Patents by Inventor Takeshi Wakiya

Takeshi Wakiya 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: 20210061820
    Abstract: Metal complex particle including a magnetic material and a particle size adjusting composition containing a hydrophobic polymer, with the magnetic material including a metal complex consisting of a metal ion and a ligand and having both magnetism and fluorescence, and a content of the particle size adjusting composition in the metal complex particle being less than 60 w %.
    Type: Application
    Filed: December 28, 2018
    Publication date: March 4, 2021
    Applicants: SEKISUI CHEMICAL CO., LTD., SEKISUI MEDICAL CO., LTD.
    Inventors: Mai YAMAGAMI, Shuhei OBINATA, Takeshi WAKIYA, Maasa YAJI
  • Publication number: 20210054271
    Abstract: A lanthanoid-containing inorganic material fine particle having a function of converting a wavelength of light to a shorter wavelength, the lanthanoid-containing inorganic material fine particle including: a core particle; and a shell layer, the core particle containing a lanthanoid having a light-absorbing function and a lanthanoid having a light-emitting function, the shell layer including at least an outer shell containing a rare earth element, the total amount of the lanthanoid having a light-absorbing function and the lanthanoid having a light-emitting function in the outer shell being 2 mol % or less based on the amount of the rare earth element contained in the outer shell, the outer shell having a thickness of 2 to 20 nm, the core particle and the shell layer having no interface at a contact face to form a continuous body.
    Type: Application
    Filed: January 24, 2017
    Publication date: February 25, 2021
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Taku SASAKI, Takeshi WAKIYA, Kenji OOHASHI
  • Publication number: 20200181486
    Abstract: The present invention provides fluorescent particles for a diagnostic agent which contain a synthetic polymer and at least 10 mass %, on a total particle mass basis, of an aggregation-induced emission material, and have on the surface thereof a binding partner which binds with an analyte. These fluorescent particles for a diagnostic agent are non-toxic, have improved visibility and reproducibility, and support a binding partner for an analyte.
    Type: Application
    Filed: August 31, 2017
    Publication date: June 11, 2020
    Applicants: SEKISUI CHEMICAL CO., LTD., SEKISUI MEDICAL CO., LTD.
    Inventors: Tadashi IWAMOTO, Satoru SUGIMOTO, Takeshi WAKIYA, Shinichiro KITAHARA, Maasa YAJI
  • Publication number: 20200080996
    Abstract: The present invention relates to latex particles for measurement reagents, said latex particles having a coefficient of variation in particle diameters of 10% or less and an average particle diameter of 250 to 1000 nm. Each of the latex particles contains 20% by weight or more of a compound having a refractive index of 1.60 or more. The depth of a supernatant is 5 mm or less when a liquid dispersion having a solid matter concentration of 1% by weight, which is prepared by dispersing the latex particles in ultrapure water, is placed in a tubular 10-ml measuring cylinder having a body inner diameter of 10.8 mm and is then allowed to leave for 10 days. According to the particles, a measurement of a measurement sample can be performed at a high sensitivity even when the concentration of a substance to be tested in the measurement sample is low.
    Type: Application
    Filed: May 24, 2018
    Publication date: March 12, 2020
    Applicants: SEKISUI CHEMICAL CO., LTD., SEKISUI MEDICAL CO., LTD.
    Inventors: Satoru SUGIMOTO, Takeshi WAKIYA, Shinichiro KITAHARA, Maasa YAJI, Yuya INABA
  • Publication number: 20190226988
    Abstract: This analyte concentration measuring method including: preparing a mixed solution by mixing a sample solution containing an analyte, with a solution containing aggregation-induced emission fluorescent material-containing particles that have a binding partner which binds with the analyte and that agglutinate and fluoresce when the analyte binds to the binding partner; measuring the fluorescence intensity generated from the aggregation-induced emission fluorescent material-containing particles in the mixed solution; and comparing a fluorescence intensity calibration curve for analyte concentration with the fluorescence intensity, and associating the fluorescence intensity with the analyte concentration in the mixed solution. Employing agglutinating-luminescent-material-containing particles enables measurements to be carried out with a satisfactory detection sensitivity while suppressing background fluorescence.
    Type: Application
    Filed: August 31, 2017
    Publication date: July 25, 2019
    Applicants: SEKISUI CHEMICAL CO., LTD., SEKISUI MEDICAL CO., LTD.
    Inventors: Tadashi IWAMOTO, Satoru SUGIMOTO, Takeshi WAKIYA, Shinichiro KITAHARA, Maasa YAJI
  • Publication number: 20180318970
    Abstract: Particles that can suppress the occurrence of cracking during a stress load in a connection part that connects two members to be connected are provided. The particles according to the present invention are particles used to obtain a connecting material for forming the connection part that connects two members to be connected, and the particles are used for forming the connection part such that thickness of the connection part after connection exceeds twice the average particle diameter of the particles before connection, or the particles have an average particle diameter of 0.1 ?or more and 15 ?m or loss, the particles have a 10% K value of exceeding 3000 N/mm2 and 20000 K/mm2 or less, and the particles have a particle diameter CV value of 50% or less.
