Patents by Inventor Yohei OKUBO

Yohei OKUBO 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: 12005143
    Abstract: Disclosed herein are a method for producing a miniaturized liposome on a large production scale, and an apparatus for producing a liposome which is to be used in the above-mentioned method. Provided is a method for producing a liposome, including a step of stirring a mixture containing an oil phase in which at least one lipid is dissolved in an organic solvent and a water phase in a first tank of an apparatus having the first tank and a circulation path, in which the ratio of the capacity of the circulation path to the total capacity of the tank and the circulation path is 0.4 or less and/or the time required for the mixture to return to the first tank after being discharged therefrom is within 2.0 minutes.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: June 11, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Susumu Sugiyama, Naoki Yamada, Shigehisa Sugiyama, Yohei Okubo
  • Patent number: 11395999
    Abstract: Disclosed herein are a method for producing a liposome which is capable of reducing the facility costs and also capable of rapid desolvation, and an apparatus for producing a liposome which is for use in the above-mentioned method. Provided is a method for producing a liposome, including a stirring step of stirring a mixed liquid containing an oil phase in which at least one lipid is dissolved in an organic solvent and a water phase, and an evaporating step of evaporating an organic solvent from the mixed liquid, in which the condensed organic solvent is removed by passing a gas having a temperature not higher than the dew point of the solvent in the evaporating step.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: July 26, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Susumu Sugiyama, Naoki Yamada, Shigehisa Sugiyama, Yohei Okubo, Takashi Sasaki, Tetsu Ishiguro
  • Patent number: 11325091
    Abstract: Disclosed herein are a method for producing a liposome which is capable of reducing the facility costs and also capable of rapid desolvation, and an apparatus for producing a liposome which is for use in the above-mentioned method. Provided is a method for producing a liposome, including a stirring step of stirring a mixed liquid containing an oil phase in which at least one lipid is dissolved in an organic solvent and a water phase, and an evaporating step of evaporating an organic solvent from the mixed liquid, in which the condensed organic solvent is removed by passing a gas having a temperature not higher than the dew point of the solvent in the evaporating step.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: May 10, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Susumu Sugiyama, Naoki Yamada, Shigehisa Sugiyama, Yohei Okubo, Takashi Sasaki, Tetsu Ishiguro
  • Patent number: 10485760
    Abstract: Disclosed herein are a method for producing a miniaturized liposome on a large production scale, and an apparatus for producing a liposome which is to be used in the above-mentioned method. Provided is a method for producing a liposome, including a step of stirring a mixture containing an oil phase in which at least one lipid is dissolved in an organic solvent and a water phase in a first tank of an apparatus having the first tank and a circulation path, in which the ratio of the capacity of the circulation path to the total capacity of the tank and the circulation path is 0.4 or less and/or the time required for the mixture to return to the first tank after being discharged therefrom is within 2.0 minutes.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: November 26, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Susumu Sugiyama, Naoki Yamada, Shigehisa Sugiyama, Yohei Okubo
  • Publication number: 20180133676
    Abstract: Disclosed herein are a method for producing a liposome which is capable of reducing the facility costs and also capable of rapid desolvation, and an apparatus for producing a liposome which is for use in the above-mentioned method. Provided is a method for producing a liposome, including a stirring step of stirring a mixed liquid containing an oil phase in which at least one lipid is dissolved in an organic solvent and a water phase, and an evaporating step of evaporating an organic solvent from the mixed liquid, in which the condensed organic solvent is removed by passing a gas having a temperature not higher than the dew point of the solvent in the evaporating step.
