Patents by Inventor Seiichiro Tsuru

Seiichiro Tsuru 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: 11903915
    Abstract: The present invention provides a gel patch having a paste layer on a support, wherein the paste layer comprising ketoprofen or a pharmaceutically acceptable salt thereof, propylene glycol, 1-menthol, and water, wherein the mass of propylene glycol in the paste layer is 3-fold the mass of ketoprofen or less, and wherein the content of 1-menthol based on a total mass of the paste layer is 0.1 to 0.5 mass %.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: February 20, 2024
    Assignee: HISAMITSU PHARMACEUTICAL CO., INC.
    Inventors: Tatsuya Sakakura, Satoshi Kimura, Seiichiro Tsuru
  • Publication number: 20220105060
    Abstract: The present invention provides a gel patch having a paste layer on a support, wherein the paste layer comprising ketoprofen or a pharmaceutically acceptable salt thereof, propylene glycol, 1-menthol, and water, wherein the mass of propylene glycol in the paste layer is 3-fold the mass of ketoprofen or less, and wherein the content of 1-menthol based on a total mass of the paste layer is 0.1 to 0.5 mass %.
    Type: Application
    Filed: February 13, 2020
    Publication date: April 7, 2022
    Inventors: Tatsuya SAKAKURA, Satoshi KIMURA, Seiichiro TSURU
  • Publication number: 20210154152
    Abstract: A method for producing a gel patch comprising an adhesive mass layer on a backing fabric, comprising a step of applying a composition comprising a physiologically active substance, a water-soluble polymer, glycerin, and water to the backing fabric to form the adhesive mass layer, wherein a loss tangent of the composition in dynamic viscoelasticity measurement at 1 Hz at a time of application to the backing fabric is 0.75 to 1.
    Type: Application
    Filed: February 4, 2021
    Publication date: May 27, 2021
    Inventors: Seiichiro TSURU, Masayoshi MAKI
  • Patent number: 10940121
    Abstract: A method for producing a gel patch comprising an adhesive mass layer on a backing fabric, comprising a step of applying a composition comprising a physiologically active substance, a water-soluble polymer, glycerin, and water to the backing fabric to form the adhesive mass layer, wherein a loss tangent of the composition in dynamic viscoelasticity measurement at 1 Hz at a time of application to the backing fabric is 0.75 to 1.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: March 9, 2021
    Assignee: HISAMITSU PHARMACEUTICAL CO., INC.
    Inventors: Seiichiro Tsuru, Masayoshi Maki
  • Patent number: 10369115
    Abstract: A gel patch comprising a plaster layer on a support, the plaster layer comprising a mixture of at least a neutralized polyacrylic acid, a poly(methyl acrylate/2-ethylhexyl acrylate) emulsion, and water, wherein the poly(methyl acrylate/2-ethylhexyl acrylate) emulsion is an emulsion having an evaporation residue of 57 to 61% by heating at or above the boiling point of the medium and is present in an amount of at least 2.5 times and preferably at least 3 times the mass of the neutralized polyacrylic acid.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: August 6, 2019
    Assignee: HISAMITSU PHARMACEUTICAL CO., LTD.
    Inventors: Keiichiro Tsurushima, Yasuhisa Kose, Shinji Yamasoto, Seiichiro Tsuru, Takaaki Yoshinaga
  • Publication number: 20180036255
    Abstract: A method for producing a gel patch comprising an adhesive mass layer on a backing fabric, comprising a step of applying a composition comprising a physiologically active substance, a water-soluble polymer, glycerin, and water to the backing fabric to form the adhesive mass layer, wherein a loss tangent of the composition in dynamic viscoelasticity measurement at 1 Hz at a time of application to the backing fabric is 0.75 to 1.
    Type: Application
    Filed: February 17, 2016
    Publication date: February 8, 2018
    Inventors: Seiichiro TSURU, Masayoshi MAKI
  • Patent number: 9707194
    Abstract: The invention provides a gel patch comprising a support and an adhesive layer on the support, wherein the adhesive layer comprises 1.5 to 2.5 mass % of ketoprofen, 1.5 to 2.5 mass % of 4-tert-butyl-4?-methoxydibenzoylmethane and 12 to 18 mass % of propylene glycol, based on the total mass of the adhesive layer.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: July 18, 2017
    Assignee: HISAMITSU PHARMACEUTICAL CO., INC.
    Inventors: Seiichiro Tsuru, Masayoshi Maki, Shinji Yamasoto, Takaaki Terahara
  • Publication number: 20160361281
    Abstract: The invention provides a gel patch comprising a support and an adhesive layer on the support, wherein the adhesive layer comprises 1.5 to 2.5 mass % of ketoprofen, 1.5 to 2.5 mass % of 4-tert-butyl-4?-methoxydibenzoylmethane and 12 to 18 mass % of propylene glycol, based on the total mass of the adhesive layer.