    Type: Application
    Filed: November 18, 2016
    Publication date: November 8, 2018
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Mai YAMAGAMI, Satoshi HANEDA, Takeshi WAKIYA, Yasuyuki YAMADA, Saori UEDA, Masao SASADAIRA
  • Publication number: 20180297154
    Abstract: Particles that can suppress the occurrence of cracking or peeling during a thermal cycle in a connection part, that connects two members to be connected are provided. The particles according to the present invention are particles used to obtain a connecting material for forming a connection part that connects two members to be connected, and the particles are used for forming the connection part such that thickness of the connection part, after connection exceeds twice the average particle diameter of the particles before connection, or the particles have an average particle diameter of 0.1 nm or more and 15 ?m or less, the particles have a 10% K value of 30 N/mm2 or more and 3000 N/mm2 or less, and the particles have a particle diameter CV value of 50% or less.
    Type: Application
    Filed: November 18, 2016
    Publication date: October 18, 2018
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Mai YAMAGAMI, Satoshi HANEDA, Takeshi WAKIYA, Yasuyuki YAMADA, Saori UEDA, Masao SASADAIRA
  • Publication number: 20180297153
    Abstract: A connecting material that can suppress the occurrence of cracking during a stress load in a connection part that connects two members to be connected, further can suppress the variation in thickness in the connection part to ensure the heat dissipation performance, and can increase the connection strength is provided. The connecting material according to the present invention is a connecting material used for forming the connection part that connects two members to be connected, the connecting material contains particles and metal atom-containing particles, the particles are used for forming the connection part such that thickness of the connection part after connection is twice or less the average particle diameter of the particles before connection, or the particles have an average particle diameter of 1 ?m or more and 300 ?m or less, the particles have a 10% K value of exceeding 3000 N/mm2 and 20000 N/mm2 or less, and the particles have a particle diameter CV value of 10% or less.
    Type: Application
    Filed: November 18, 2016
    Publication date: October 18, 2018
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Mai YAMAGAMI, Satoshi HANEDA, Takeshi WAKIYA, Yasuyuki YAMADA, Saori UEDA, Masao SASADAIRA
  • Publication number: 20180301237
    Abstract: Particles that can suppress the occurrence of cracking or peeling during a thermal cycle in a connection part that connects two members to be connected, further can suppress the variation in thickness in the connection part, and can increase the connection strength are provided. The particles according to the present invention are particles used to obtain a connecting material for forming a connection part that connects two members to be connected, and the particles are used for forming the connection part such that thickness of the connection part after connection is twice or less the average particle diameter of the particles before connection, or the particles have an average particle diameter of 1 ?m or more and 300 ?m or less, the particles have a 10% K value of 30 N/mm2 or more and 3000 N/mm2 or less, and the particles have a particle diameter CV value of 10% or less.
    Type: Application
    Filed: November 18, 2016
    Publication date: October 18, 2018
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Mai YAMAGAMI, Satoshi HANEDA, Takeshi WAKIYA, Yasuyuki YAMADA, Saori UEDA, Masao SASADAIRA
  • Publication number: 20180282491
    Abstract: A polymer fine particle including a block copolymer having two or more segments, wherein the polymer fine particle has a microphase separated structure on a surface thereof, the number-average particle size is 50 nm to 1000 nm, and the coefficient of variation is less than 20%. The polymer fine particle permits highly sensitive assay by controlling the antigen- or antibody-immobilized state of the particle surface.
    Type: Application
    Filed: September 30, 2016
    Publication date: October 4, 2018
    Applicants: SEKISUI CHEMICAL CO., LTD., SEKISUI MEDICAL CO., LTD.
