Patents by Inventor Kazutoshi Mihara

Kazutoshi Mihara 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: 10604779
    Abstract: Disclosed is a highly efficient method for production of highly pure mutant-type human erythropoietin. The method is for production of mutant-type human erythropoietin, in which a transformed mammalian cell is allowed to produce the mutant-type human erythropoietin, and the supernatant of the culture is subjected to hydrophobic column chromatography, multimodal anion exchange column chromatography, anion exchange column chromatography, phosphate group affinity column chromatography, and gel filtration column chromatography, in this order.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: March 31, 2020
    Assignee: JCR PHARMACEUTICALS CO., LTD.
    Inventors: Shinji Kakimoto, Miroslav Matev, Tsuyoshi Fukui, Yukichi Hatano, Junya Tani, Kazutoshi Mihara, Kenichi Takahashi, Atsushi Sugimura
  • Patent number: 10385325
    Abstract: Disclosed is a method for production of recombinant human alpha-galactosidase A (rh alpha-Gal A) in a large scale, with a high purity. The method comprises the steps of (a) culturing rh alpha-Gal A-producing mammalian cells in a serum-free medium, (b) collecting culture supernatant, (c) subjecting the culture supernatant to anion-exchange column chromatography, (d) to hydrophobic column chromatography, (e) to a column chromatography employing as solid phase a material having affinity for phosphate group, (f) to cation-exchange column chromatography, (g) to dye-affinity column chromatography, and (h) to gel filtration column chromatography, in the order.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 20, 2019
    Assignee: JCR PHARMACEUTICALS CO., LTD.
    Inventors: Tsuyoshi Fukui, Atsuko Kawasaki, Yukichi Hatano, Yae Ito, Kazutoshi Mihara, Atsushi Sugimura
  • Publication number: 20190078129
    Abstract: Disclosed is a highly efficient method for production of highly pure mutant-type human erythropoietin. The method is for production of mutant-type human erythropoietin, in which a transformed mammalian cell is allowed to produce the mutant-type human erythropoietin, and the supernatant of the culture is subjected to hydrophobic column chromatography, multimodal anion exchange column chromatography, anion exchange column chromatography, phosphate group affinity column chromatography, and gel filtration column chromatography, in this order.
    Type: Application
    Filed: March 7, 2017
    Publication date: March 14, 2019
    Inventors: Shinji KAKIMOTO, Miroslav MATEV, Tsuyoshi FUKUI, Yukichi HATANO, Junya TANI, Kazutoshi MIHARA, Kenichi TAKAHASHI, Atsushi SUGIMURA
  • Publication number: 20180016564
    Abstract: Disclosed is a method for production of recombinant human alpha-galactosidase A (rh alpha-Gal A) in a large scale, with a high purity. The method comprises the steps of (a) culturing rh alpha-Gal A-producing mammalian cells in a serum-free medium, (b) collecting culture supernatant, (c) subjecting the culture supernatant to anion-exchange column chromatography, (d) to hydrophobic column chromatography, (e) to a column chromatography employing as solid phase a material having affinity for phosphate group, (f) to cation-exchange column chromatography, (g) to dye-affinity column chromatography, and (h) to gel filtration column chromatography, in the order.
    Type: Application
    Filed: January 21, 2016
    Publication date: January 18, 2018
    Inventors: Tsuyoshi FUKUI, Atsuko KAWASAKI, Yukichi HATANO, Yae ITO, Kazutoshi MIHARA, Atsushi SUGIMURA
  • Patent number: 9617529
    Abstract: Disclosed is a method for production of recombinant human alpha-galactosidase A (rh alpha-Gal A) in a large scale, with a high purity. The method comprises the steps of (a) culturing rh alpha-Gal A-producing mammalian cells in a serum-free medium, (b) collecting culture supernatant, (c) subjecting the culture supernatant to anion-exchange column chromatography, (d) to hydrophobic column chromatography, (e) to a column chromatography employing as solid phase a material having affinity for phosphate group, (f) to cation-exchange column chromatography, and (g) to gel filtration column chromatography, in the order.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 11, 2017
    Assignee: JCR PHARMACEUTICALS CO., LTD.
