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).
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Patent number: 9877871Abstract: 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: GrantFiled: September 8, 2011Date of Patent: January 30, 2018Assignee: TEIKOKU SEIYAKU CO., LTD.Inventors: Yukiko Inamoto, Takashi Kamakura, Makoto Takahashi, Takehiko Ohura
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Patent number: 9205060Abstract: 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: GrantFiled: July 4, 2012Date of Patent: December 8, 2015Assignee: Teikoku Seiyaku Co., Ltd.Inventors: Takashi Kamakura, Daiki Takano
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Patent number: 9168235Abstract: 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: GrantFiled: October 19, 2010Date of Patent: October 27, 2015Assignee: Teikoku Seiyaku Co., Ltd.Inventors: Takashi Kamakura, Kazuha Tani, Yuichiro Mabuchi, Kazuhito Okada
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Patent number: 9120956Abstract: 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: GrantFiled: July 18, 2012Date of Patent: September 1, 2015Assignee: Teikoku Seiyaku Co., Ltd.Inventors: Kazuha Tani, Takashi Kamakura
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Publication number: 20140179734Abstract: 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: ApplicationFiled: July 4, 2012Publication date: June 26, 2014Inventors: Takashi Kamakura, Daiki Takano
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Publication number: 20140171555Abstract: 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: ApplicationFiled: July 18, 2012Publication date: June 19, 2014Applicant: Teikoku Seiyaku Co., Ltd.Inventors: Kazuha Tani, Takashi Kamakura
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Patent number: 8657798Abstract: 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: GrantFiled: January 5, 2011Date of Patent: February 25, 2014Assignees: Teikoku Seiyaku Co., Ltd., IBSA Institut Biochimique SAInventors: Taiki Shibata, Yuichiro Mabuchi, Kenichi Hattori, Takashi Kamakura
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Patent number: 8563799Abstract: 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: GrantFiled: February 25, 2008Date of Patent: October 22, 2013Assignee: Teikoku Seiyaku Co., Ltd.Inventors: Takashi Kamakura, Aki Sato, Makoto Takahashi, Takehiko Ohura
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Publication number: 20130211309Abstract: 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: ApplicationFiled: September 8, 2011Publication date: August 15, 2013Inventors: Yukiko Inamoto, Takashi Kamakura, Makoto Takahashi, Takehiko Ohura
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Patent number: 8438940Abstract: 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: GrantFiled: February 21, 2008Date of Patent: May 14, 2013Assignee: Teikoku Seiyaku Co., Ltd.Inventors: Makoto Takahashi, Takehiko Ohura, Yukiko Inamoto, Takashi Kamakura, Shigeyuki Inamoto
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Patent number: 8377476Abstract: 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: GrantFiled: March 24, 2009Date of Patent: February 19, 2013Assignee: Teikoku Seiyaku Co., Ltd.Inventors: Takashi Kamakura, Takefumi Hoshikawa, Yukiko Inamoto, Kayo Tanigawa
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Publication number: 20120283671Abstract: 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: ApplicationFiled: January 5, 2011Publication date: November 8, 2012Inventors: Taiki Shibata, Yuichiro Mabuchi, Kenichi Hattori, Takashi Kamakura
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Publication number: 20120207814Abstract: 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: ApplicationFiled: October 19, 2010Publication date: August 16, 2012Inventors: Takashi Kamakura, Kazuha Tani, Yuichiro Mabuchi, Kazuhito Okada
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Publication number: 20110097407Abstract: 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: ApplicationFiled: March 24, 2009Publication date: April 28, 2011Applicant: TEIKOKU SEIYAKU CO., LTD.Inventors: Takashi Kamakura, Takefumi Hoshikawa, Yukiko Inamoto, Kayo Tanigawa
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Publication number: 20100326217Abstract: 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: ApplicationFiled: February 21, 2008Publication date: December 30, 2010Inventors: Makoto Takahashi, Takehiko Ohura, Yukiko Inamoto, Takashi Kamakura, Shigeyuki Inamoto
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Publication number: 20100324464Abstract: 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: ApplicationFiled: February 25, 2008Publication date: December 23, 2010Inventors: Takashi Kamakura, Aki Sato, Makoto Takahashi, Takehiko Ohura
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Patent number: 5527701Abstract: 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: GrantFiled: April 27, 1993Date of Patent: June 18, 1996Assignee: The Institute of Physical and Chemical ResearchInventors: Isamu Yamaguchi, Makoto Kimura, Takashi Kamakura