    Type: Application
    Filed: February 26, 2015
    Publication date: December 15, 2016
    Inventors: Seiichiro TSURU, Masayoshi MAKI, Shinji YAMASOTO, Takaaki TERAHARA
  • Publication number: 20160206569
    Abstract: A gel patch comprising a plaster layer on a support, the plaster layer comprising a mixture of at least a neutralized polyacrylic acid, a poly(methyl acrylate/2-ethylhexyl acrylate) emulsion, and water, wherein the poly(methyl acrylate/2-ethylhexyl acrylate) emulsion is an emulsion having an evaporation residue of 57 to 61% by heating at or above the boiling point of the medium and is present in an amount of at least 2.5 times and preferably at least 3 times the mass of the neutralized polyacrylic acid.
    Type: Application
    Filed: August 21, 2014
    Publication date: July 21, 2016
    Inventors: Keiichiro TSURUSHIMA, Yasuhisa KOSE, Seiichiro TSURU, Shinji YAMASOTO, Takaaki YOSHINAGA
  • Patent number: 8920831
    Abstract: A lidocaine-containing hydrogel patch comprising: a support layer; and a adhesive layer stacked on a surface of the support layer, wherein the adhesive layer comprises at least one selected from the group consisting of lidocaine and pharmaceutically acceptable salts thereof, a total content of the lidocaine and the pharmaceutically acceptable salts thereof is 3 to 8% by mass relative to an entire mass of the adhesive layer, the adhesive layer further comprises oleic acid in an amount of 0.3 to 1% by mass relative to the entire mass of the adhesive layer, and a pH of the adhesive layer is 6.8 to 7.4.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: December 30, 2014
    Assignee: Hisamitsu Pharmaceutical Co., Inc.
    Inventors: Junichi Kubo, Seiichiro Tsuru, Keiichiro Tsurushima, Shinji Yamasoto
  • Publication number: 20140141056
    Abstract: A lidocaine-containing hydrogel patch comprising: a support layer; and a adhesive layer stacked on a surface of the support layer, wherein the adhesive layer comprises at least one selected from the group consisting of lidocaine and pharmaceutically acceptable salts thereof, a total content of the lidocaine and the pharmaceutically acceptable salts thereof is 3 to 8% by mass relative to an entire mass of the adhesive layer, the adhesive layer further comprises oleic acid in an amount of 0.3 to 1% by mass relative to the entire mass of the adhesive layer, and a pH of the adhesive layer is 6.8 to 7.4.
    Type: Application
    Filed: June 13, 2012
    Publication date: May 22, 2014
    Applicant: Hisamitsu Pharmaceutical Co., Inc.
    Inventors: Junichi Kubo, Seiichiro Tsuru, Keiichiro Tsurushima, Shinji Yamasoto
  • Patent number: 7998590
    Abstract: An adhesive article comprising a backing and an adhesive layer disposed on at least one side of the backing, wherein the adhesive layer is formed from an adhesive base that contains substantially no gelatin and does contain readily soluble agar.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: August 16, 2011
    Assignee: Hisamitsu Pharmaceutical Co., Inc.
    Inventors: Seiichiro Tsuru, Tomoyuki Hinotani, Tetsurou Hinotani, legal representative, Akiko Hinotani, legal representative, Masatoshi Kita
  • Publication number: 20100217170
    Abstract: A plaster including a pressure-sensitive adhesive layer containing a readily dissolvable agar and at least one additive selected from the group consisting of polyacrylamides, polyvinyl alcohols, polyvinyl pyrrolidones, sodium alginate, ammonium alginate, carboxymethylcelluloses, sodium carboxymethylcelluloses, methylcelluloses, gum arabics, tragacanth gums, and xanthene rubbers, is provided.
    Type: Application
    Filed: September 14, 2006
    Publication date: August 26, 2010
    Inventors: Seiichiro Tsuru, Tomoyuki Hinotani
  • Publication number: 20070231591
    Abstract: An adhesive article comprising a backing and an adhesive layer disposed on at least one side of the backing, wherein the adhesive layer is formed from an adhesive base that contains substantially no gelatin and does contain readily soluble agar.
    Type: Application
    Filed: April 27, 2005
    Publication date: October 4, 2007
    Inventors: Seiichiro Tsuru, Tomoyuki Hinotani, Tetsurou Hinotani, Masatoshi Kita
  • Patent number: 6432431
    Abstract: A steroid-containing gel patch containing a steroid as an effective ingredient at 0.005 to 0.05% by weight, crotamiton as a stabilizer at 15% by weight or less and a surfactant in a base, where the amount of the crotamiton blended being 200 to 3000-fold the weight of the steroid blended and the amount of the surfactant blended being {fraction (1/20)} to ⅕-fold the weight of the crotamiton blended.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: August 13, 2002
    Assignee: Hisamitsu Pharmaceutical Co., Inc.
    Inventors: Kazunori Muta, Seiichiro Tsuru, Taro Yamahata