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).

  • 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
  • Publication number: 20200042847
    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: Application
    Filed: August 2, 2019
    Publication date: February 6, 2020
    Applicant: OMRON Corporation
    Inventors: Yutaka KATO, Toyoo IIDA, Hitoshi NAKATSUKA
  • Publication number: 20190392193
    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: Application
    Filed: May 16, 2019
    Publication date: December 26, 2019
    Applicant: OMRON Corporation
    Inventors: Hitoshi NAKATSUKA, Toyoo IIDA
  • Publication number: 20180066397
    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: Application
    Filed: March 17, 2016
    Publication date: March 8, 2018
    Applicant: KURARAY CO., LTD.
    Inventors: Yasunori MURATE, Hitoshi NAKATSUKA
  • Patent number: 9752258
    Abstract: A fiber made of a polyester copolymer (B), wherein the polyester copolymer (B) comprises a dicarboxylic acid component and a glycol component, and the dicarboxylic acid component comprises 75 mol % or more of a terephthalic acid component, 1.0 mol % to 3.5 mol % of component (a) derived from a compound represented by formula (I), 2.0 mol % to 10.0 mol % of a cyclohexane dicarboxylic acid component (b), and 2.0 mol % to 8.0 mol % of an aliphatic dicarboxylic acid component (c). This can afford a polyester fiber that exhibits deep color property to cation dyes and disperse dyes under a normal pressure environment and is superior in color fastness to washing and color fastness to light and can secure good spinnability.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: September 5, 2017
    Assignee: KURARAY CO., LTD.
    Inventors: Hitoshi Nakatsuka, Kazuhiko Tanaka, Kazuhide Oka, Daisuke Ohga, Shinya Kawakado
  • Publication number: 20170245763
    Abstract: This photoacoustic imaging device (100) comprises: a display unit (40) that rewrites a screen (40a) at a predetermined refresh rate (RC) and that displays an image on the screen; and a control unit (30) that performs the acquisition of a detection signal and irradiation with light by a semiconductor light-emitting-element light-source unit at a sampling cycle (SC) shorter than the cycle of the predetermined refresh rate, and that creates an image to be displayed on the display unit from the detection signal detected according to the sampling cycle.
    Type: Application
    Filed: August 20, 2015
    Publication date: August 31, 2017
    Inventors: Hitoshi NAKATSUKA, Toshitaka AGANO
  • Patent number: 9746416
    Abstract: A photoacoustic imaging apparatus includes a light source portion and a signal processing portion. The signal processing portion is configured to perform imaging processing on the basis of either a first acoustic wave signal or a second acoustic wave signal by performing processing for disabling either the first acoustic wave signal corresponding to a rising edge of a pulse signal of pulsed light or the second acoustic wave signal corresponding to a falling edge of the pulse signal of the pulsed light.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: August 29, 2017
    Assignee: PreXion Corporation
    Inventor: Hitoshi Nakatsuka
  • Publication number: 20170231503
    Abstract: This photo-acoustic imaging device (100) is provided with: light emitting diodes (16); an acoustic wave detecting unit (14); a device main body (2) in which a light source driving unit (22) including a power supply unit (22a) and a signal generating unit (22b) is provided; and a coaxial cable (3). For the coaxial cable (3), an external conductor (3c) of the coaxial cable (3) is connected to the power supply unit (22a) and an internal conductor (3a) of the coaxial cable (3) is connected to the signal generating unit (22b).
    Type: Application
    Filed: July 3, 2015
    Publication date: August 17, 2017
    Inventors: Hitoshi NAKATSUKA, Kazuo KITAGAWA, Takamitsu HANAOKA
  • Publication number: 20170191190
    Abstract: Disclosed is a polyamide fiber having a degree of orientation equal to or higher than 0.7 and equal to or lower than 0.85. The polyamide fiber is suitably obtained by forming a polyamide component having high moisture absorbency and a specific soluble component into a conjugated fiber under specific fiber formation conditions.
