Patents by Inventor Takashi Kamakura

Takashi Kamakura 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: 9877871
    Abstract: Wound bed preparation in a skin wound area can be carried out by using a hydrogel sheet, wherein the hydrogel sheet is prepared by spreading a hydrogel containing a water-soluble polymer, glycerin, and water on a two-layered laminated film consisting of a polyurethane film and a hydrophobic fiber and the moisture permeability of the hydrogel sheet is 200-2000 (g/m2/24 h).
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: January 30, 2018
    Assignee: TEIKOKU SEIYAKU CO., LTD.
    Inventors: Yukiko Inamoto, Takashi Kamakura, Makoto Takahashi, Takehiko Ohura
  • Patent number: 9205060
    Abstract: Provided is a transdermal absorption-type patch containing a serotonin receptor antagonist, which has a short transdermal absorption delay time (lag time), and in which the maximum transdermal permeation rate of the drug can be reached within a short time and the drug can disappear from circulating blood rapidly. That is, provided is a patch containing a serotonin receptor antagonist, wherein the patch contains an adhesive layer comprising a non-functional acrylic adhesive, a water-soluble organic amine, a fatty acid ester, and a serotonin receptor antagonist such as granisetron as an active ingredient.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: December 8, 2015
    Assignee: Teikoku Seiyaku Co., Ltd.
    Inventors: Takashi Kamakura, Daiki Takano
  • Patent number: 9168235
    Abstract: An aqueous patch containing diclofenac sodium, wherein the patch contains a homogeneous mixed solution of diclofenac sodium, wherein the solution is obtained by mixing crotamiton, diclofenac sodium and water in the mixture ratio of crotamiton/diclofenac sodium of 8.0 or less and the mixture ratio of (water+crotamiton)/diclofenac sodium of 3.0-20.0.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: October 27, 2015
    Assignee: Teikoku Seiyaku Co., Ltd.
    Inventors: Takashi Kamakura, Kazuha Tani, Yuichiro Mabuchi, Kazuhito Okada
  • Patent number: 9120956
    Abstract: Provided is a water-based plaster in which the gel strength is maintained to an appropriate level in a step of producing the water-based plaster, and particularly in a spreading step and an aging step, and a final preparation can exhibit an optimal adhesiveness for adhering to the skin. In the water-based plaster, a water-based adhesive base containing a water-soluble polymer as a main ingredient contains a higher fatty acid which is a liquid at room temperature and a viscosity of 1,000 (mPa·s, 20° C.) or more as a crosslinking modifier. The higher fatty acid is isostearic acid, and the contained amount thereof is 1 to 10% by weight.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: September 1, 2015
    Assignee: Teikoku Seiyaku Co., Ltd.
    Inventors: Kazuha Tani, Takashi Kamakura
  • Publication number: 20140179734
    Abstract: Provided is a transdermal absorption-type patch containing a serotonin receptor antagonist, which has a short transdermal absorption delay time (lag time), and in which the maximum transdermal permeation rate of the drug can be reached within a short time and the drug can disappear from circulating blood rapidly. That is, provided is a patch containing a serotonin receptor antagonist, wherein the patch contains an adhesive layer comprising a non-functional acrylic adhesive, a water-soluble organic amine, a fatty acid ester, and a serotonin receptor antagonist such as granisetron as an active ingredient.
    Type: Application
    Filed: July 4, 2012
    Publication date: June 26, 2014
    Inventors: Takashi Kamakura, Daiki Takano
  • Publication number: 20140171555
    Abstract: Provided is a water-based plaster in which the gel strength is maintained to an appropriate level in a step of producing the water-based plaster, and particularly in a spreading step and an aging step, and a final preparation can exhibit an optimal adhesiveness for adhering to the skin. In the water-based plaster, a water-based adhesive base containing a water-soluble polymer as a main ingredient contains a higher fatty acid which is a liquid at room temperature and a viscosity of 1,000 (mPa·s, 20° C.) or more as a crosslinking modifier. The higher fatty acid is isostearic acid, and the contained amount thereof is 1 to 10% by weight.
    Type: Application
    Filed: July 18, 2012
    Publication date: June 19, 2014
    Applicant: Teikoku Seiyaku Co., Ltd.
