Patents by Inventor Maasa YAJI

Maasa YAJI 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: 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