Patents by Inventor Minoru HATSUSHIKA

Minoru HATSUSHIKA 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).

  • Aggregation Inhibitory Agent and Medical Composition and Medical Device Including Same
    Publication number: 20230041642
    Abstract: An anti-aggregation agent of the present invention contains, as an anti-aggregation ingredient, at least one selected from the group consisting of polyoxyethylene cetyl ether, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene polyoxypropylene glycols having an average molecular weight of 3000 to 13000 and combinations thereof. According to the present invention, in a container whose inner wall is treated with silicone oil, aggregation of a poorly water-soluble drug caused by the silicone oil can be prevented.
    Type: Application
    Filed: November 19, 2020
    Publication date: February 9, 2023
    Inventors: Mizuno Fujita, Miyuki Moritani, Shinkichi Sato, Minoru Hatsushika
  • RISPERIDONE-CONTAINING MICROCAPSULE, METHOD FOR PREPARING SAME AND RELEASE CONTROL METHOD
    Publication number: 20200281863
    Abstract: A microcapsule contains a biodegradable polymer and risperidone and has a sustained release property. The biodegradable polymer contained in the microcapsule has a molecular weight corresponding to 85% or more of an initial molecular weight (Mw) of the biodegradable polymer. A method of producing the microcapsule is also disclosed. The method of producing a microcapsule has (A) a step of preparing a first phase by mixing a solution of a biodegradable polymer and a solution of risperidone which are prepared separately, (B) a step of, immediately after the preparation of the first phase, mixing the first phase with a second phase being an aqueous phase to prepare an emulsion, and (C) a step of subjecting the resulting emulsion to in-water drying.
    Type: Application
    Filed: May 22, 2020
    Publication date: September 10, 2020
    Applicant: NIPRO CORPORATION
    Inventors: Naoya KOSAKA, Naoyuki MIYANAGA, Minoru HATSUSHIKA
  • RISPERIDONE-CONTAINING MICROCAPSULE, METHOD FOR PREPARING SAME AND RELEASE CONTROL METHOD
    Publication number: 20190029969
    Abstract: A microcapsule contains a biodegradable polymer and risperidone and has a sustained release property. The biodegradable polymer contained in the microcapsule has a molecular weight corresponding to 85% or more of an initial molecular weight (Mw) of the biodegradable polymer. A method of producing the microcapsule is also disclosed. The method of producing a microcapsule has (A) a step of preparing a first phase by mixing a solution of a biodegradable polymer and a solution of risperidone which are prepared separately, (B) a step of, immediately after the preparation of the first phase, mixing the first phase with a second phase being an aqueous phase to prepare an emulsion, and (C) a step of subjecting the resulting emulsion to in-water drying.
    Type: Application
    Filed: September 6, 2016
    Publication date: January 31, 2019
    Applicant: NIPRO CORPORATION
    Inventors: Naoya KOSAKA, Naoyuki MIYANAGA, Minoru HATSUSHIKA