    Inventors: Kazuha Tani, Takashi Kamakura
  • Patent number: 8657798
    Abstract: An external patch containing diclofenac hydroxyethylpyrrolidine prepared by laminating an adhesive layer on a backing, wherein said adhesive layer is characterized by comprising 5-50% by weight of styrene•isoprene•styrene block copolymer, 20-50% by weight of a tackifier resin, 5-70% by weight of a softening agent, and 0.5-20% by weight of one or more solubilizers selected from N-methyl-2-pyrrolidone, propylene glycol and dimethyl sulfoxide as essential ingredients, and 0.5-20% by weight of diclofenac hydroxyethylpyrrolidine as an active ingredient. The patch has excellent transdermal absorption, less skin-irritation and excellent stability of the drug.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: February 25, 2014
    Assignees: Teikoku Seiyaku Co., Ltd., IBSA Institut Biochimique SA
    Inventors: Taiki Shibata, Yuichiro Mabuchi, Kenichi Hattori, Takashi Kamakura
  • Patent number: 8563799
    Abstract: A wound-covering hydrogel material which has excellent stretchability and absorbs exudates from wounds. It can maintain over long a wet environment which is suitable for accelerating the healing of wounds. There is no fear of causing pain or damaging the regenerated skin when the wound-covering hydrogel material is replaced with a fresh one. The wound-covering hydrogel material prepared by spreading a hydrogel comprising a water-soluble semi-synthetic polymer, glycerol and water, on a laminated two-layer film composed of a polyurethane film and hydrophobic fibers. The covering material has a moisture permeability as measured by the cup method in accordance with JIS Z0208 of 500-2,000 (g/m2/24 h).
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: October 22, 2013
    Assignee: Teikoku Seiyaku Co., Ltd.
    Inventors: Takashi Kamakura, Aki Sato, Makoto Takahashi, Takehiko Ohura
  • Publication number: 20130211309
    Abstract: Wound bed preparation in a skin wound area can be carried out by using a hydrogel sheet, wherein the hydrogel sheet is prepared by spreading a hydrogel containing a water-soluble polymer, glycerin, and water on a two-layered laminated film consisting of a polyurethane film and a hydrophobic fiber and the moisture permeability of the hydrogel sheet is 200-2000 (g/m2/24 h).
    Type: Application
    Filed: September 8, 2011
    Publication date: August 15, 2013
    Inventors: Yukiko Inamoto, Takashi Kamakura, Makoto Takahashi, Takehiko Ohura
  • Patent number: 8438940
    Abstract: An apparatus and a method for simulatively measuring an environment in a microspace between human skin and a wound dressing. The simulative environment-measuring apparatus includes a constant temperature-and-humidity chamber (14); a heat exchanger (12) disposed in the chamber; a constant temperature water bath (10) and a pump (11) for supplying warm water to the heat exchanger; and a container (1) set on the heat exchanger. The container holds a water retentive member (2) therein, and is covered with a water vapor diffusion-controlling member (4). A microspace (6) formed between the water vapor diffusion-controlling member and a wound dressing (5) is a simulatively reproduced space between human skin and the wound dressing. A thin temperature-and-humidity sensor (7) is set in the microspace to measure temperature and humidity. When plural containers are used, the environments of plural wound dressings can be measured at once.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: May 14, 2013
    Assignee: Teikoku Seiyaku Co., Ltd.
    Inventors: Makoto Takahashi, Takehiko Ohura, Yukiko Inamoto, Takashi Kamakura, Shigeyuki Inamoto
  • Patent number: 8377476
    Abstract: Disclosed is a water-based adhesive skin patch which has excellent storage stability, can achieve excellent accumulation of butenafine hydrochloride contained therein on a patched area such as the skin and a nail, and has a high therapeutic effect. Specifically disclosed is a water-based adhesive skin patch containing butenafine hydrochloride, which is characterized by containing butenafine hydrochloride, glycol salicylate and propylene glycol in a water-containing gel ointment. Specifically, butenafine hydrochloride is dissolved in a mixed solution of glycol salicylate and propylene glycol, and the resulting solution is dispersed in a water-containing gel. Particularly, the mixing ratio of glycol salicylate to propylene glycol is 1:2 to 1:30.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: February 19, 2013
    Assignee: Teikoku Seiyaku Co., Ltd.
    Inventors: Takashi Kamakura, Takefumi Hoshikawa, Yukiko Inamoto, Kayo Tanigawa
  • Publication number: 20120283671
    Abstract: An external patch containing diclofenac hydroxyethylpyrrolidine prepared by laminating an adhesive layer on a backing, wherein said adhesive layer is characterized by comprising 5-50% by weight of styrene•isoprene•styrene block copolymer, 20-50% by weight of a tackifier resin, 5-70% by weight of a softening agent, and 0.5-20% by weight of one or more solubilizers selected from N-methyl-2-pyrrolidone, propylene glycol and dimethyl sulfoxide as essential ingredients, and 0.5-20% by weight of diclofenac hydroxyethylpyrrolidine as an active ingredient. The patch has excellent transdermal absorption, less skin-irritation and excellent stability of the drug.