    Type: Application
    Filed: May 21, 2015
    Publication date: July 6, 2017
    Applicant: KURARAY CO., LTD.
    Inventors: Hitoshi NAKATSUKA, Shinya KAWAKADO, Takayuki IKEDA, Daisuke OHGA, Yasunori MURATE
  • Publication number: 20160058292
    Abstract: This photoacoustic imager includes a light-emitting element, an acoustic wave detection portion and a light source driving portion, and the light source driving portion is configured to substantially null the value of current flowing in the light-emitting element by stopping supplying power to the light-emitting element on the basis of that the value of the current flowing in the light-emitting element has reached a prescribed current value.
    Type: Application
    Filed: July 2, 2015
    Publication date: March 3, 2016
    Inventor: Hitoshi NAKATSUKA
  • Publication number: 20160058291
    Abstract: In this photoacoustic imager, a light source driving portion is configured to stop power supply to a plurality of light-emitting semiconductor elements on the basis of that a forward voltage detection portion has detected forward voltage values of the plurality of light-emitting semiconductor elements corresponding to short circuiting of the light-emitting semiconductor elements.
    Type: Application
    Filed: July 2, 2015
    Publication date: March 3, 2016
    Inventor: Hitoshi NAKATSUKA
  • Publication number: 20160058290
    Abstract: This photoacoustic imager includes a light source portion and a detection portion, and is configured to set pulsed light emitted by the light source portion to a pulse width tw expressed in the following expression, assuming that fmax represents the maximum frequency of an acoustic wave A detected by the detection portion: 0.
    Type: Application
    Filed: July 2, 2015
    Publication date: March 3, 2016
    Inventors: Hitoshi NAKATSUKA, Toshitaka AGANO
  • Publication number: 20160045185
    Abstract: This photoacoustic imager includes a light source portion, a detection portion, an amplification portion and an imaging portion, and the amplification portion is so configured that an acoustic gain which is a gain of the amplification portion for amplifying a detection signal resulting from an acoustic wave is larger than an ultrasonic gain which is a gain of the amplification portion for amplifying a detection signal resulting from an ultrasonic wave.
    Type: Application
    Filed: July 2, 2015
    Publication date: February 18, 2016
    Inventors: Hitoshi NAKATSUKA, Toshitaka AGANO
  • Publication number: 20160038034
    Abstract: This puncture needle for a photoacoustic imager is a puncture needle for a photoacoustic imager including a semiconductor light-emitting element light source portion, and includes a puncture needle body and a cover layer, formed on a surface of the puncture needle body, made of a cover material containing a material higher in light absorptivity than the puncture needle body and a resin material larger in linear expansion coefficient than the puncture needle body.
    Type: Application
    Filed: August 10, 2015
    Publication date: February 11, 2016
    Inventor: Hitoshi NAKATSUKA
  • Publication number: 20150297091
    Abstract: A photoacoustic imaging device includes a light source that emits pulsed light at a subject, an ultrasonic transducer that converts vibration of a detection object of the subject that is generated according to the pulsed light to an electric signal, and a controller that selectively activates or deactivates the ultrasonic transducer, the controller deactivating the ultrasonic transducer while the light source emits the pulsed light.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 22, 2015
    Inventor: Hitoshi NAKATSUKA
  • Publication number: 20150153269
    Abstract: A photoacoustic imaging apparatus includes a light source portion and a signal processing portion. The signal processing portion is configured to perform imaging processing on the basis of either a first acoustic wave signal or a second acoustic wave signal by performing processing for disabling either the first acoustic wave signal corresponding to a rising edge of a pulse signal of pulsed light or the second acoustic wave signal corresponding to a falling edge of the pulse signal of the pulsed light.
    Type: Application
    Filed: November 10, 2014
    Publication date: June 4, 2015
    Inventor: Hitoshi NAKATSUKA