Patents by Inventor Junichi Takashima

Junichi Takashima 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: 20220162637
    Abstract: The present invention provides a nucleic acid which encodes an adeno-associated virus (AAV) capsid protein mutant that contains a peptide comprising an amino acid sequence selected from the group consisting of SEQ ID Nos. 15 to 62 or a peptide comprising an amino acid sequence produced by substituting, deleting, inserting and/or adding one or several amino acid residues in an amino acid sequence selected from the group consisting of SEQ ID Nos. 15 to 62; DNA comprising the nucleic acid; a cell harboring the DNA; and a method for producing the cell.
    Type: Application
    Filed: April 23, 2020
    Publication date: May 26, 2022
    Applicant: TAKARA BIO INC.
    Inventors: Toshikazu NISHIE, Fuyuko TAKASHIMA, Tatsuji ENOKI, Junichi MINENO, Yoshinori TANAKA
  • Patent number: 10955764
    Abstract: A toner which is less likely to cause toner leakage and which is less likely to cause aggregation after being left to stand under a high temperature condition. A toner for developing electrostatic images, comprising colored resin particles comprising a binder resin and a colorant, and an external additive, wherein a conditioned bulk density obtained by a powder flowability analyzing device is from 0.525 g/mL to 0.565 g/mL.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: March 23, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kojiro Akazaki, Junichi Takashima
  • Patent number: 10386739
    Abstract: The present invention is to provide a toner production method configured to prevent scale formation, be resistant to pipe clogging, and realize stable and efficient toner production, even in the case of long-term continuous production. Disclosed is a toner production method comprising: a dispersing step for obtaining a colorant dispersion by, in a stirring tank, (a) dispersing or dissolving a colorant and a charge control agent in a polymerizable monomer, or (b) dispersing or dissolving a binder resin, a colorant and a charge control agent in an organic solvent, and a droplets forming step by suspending the colorant dispersion in an aqueous dispersion medium, wherein, in the dispersing step, the binder resin, colorant or charge control agent is added to the polymerizable monomer or organic solvent in the stirring tank, from a hopper, through a pipe heated by a heating device.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: August 20, 2019
    Assignee: ZEON CORPORATION
    Inventors: Ryo Tsumura, Junichi Takashima, Fuminari Oyama
  • Publication number: 20190227450
    Abstract: A toner which is less likely to cause toner leakage and which is less likely to cause aggregation after being left to stand under a high temperature condition. A toner for developing electrostatic images, comprising colored resin particles comprising a binder resin and a colorant, and an external additive, wherein a conditioned bulk density obtained by a powder flowability analyzing device is from 0.525 g/mL to 0.565 g/mL.
    Type: Application
    Filed: September 20, 2017
    Publication date: July 25, 2019
    Applicant: ZEON CORPORATION
    Inventors: Kojiro Akazaki, Junichi Takashima
  • Publication number: 20180292764
    Abstract: The present invention is to provide a toner production method configured to prevent scale formation, be resistant to pipe clogging, and realize stable and efficient toner production, even in the case of long-term continuous production. Disclosed is a toner production method comprising: a dispersing step for obtaining a colorant dispersion by, in a stirring tank, (a) dispersing or dissolving a colorant and a charge control agent in a polymerizable monomer, or (b) dispersing or dissolving a binder resin, a colorant and a charge control agent in an organic solvent, and a droplets forming step by suspending the colorant dispersion in an aqueous dispersion medium, wherein, in the dispersing step, the binder resin, colorant or charge control agent is added to the polymerizable monomer or organic solvent in the stirring tank, from a hopper, through a pipe heated by a heating device.
    Type: Application
    Filed: April 4, 2018
    Publication date: October 11, 2018
    Applicant: ZEON CORPORATION
    Inventors: Ryo Tsumura, Junichi Takashima, Fuminari Oyama
  • Patent number: 7709176
    Abstract: A method for producing a polymerized toner comprising a step of polymerizing a polymerizable monomer composition in an aqueous dispersion medium in the presence of a polymerization initiator to obtain a dispersion liquid of colored polymer particles and a stripping step of injecting a gas comprised of air or an inert gas into the dispersion liquid of the colored polymer particles while stirring the dispersion liquid in an evaporator and the flow rate of the gas injected per weight of the colored polymer particles being 0.05 to 4 L/(hr·kg), the pressure of the vapor phase of the evaporator being 5 to 80 kPa.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: May 4, 2010
    Assignee: Zeon Corporation
    Inventors: Junichi Takashima, Takashi Iga, Keita Sensui
  • Publication number: 20070218397
    Abstract: A production process of a polymerized toner, in which a corrosion-resistant metal container, the surface roughness Ry of an inner wall of which is at most 3 ?m, is used as a polymerization container, and when an aqueous liquid dispersion is heated in the polymerization container to conduct polymerization, the temperature of the aqueous liquid dispersion is raised up to a temperature 5° C. lower than a target polymerization temperature at a heating rate of 20 to 60° C./hr and raised up to the target polymerization temperature from the temperature 5° C. lower than the target polymerization temperature at a heating rate of 5 to 30° C./hr, and after the temperature of the aqueous liquid dispersion reaches the target polymerization temperature, the polymerization is conducted while controlling the temperature of the aqueous liquid dispersion so as to fall within a range of (the target polymerization temperature ±3° C.).
    Type: Application
    Filed: March 30, 2005
    Publication date: September 20, 2007
    Applicant: ZEON CORPORATION
    Inventors: Junichi Takashima, Kazuhiro Sato, Yoshihiro Makuta
  • Publication number: 20070048645
    Abstract: A method for producing a polymerized toner comprising a step of polymerizing a polymerizable monomer composition in an aqueous dispersion medium in the presence of a polymerization initiator to obtain a dispersion liquid of colored polymer particles and a stripping step of injecting a gas comprised of air or an inert gas into the dispersion liquid of the colored polymer particles while stirring the dispersion liquid in an evaporator and the flow rate of the gas injected per weight of the colored polymer particles being 0.05 to 4 L/(hr·kg), the pressure of the vapor phase of the evaporator being 5 to 80 kPa.
    Type: Application
    Filed: August 29, 2006
    Publication date: March 1, 2007
    Applicant: ZEON CORPORATION
    Inventors: Junichi Takashima, Takashi Iga, Keita Sensui