    Type: Application
    Filed: January 5, 2011
    Publication date: November 8, 2012
    Inventors: Taiki Shibata, Yuichiro Mabuchi, Kenichi Hattori, Takashi Kamakura
  • Publication number: 20120207814
    Abstract: An aqueous patch containing diclofenac sodium, wherein the patch contains a homogeneous mixed solution of diclofenac sodium, wherein the solution is obtained by mixing crotamiton, diclofenac sodium and water in the mixture ratio of crotamiton/diclofenac sodium of 8.0 or less and the mixture ratio of (water+crotamiton)/diclofenac sodium of 3.0-20.0.
    Type: Application
    Filed: October 19, 2010
    Publication date: August 16, 2012
    Inventors: Takashi Kamakura, Kazuha Tani, Yuichiro Mabuchi, Kazuhito Okada
  • Publication number: 20110097407
    Abstract: Disclosed is a water-based adhesive skin patch which has excellent storage stability, can achieve excellent accumulation of butenafine hydrochloride contained therein on a patched area such as the skin and a nail, and has a high therapeutic effect. Specifically disclosed is a water-based adhesive skin patch containing butenafine hydrochloride, which is characterized by containing butenafine hydrochloride, glycol salicylate and propylene glycol in a water-containing gel ointment. Specifically, butenafine hydrochloride is dissolved in a mixed solution of glycol salicylate and propylene glycol, and the resulting solution is dispersed in a water-containing gel. Particularly, the mixing ratio of glycol salicylate to propylene glycol is 1:2 to 1:30.
    Type: Application
    Filed: March 24, 2009
    Publication date: April 28, 2011
    Applicant: TEIKOKU SEIYAKU CO., LTD.
    Inventors: Takashi Kamakura, Takefumi Hoshikawa, Yukiko Inamoto, Kayo Tanigawa
  • Publication number: 20100326217
    Abstract: There are provided an apparatus and a method for simulatively measuring an environment in a microspace between a human skin and a wound dressing. The simulative environment-measuring apparatus comprises a constant temperature-and-humidity chamber 14 for controlling an external environment; a heat exchanger 12 disposed in the chamber 14; a constant temperature water bath 10 and a pump 11 for supplying warm water to the heat exchanger; and a container 1 which is set on the heat exchanger 12 and is easily detachable therefrom. The container 1 holds a water retentive member 2 therein, and is covered at its upper opening with a water vapor diffusion-controlling member 4. A microspace 6 formed between the water vapor diffusion-controlling member 4 and a wound dressing 5 placed on the member 4 is a simulatively reproduced space between a human skin and the wound dressing 5. A thin temperature-and-humidity sensor 7 is set in this microspace 6 to measure temperature and humidity with time.
    Type: Application
    Filed: February 21, 2008
    Publication date: December 30, 2010
    Inventors: Makoto Takahashi, Takehiko Ohura, Yukiko Inamoto, Takashi Kamakura, Shigeyuki Inamoto
  • Publication number: 20100324464
    Abstract: A wound-covering hydrogel material which has excellent stretchability and absorbs exudates from wounds. It can maintain over long a wet environment which is suitable for accelerating the healing of wounds. There is no fear of causing pain or damaging the regenerated skin when the wound-covering hydrogel material is replaced with a fresh one. The wound-covering hydrogel material prepared by spreading a hydrogel comprising a water-soluble semi-synthetic polymer, glycerol and water, on a laminated two-layer film composed of a polyurethane film and hydrophobic fibers. The covering material has a moisture permeability as measured by the cup method in accordance with JIS Z0208 of 500-2,000 (g/m2/24 h).
    Type: Application
    Filed: February 25, 2008
    Publication date: December 23, 2010
    Inventors: Takashi Kamakura, Aki Sato, Makoto Takahashi, Takehiko Ohura
  • Patent number: 5527701
    Abstract: According to the present invention, it is provided blasticidin S (hereinafter referred to as BcS) deaminase, a gene coding for the BcS deaminase, a vector incorporating the BcS deaminase gene and a transformant or a transductant transformed or transduced with the vector.It is an object of the present invention to provide BcS deaminase, a BcS deaminase gene, a vector incorporating the BcS deaminase gene and a transformant containing the vector by focusing on the fact that blasticidin S is an aminonucleoside antibiotic capable of inhibiting a protein synthesis in the wide range of organisms and is generally used as an agricultural antibiotic.It is another object of the present invention to establish expression vectors of above-mentioned BcS gene and to produce useful plants having drug resistance against specific agricultural chemicals.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: June 18, 1996
    Assignee: The Institute of Physical and Chemical Research
    Inventors: Isamu Yamaguchi, Makoto Kimura, Takashi Kamakura