Patents by Inventor Yu Nagahara

Yu Nagahara 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: 11895762
    Abstract: An irradiator includes: a first electrode to which a voltage is applied for generating a plasma; and a holding member holding the first electrode; wherein: the holding member has a first member and a second member that are in contact with each other to constitute an accommodation space accommodating the first electrode; and a contact surface between the first member and the second member includes a non-perpendicular contact surface that is non-perpendicular to an axis of the first electrode.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: February 6, 2024
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Tatsuya Matsuo, Yoshishige Takikawa, Yu Nagahara, Naomichi Saito, Masaki Iwasaki, Takaya Oshita
  • Publication number: 20230105530
    Abstract: An irradiator includes: a first electrode to which a voltage is applied for generating a plasma; and a holding member holding the first electrode; wherein: the holding member has a first member and a second member that are in contact with each other to constitute an accommodation space accommodating the first electrode; and a contact surface between the first member and the second member includes a non-perpendicular contact surface that is non-perpendicular to an axis of the first electrode.
    Type: Application
    Filed: March 17, 2021
    Publication date: April 6, 2023
    Inventors: Tatsuya MATSUO, Yoshishige TAKIKAWA, Yu NAGAHARA, Naomichi SAITO, Masaki IWASAKI, Takaya OSHITA
  • Patent number: 11383092
    Abstract: The present invention provides a reactive gas application apparatus capable of easily and surely applying a reactive gas to a target object. The reactive gas application apparatus (100) includes: a plasma generating unit (12), a nozzle (1) for discharging a reactive gas activated by plasma generated in the plasma generation unit (12), and a light source unit (50) for emitting light toward a position ahead of a tip of the nozzle (1). The reactive gas application apparatus preferably further includes a control unit for synchronizing plasma generation in the plasma generation unit and light emission in the light source unit.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: July 12, 2022
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yu Nagahara, Yoshishige Takikawa, Takaya Oshita, Tsuyoshi Uehara
  • Publication number: 20210213298
    Abstract: A plasma application apparatus including: an application instrument which has a plasma generation unit, and is configured to discharge at least one of plasma generated by the plasma generation unit and a reactive gas generated by the plasma; and a supply unit for supplying electric power and a plasma generating gas to the application instrument, a supporting part extending upward from the supply unit, a power/gas supply line connecting the application instrument to the supply unit, and a connecting part connecting at least one of the application instrument and the power/gas supply line to the supporting part,
    Type: Application
    Filed: June 28, 2019
    Publication date: July 15, 2021
    Inventors: Masahiro TAKATA, Tsuyoshi UEHARA, Akiko TOGI, Takaya OSHITA, Motoharu ATAKA, Mayuka TADA, Yu NAGAHARA, Tsuyoshi INOUE
  • Publication number: 20210170186
    Abstract: The plasma application therapeutic apparatus of the present invention includes: a plasma generating unit, a nozzle for discharging at least one of plasma generated by the plasma generating unit and a reactive gas generated by the plasma, a supply source for supplying a plasma generating gas to the plasma generating unit, an operation unit which is configured to be activated by a user to allow the supply source to supply a predetermined amount of the plasma generating gas to the plasma generating unit, and a reporting unit which is configured to report a remaining gas information in terms of remaining number of times allowed for the supply source to supply the plasma generating gas to the plasma generating unit, based on the plasma generating gas remaining in the supply source.
    Type: Application
    Filed: November 7, 2018
    Publication date: June 10, 2021
    Inventors: Yu NAGAHARA, Tsuyoshi UEHARA, Takaya OSHITA, Yoshishige TAKIKAWA
  • Publication number: 20200030621
    Abstract: The present invention provides a reactive gas application apparatus capable of easily and surely applying a reactive gas to a target object. The reactive gas application apparatus (100) includes: a plasma generating unit (12), a nozzle (1) for discharging a reactive gas activated by plasma generated in the plasma generation unit (12), and a light source unit (50) for emitting light toward a position ahead of a tip of the nozzle (1). The reactive gas application apparatus preferably further includes a control unit for synchronizing plasma generation in the plasma generation unit and light emission in the light source unit.