    Inventors: Satoru SUGIMOTO, Tadashi IWAMOTO, Takeshi WAKIYA, Shinichiro KITAHARA, Maasa IKEGAMI
  • Patent number: 9594243
    Abstract: An electrowetting device 1 includes a device body 10, a dielectric layer 14, an electrode, a non-polar liquid 17, and a polar liquid 16. The device body 10 includes a cell C. The dielectric layer 14 is disposed in the cell C. The dielectric layer 14 has a hydrophobic surface. The electrode is configured to polarize the dielectric layer 14. The non-polar liquid 17 is disposed on the hydrophobic surface in the cell C. The polar liquid 16 is non-miscible with the non-polar liquid 17. The polar liquid 16 is disposed on the hydrophobic surface in the cell C. The non-polar liquid 17 contains a colored material. The polar liquid 16 contains non-ionic molecules. The non-ionic molecule has a polar portion and a non-polar portion.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: March 14, 2017
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Shigeki Nomura, Takeshi Wakiya
  • 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: 20160004066
    Abstract: An electrowetting device 1 includes a device body 10, a dielectric layer 14, an electrode, a non-polar liquid 17, and a polar liquid 16. The device body 10 includes a cell C. The dielectric layer 14 is disposed in the cell C. The dielectric layer 14 has a hydrophobic surface. The electrode is configured to polarize the dielectric layer 14. The non-polar liquid 17 is disposed on the hydrophobic surface in the cell C. The polar liquid 16 is non-miscible with the non-polar liquid 17. The polar liquid 16 is disposed on the hydrophobic surface in the cell C. The non-polar liquid 17 contains a colored material. The polar liquid 16 contains non-ionic molecules. The non-ionic molecule has a polar portion and a non-polar portion.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 7, 2016
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Shigeki NOMURA, 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
  • Patent number: 8896928
    Abstract: Provided is an electrowetting device capable of performing bright and high-contrast color display. In addition, provided is an electrowetting device capable of performing high-quality display without unevenness. The electrowetting device is an electrowetting display in which each of a pair of substrate constituting one cell has a driving unit. A first substrate that stores a first hydrophobic liquid material in regions surrounded by a first pixel wall, and a second substrate that stores a second hydrophobic liquid material in regions surrounded by a second pixel wall are adhered to each other through a hydrophilic material.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: November 25, 2014
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Akira Nakasuga, Takao Unate, Takeshi Wakiya, Shigeki Nomura
  • Publication number: 20130222880
    Abstract: Provided is an electrowetting device capable of performing bright and high-contrast color display. In addition, provided is an electrowetting device capable of performing high-quality display without unevenness. The electrowetting device is an electrowetting display in which each of a pair of substrate constituting one cell has a driving unit. A first substrate that stores a first hydrophobic liquid material in regions surrounded by a first pixel wall, and a second substrate that stores a second hydrophobic liquid material in regions surrounded by a second pixel wall are adhered to each other through a hydrophilic material.
    Type: Application
    Filed: September 22, 2011
    Publication date: August 29, 2013
    Applicant: SEKISUI CHEMICAL CO., LTD.
    Inventors: Akira Nakasuga, Takao Unate, Takeshi Wakiya, Shigeki Nomura
  • Publication number: 20090104380
    Abstract: It is an object of the invention to provide a method of producing a liquid crystal display device which comprises steps of depositing droplets of a spacer particle dispersion at prescribed positions on a substrate by ejecting the spacer particle dispersion with an ink-jet apparatus, then drying the droplets, and thereby arranging the spacer particles on the substrate, which may arrange the spacer particles precisely at prescribed positions, and a spacer particle dispersion preferably usable for the method of producing a liquid crystal display device.
    Type: Application
    Filed: May 29, 2006
    Publication date: April 23, 2009
    Inventors: Michihisa Ueda, Kazushi Ito, Takeshi Wakiya, Yasuharu Nagai, Yasushi Uematsu
  • Publication number: 20090033859
    Abstract: It is the object of the present invention to provide: a liquid crystal spacer that can precisely control the interval of two substrates in producing a liquid crystal display apparatus, and can be firmly fixed to the surface of the substrate; a spacer dispersion that can precisely control the interval of two substrates in manufacturing a liquid crystal display apparatus, and can make spacer particles firmly fixed to the surface of a substrate and a spacer dispersion that can precisely dispose spacer particles at a predetermined position on a substrate, a method for producing a liquid crystal display apparatus; and a liquid crystal display apparatus. The invention is a liquid crystal spacer, which comprises a base particle and an adhesive layer provided on the surface of the base particle, the apparent center of the adhesive layer being not identical to the apparent center of the base particle.
    Type: Application
    Filed: June 21, 2006
    Publication date: February 5, 2009
    Inventors: Michihisa Ueda, Takeshi Wakiya, Tsutomu Ando, Hiroshi Yoshitani
  • Patent number: 7410698
    Abstract: A conductive particle having a low connection resistance, a small variation of conduction performance, and excellent conduction reliability and an anisotropic conductive material using such particles are disclosed. Conventional anisotropic conductive materials using conductive particles are used in the form that they are interposed between opposed boards or between opposed electrode terminals of electronic devices such as mobile telephones. However, as electronic devices have been recently developing, enhancement of the conduction reliability of the conductive particles used for the anisotropic conductive materials have been required. The surface (2) of the base particle of a conductive particle (1) of the invention used for an anisotropic conductive material is covered with a conductive film or films (4, 5). The conductive particle (1) has projections (5b) projecting from the conductive film or films.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: August 12, 2008
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Hiroya Ishida, Takeshi Wakiya, Shinya Uenoyama