the search for the corresponding region among the model code strings included in the projection pattern, and then determines recognition of the model code string when the number of the codes that fail to be searched in this search is equal to or smaller than a predetermined number.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: December 15, 2020
    Assignee: OMRON Corporation
    Inventors: Yutaka Kato, Toyoo Iida, Hitoshi Nakatsuka
  • Publication number: 20200362475
    Abstract: A modified ethylene-vinyl alcohol copolymer fiber includes an ethylene-vinyl alcohol copolymer containing 0.1 to 10 mol % of a modified component and 5 to 55 mol % of ethylene, and has a crystallinity of 25% to 50%.
    Type: Application
    Filed: December 20, 2018
    Publication date: November 19, 2020
    Applicant: KURARAY CO., LTD.
    Inventors: Shoji ONOGI, Hitoshi NAKATSUKA, Shinya KAWAKADO, Takayuki IKEDA
  • Publication number: 20200056329
    Abstract: Disclosed is a napped artificial leather including: an artificial leather base material that includes a non-woven fabric of polyester fibers having a Young's modulus of 1 to 6 GPa, an average fiber-toughness of 8 to 40 cN·%, and a crystallinity of 35% or less, and an elastic polymer, the artificial leather base material having, on at least one surface thereof, a napped surface on which the polyester fibers are napped. Also disclosed are polyester fibers having a Young's modulus of 1 to 6 GPa, an average fiber-toughness of 8 to 40 cN·%, and a crystallinity of 35% or less, and a non-woven fabric including the polyester fibers.
    Type: Application
    Filed: November 29, 2017
    Publication date: February 20, 2020
    Applicant: KURARAY CO., LTD.
    Inventors: Masashi MEGURO, Hitoshi NAKATSUKA
  • Patent number: D997746
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: September 5, 2023
    Assignee: OMRON Corporation
    Inventors: Takeshi Inoda, Hitoshi Nakatsuka, Tomonori Ariyoshi, Motoharu Okuno
  • Patent number: D997747
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: September 5, 2023
    Assignee: OMRON Corporation
    Inventors: Takeshi Inoda, Hitoshi Nakatsuka, Tomonori Ariyoshi, Motoharu Okuno
  • Patent number: D997748
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: September 5, 2023
    Assignee: OMRON Corporation
    Inventors: Takeshi Inoda, Hitoshi Nakatsuka, Tomonori Ariyoshi, Motoharu Okuno