    Type: Application
    Filed: August 31, 2018
    Publication date: January 30, 2020
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yu NAGAHARA, Yoshishige TAKIKAWA, Takaya OSHITA, Tsuyoshi UEHARA
  • Patent number: 10462892
    Abstract: The present invention discloses a medical therapeutic apparatus (100) which generates plasma and blows out an reactive gas generated by the generated plasma toward a target object from an outlet, wherein a temperature of the reactive gas at a target surface positioned at a distance of 1 mm or more and 10 mm or less from the outlet is 40° C. or less, and a radical concentration is 0.1 to 300 ?mol/L as determined by a hydroxy radical concentration measuring method comprising applying the reactive gas to 0.4 mL of a 0.2 mol/L solution of DMPO (5,5-dimethyl-1-pyrroline-N-oxide) for 30 seconds with a distance from the outlet to a liquid surface of the solution being 5.0 mm, and measuring a hydroxyl radical concentration of the resulting solution by electron spin resonance (ESR) method.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: October 29, 2019
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Takaya Oshita, Tsuyoshi Uehara, Yu Nagahara, Yoshishige Takikawa
  • Patent number: 10433411
    Abstract: A plasma generating apparatus including: a plasma generating unit including a tubular dielectric to which an atmospheric pressure plasma generation gas is introduced, an inner electrode extending in a hollow portion of the tubular dielectric in axial direction of the tubular dielectric and having a coil shape or an irregular surface, and an outer electrode provided on the outside of the tubular dielectric, the inner electrode and the outer electrode being positioned opposite to each other through the tubular dielectric; and a discharge port for discharging an active gas containing active species generated by the atmospheric pressure plasma generated in the plasma generating unit.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: October 1, 2019
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hiroaki Aiba, Tsuyoshi Uehara, Yu Nagahara, Takaya Oshita, Yoshishige Takikawa, Mikimoto Kanazashi, Akira Morooka
  • Publication number: 20190215941
    Abstract: The present invention discloses a medical therapeutic apparatus (100) which generates plasma and blows out an reactive gas generated by the generated plasma toward a target object from an outlet, wherein a temperature of the reactive gas at a target surface positioned at a distance of 1 mm or more and 10 mm or less from the outlet is 40° C. or less, and a radical concentration is 0.1 to 300 ?mol/L as determined by a hydroxy radical concentration measuring method comprising applying the reactive gas to 0.4 mL of a 0.2 mol/L solution of DMPO (5,5-dimethyl-1-pyrroline-N-oxide) for 30 seconds with a distance from the outlet to a liquid surface of the solution being 5.0 mm, and measuring a hydroxyl radical concentration of the resulting solution by electron spin resonance (ESR) method.
    Type: Application
    Filed: June 15, 2018
    Publication date: July 11, 2019
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Takaya OSHITA, Tsuyoshi UEHARA, Yu NAGAHARA, Yoshishige TAKIKAWA
  • Publication number: 20190209854
    Abstract: A reactive gas application apparatus including an instrument (10) which includes: a plasma generating unit (12); and an outlet (1a) for blowing out a reactive gas activated by plasma, the plasma generating unit (12) including: a tubular dielectric (3) to which a plasma generation gas is introduced; an inner electrode (4) provided inside the tubular dielectric (3), and extending in a tube axis direction (O1) of the tubular dielectric (3); and an outer electrode (5) provided outside the tubular dielectric (3) and faces the inner electrode (4) through the tubular dielectric, wherein the inner electrode (4) has a shaft portion extending in the tube axis direction and a spiral ridge formed on an outer peripheral surface of the shaft portion.
    Type: Application
    Filed: June 15, 2018
    Publication date: July 11, 2019
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yu NAGAHARA, Takaya OSHITA, Yoshishige TAKIKAWA, Tsuyoshi UEHARA
  • Publication number: 20180368245
    Abstract: A plasma generating apparatus including: a plasma generating unit including a tubular dielectric to which an atmospheric pressure plasma generation gas is introduced, an inner electrode extending in a hollow portion of the tubular dielectric in axial direction of the tubular dielectric and having a coil shape or an irregular surface, and an outer electrode provided on the outside of the tubular dielectric, the inner electrode and the outer electrode being positioned opposite to each other through the tubular dielectric; and a discharge port for discharging an active gas containing active species generated by the atmospheric pressure plasma generated in the plasma generating unit.
    Type: Application
    Filed: June 1, 2018
    Publication date: December 20, 2018
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Hiroaki AIBA, Tsuyoshi UEHARA, Yu NAGAHARA, Takaya OSHITA, Yoshishige TAKIKAWA, Mikimoto KANAZASHI, Akira MOROOKA
  • Patent number: 9279908
    Abstract: The present invention relates to an ink for an electrowetting element comprising colorant particles and a solvent, wherein the colorant particles have a specific gravity of 2 or less and an average particle diameter of 20 to 300 nm, and wherein the content of the colorant particles in the ink is 5 to 50% by mass.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: March 8, 2016
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yu Nagahara, Takeshi Wakiya
  • Publication number: 20150225500
    Abstract: Provided is a colored particle used for an electrowetting display that is capable of enhancing the dispersibility in an ink for an electrowetting display. In the colored particle for an electrowetting display according to the present invention, a surface of the particle is formed from a compound containing only a carbon atom and a hydrogen atom as constituent atoms or a surface of the particle is formed from a compound in which the total amount of a carbon atom, a hydrogen atom, an oxygen atom, a nitrogen atom, and a sulfur atom is 95% by mass or more relative to 100% by mass of total of constituent atoms, and the mass ratio of the amount of the carbon atom to the total amount of the oxygen atom, the nitrogen atom, and the sulfur atom is 5 or more.
    Type: Application
    Filed: August 29, 2013
    Publication date: August 13, 2015
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Yu Nagahara, Takeshi Wakiya
  • Publication number: 20140347716
    Abstract: The present invention relates to an ink for an electrowetting element comprising colorant particles and a solvent, wherein the colorant particles have a specific gravity of 2 or less and an average particle diameter of 20 to 300 nm, and wherein the content of the colorant particles in the ink is 5 to 50% by mass.
    Type: Application
    Filed: January 25, 2013
    Publication date: November 27, 2014
    Inventors: Yu Nagahara, Takeshi Wakiya