    Type: Application
    Filed: January 11, 2018
    Publication date: May 17, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Susumu SUGIYAMA, Naoki YAMADA, Shigehisa SUGIYAMA, Yohei OKUBO, Takashi SASAKI, Tetsu ISHIGURO
  • Publication number: 20180133156
    Abstract: Disclosed herein are a method for producing a miniaturized liposome on a large production scale, and an apparatus for producing a liposome which is to be used in the above-mentioned method. Provided is a method for producing a liposome, including a step of stirring a mixture containing an oil phase in which at least one lipid is dissolved in an organic solvent and a water phase in a first tank of an apparatus having the first tank and a circulation path, in which the ratio of the capacity of the circulation path to the total capacity of the tank and the circulation path is 0.4 or less and/or the time required for the mixture to return to the first tank after being discharged therefrom is within 2.0 minutes.
    Type: Application
    Filed: January 11, 2018
    Publication date: May 17, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Susumu SUGIYAMA, Naoki YAMADA, Shigehisa SUGIYAMA, Yohei OKUBO
  • Patent number: 9920155
    Abstract: The object of the present invention is to provide a resin particle having a protrusion that is more resistant to the detachment and having a uniform protrusion size and protrusion distribution density. The resin particle of the present invention comprises: a spherical part and a peripheral part having a plurality of convex part formed on the surface of the spherical part, wherein the spherical part and the peripheral part comprise a vinyl polymer and/or a polysiloxane component, the spherical part and the peripheral part are different in the composition, the melting point of the peripheral part is not less than 200° C., and the curvature center of the boundary between the peripheral part and the spherical part determined by a transmission electron microscope observation of the cross-section of the resin particle exists in the spherical part.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 20, 2018
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazuaki Matsumoto, Yohei Okubo, Tomonari Takata, Junko Kita, Naoki Kobayashi
  • Publication number: 20170281543
    Abstract: Disclosed herein are a method for producing a miniaturized liposome on a large production scale, and an apparatus for producing a liposome which is to be used in the above-mentioned method. Provided is a method for producing a liposome, including a step of stirring a mixture containing an oil phase in which at least one lipid is dissolved in an organic solvent and a water phase in a first tank of an apparatus having the first tank and a circulation path, in which the ratio of the capacity of the circulation path to the total capacity of the tank and the circulation path is 0.4 or less and/or the time required for the mixture to return to the first tank after being discharged therefrom is within 2.0 minutes.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 5, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Susumu SUGIYAMA, Naoki YAMADA, Shigehisa SUGIYAMA, Yohei OKUBO
  • Publication number: 20170282144
    Abstract: Disclosed herein are a method for producing a liposome which is capable of reducing the facility costs and also capable of rapid desolvation, and an apparatus for producing a liposome which is for use in the above-mentioned method. Provided is a method for producing a liposome, including a stirring step of stirring a mixed liquid containing an oil phase in which at least one lipid is dissolved in an organic solvent and a water phase, and an evaporating step of evaporating an organic solvent from the mixed liquid, in which the condensed organic solvent is removed by passing a gas having a temperature not higher than the dew point of the solvent in the evaporating step.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 5, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Susumu SUGIYAMA, Naoki YAMADA, Shigehisa SUGIYAMA, Yohei OKUBO, Takashi SASAKI, Tetsu ISHIGURO
  • Publication number: 20170096515
    Abstract: The object of the present invention is to provide a resin particle having a protrusion that is more resistant to the detachment and having a uniform protrusion size and protrusion distribution density. The resin particle of the present invention comprises: a spherical part and a peripheral part having a plurality of convex part formed on the surface of the spherical part, wherein the spherical part and the peripheral part comprise a vinyl polymer and/or a polysiloxane component, the spherical part and the peripheral part are different in the composition, the melting point of the peripheral part is not less than 200° C., and the curvature center of the boundary between the peripheral part and the spherical part determined by a transmission electron microscope observation of the cross-section of the resin particle exists in the spherical part.
    Type: Application
    Filed: March 18, 2015
    Publication date: April 6, 2017
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Kazuaki MATSUMOTO, Yohei OKUBO, Tomonari TAKATA, Junko KITA, Naoki KOBAYASHI