    Inventors: Masahiro Asano, Toshihiro Yagi, Tsuyoshi Fukui, Atsuko Kawasaki, Yukichi Hatano, Kazutoshi Mihara, Atsushi Sugimura
  • Patent number: 9279109
    Abstract: Disclosed is a method for production of recombinant human iduronate 2-sulfatase (rhI2S) (the 26th to 550th amino acids of SEQ ID NO: 10) in a large scale, with a high purity, and mannose 6-phosphate residues. The method comprises the steps of (a) culturing rhI2S (the 26th to 550th amino acids of SEQ ID NO: 10)-producing mammalian cells in a serum-free medium, (b) collecting culture supernatant, (c) subjecting the culture supernatant to cation-exchange column chromatography, (d) to dye affinity column chromatography, (e) to anion-exchange column chromatography, and (f) to a column chromatography employing as solid phase a material having affinity for phosphate group, and (g) to gel filtration column chromatography, in the order.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: March 8, 2016
    Assignee: JCR Pharmaceuticals Co., Ltd.
    Inventors: Kazutoshi Mihara, Atsuko Kawasaki, Kouta Ootsuki, Yuukichi Hatano, Shoichiro Kamei, Atsushi Sugimura
  • Publication number: 20150210992
    Abstract: Disclosed is a method for production of recombinant human alpha-galactosidase A (rh alpha-Gal A) in a large scale, with a high purity. The method comprises the steps of (a) culturing rh alpha-Gal A-producing mammalian cells in a serum-free medium, (b) collecting culture supernatant, (c) subjecting the culture supernatant to anion-exchange column chromatography, (d) to hydrophobic column chromatography, (e) to a column chromatography employing as solid phase a material having affinity for phosphate group, (f) to cation-exchange column chromatography, and (g) to gel filtration column chromatography, in the order.
    Type: Application
    Filed: July 24, 2013
    Publication date: July 30, 2015
    Inventors: Masahiro Asano, Toshihiro Yagi, Tsuyoshi Fukui, Atsuko Kawasaki, Yukichi Hatano, Kazutoshi Mihara, Atsushi Sugimura
  • Publication number: 20130330802
    Abstract: Disclosed is a method for production of recombinant human iduronate 2-sulfatase (rhI2S) in a large scale, with a high purity, and mannose 6-phosphate residues. The method comprises the steps of (a) culturing rhI2S-producing mammalian cells in a serum-free medium, (b) collecting culture supernatant, (c) subjecting the culture supernatant to cation-exchange column chromatography, (d) to dye affinity column chromatography, (e) to anion-exchange column chromatography, and (f) to a column chromatography employing as solid phase a material having affinity for phosphate group, and (g) to gel filtration column chromatography, in the order.
    Type: Application
    Filed: January 23, 2012
    Publication date: December 12, 2013
    Applicant: JCR PHARMACEUTICALS CO., LTD.
    Inventors: Kazutoshi Mihara, Atsuko Kawasaki, Kouta Ootsuki, Yuukichi Hatano, Shoichiro Kamei, Atsushi Sugimura
  • Patent number: 7939296
    Abstract: Disclosed is a method for production of recombinant human FSH in high yield and a high purity. The method comprises the steps of: (a) culturing recombinant human FSH-producing mammalian cells in a serum-free medium, (b) collecting culture supernatant, (c) subjecting the culture supernatant to cation-exchange column chromatography, (d) dye affinity column chromatography, (e) hydrophobic column chromatography, and (f) gel filtration column chromatography to collect recombinant human FSH-active fractions, in the order.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: May 10, 2011
    Assignee: JCR Pharmaceuticals Co., Ltd.
    Inventors: Atsushi Sugimura, Katsuya Daimon, Kazutoshi Mihara, Yae Ito
  • Publication number: 20090291473
    Abstract: Disclosed is a method for production of recombinant human FSH in high yield and a high purity. The method comprises the steps of: (a) culturing recombinant human FSH-producing mammalian cells in a serum-free medium, (b) collecting culture supernatant, (c) subjecting the culture supernatant to cation-exchange column chromatography, (d) dye affinity column chromatography, (e) hydrophobic column chromatography, and (f) gel filtration column chromatography to collect recombinant human FSH-active fractions, in the order.
    Type: Application
    Filed: May 15, 2009
    Publication date: November 26, 2009
    Applicant: JCR PHARMACEUTICALS CO., LTD.
    Inventors: Atsushi Sugimura, Katsuya Daimon, Kazutoshi Mihara, Yae Ito