Patents by Inventor Daisuke Iida

Daisuke Iida 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: 9972446
    Abstract: An electrode for a power storage device includes carbon nanotubes, graphene, an ionic liquid, and a three-dimensional network metal porous body which holds the carbon nanotubes, the graphene, and the ionic liquid in pore portions, wherein a ratio of a total amount of the carbon nanotubes and the graphene to an amount of the ionic liquid is more than or equal to 10% by mass and less than or equal to 90% by mass, and a mass ratio between the carbon nanotubes and the graphene is within a range of 3:7 to 7:3.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: May 15, 2018
    Assignee: Meidensha Corporation
    Inventors: Kazuki Okuno, Masatoshi Majima, Takayuki Noguchi, Daisuke Iida, Masamichi Kuramoto, Masashi Ishikawa, Maki Hattori, Takumi Inui
  • Publication number: 20180057499
    Abstract: The compounds represented by formulas (I) to (XVIII) or pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: August 29, 2017
    Publication date: March 1, 2018
    Inventors: Richard Clark, Tetsuya Kawahara, Daisuke Iida, Shinsuke Hirota, Yasuaki Kamada, Toshiyuki Ohfusa, Naoki Yoneda, Fumiyoshi Matsuura, So Yasui
  • Publication number: 20160168176
    Abstract: A compound represented by the formula (I) or a salt thereof: wherein a ring Z is a 5 to 6-membered heteroaromatic ring having one or two heteroatoms in the ring; X1 is a hydrogen atom, a hydroxy group, a hydroxy C1-6 alkyl group, —B(OH)2, a boronate ester group, a cyclic boronate ester group, a boranyl group, a cyclic boranyl group, —BF3Mn1, —Sn(R12)(R13)(R14), a leaving group, a carboxy group, a formyl group, or —NR16R17; and X2 is a hydrogen atom or —CO2R18.
    Type: Application
    Filed: July 18, 2014
    Publication date: June 16, 2016
    Applicant: Eisai R&D Management Co., Lt.d
    Inventors: Keigo Tanaka, Takashi Fukuyama, Norio Murai, Wataru Itano, Shinsuke Hirota, Daisuke Iida, Hiroshi Azuma
  • Publication number: 20160118198
    Abstract: An electrode for a power storage device includes carbon nanotubes, graphene, an ionic liquid, and a three-dimensional network metal porous body which holds the carbon nanotubes, the graphene, and the ionic liquid in pore portions, wherein a ratio of a total amount of the carbon nanotubes and the graphene to an amount of the ionic liquid is more than or equal to 10% by mass and less than or equal to 90% by mass, and a mass ratio between the carbon nanotubes and the graphene is within a range of 3:7 to 7:3.
    Type: Application
    Filed: May 13, 2014
    Publication date: April 28, 2016
    Inventors: Kazuki OKUNO, Masatoshi MAJIMA, Takayuki NOGUCHI, Daisuke IIDA, Masamichi KURAMOTO, Masashi ISHIKAWA, Maki HATTORI, Takumi INUI
  • Patent number: 9048025
    Abstract: An electrode for an electric storage device includes at least an active material selected from the group consisting of a carbon nanotube, activated carbon, hard carbon, graphite, graphene and a carbon nanohorn; an ionic liquid; and a three-dimensional network metal porous body.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: June 2, 2015
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., MEIDENSHA CORPORATION
    Inventors: Kazuki Okuno, Akihisa Hosoe, Masatoshi Majima, Yoshihiro Nakai, Takayuki Noguchi, Daisuke Komatsu, Daisuke Iida, Masashi Yamamoto, Masamichi Kuramoto
  • Patent number: 8124780
    Abstract: A novel chemical compound useful as a therapeutic or prophylactic agent for acid-related diseases is provided, which has an excellent inhibitory effect against gastric acid secretion, an excellent effect of maintaining the inhibitory effect against gastric acid secretion, thereby maintaining intragastric pH high for a long time, and having more safety and appropriate physicochemical stability. Provided is a compound represented by where R1 and R3 may be the same or different and each represent a hydrogen atom or a C1-C6 alkyl group; R2 represents (5,5-dimethyl-1,3-dioxan-2-yl)methoxy group, 5,7-dioxaspiro[2.5]oct-6-ylmethoxy group, 1,5,9-trioxaspiro[5.5]undec-3-ylmethoxy group, or (2,2-dimethyl-1,3-dioxan-5-yl)methoxy group; R4, R5, R6 and R7 represent a hydrogen atom, halogen atom, C1-C6 alkyl group, C1-C6 haloalkyl group, C1-C6 alkoxy group or C1-C6 haloalkoxy group; and W1 represents a single bond, methylene or ethylene group, a salt thereof or a solvate of these.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: February 28, 2012
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Shuhei Miyazawa, Masanobu Shinoda, Tetsuya Kawahara, Nobuhisa Watanabe, Hitoshi Harada, Daisuke Iida, Hiroki Terauchi, Junichi Nagakawa, Hideaki Fujisaki, Atsuhiko Kubota, Masato Ueda
  • Publication number: 20110009624
    Abstract: The present invention provides a compound that has superior gastric acid secretion inhibitory action, ample long-lasting gastric acid secretion inhibitory action, and is able to maintain intragastric pH at a high level for an extended period of time, making it useful as a therapeutic or prophylactic agent for diseases or symptoms caused by gastric acid, as well as an active form of this compound (form to which the compound is converted in the body following administration thereof) in the form of a compound represented by general formula (1a) (wherein R2 represents a group represented by formula (I) or the like, and R1, R3, W1 and X? are as defined in the description).
    Type: Application
    Filed: October 11, 2007
    Publication date: January 13, 2011
    Inventors: Masato Ueda, Daisuke Iida, Sachiko Kikuchi, Masaharu Gotoda
  • Publication number: 20100022778
    Abstract: It is an object of the present invention to provide a process for the production on an industrial scale of a compound (1) or a salt thereof. There is provided a process for the production of compound (1) represented by the formula or a salt thereof: (wherein R1 and R3 independently represents a hydrogen atom or a methyl group), the process comprising the steps of: (a) reacting together a compound (3T) represented by the formula: (wherein X1 represents a leaving group, and R1 and R3 are defined as above) and (2,2-dimethyl-1,3-dioxan-5-yl)methanol represented by the formula or a salt thereof: so as to produce a compound (2T) represented by the formula (wherein R1 and R3 are defined as above); and (b) reacting the compound represented by above formula (2T) with an oxidizing agent.
    Type: Application
    Filed: October 11, 2007
    Publication date: January 28, 2010
    Inventors: Atsushi Kamada, Daisuke Iida, Hiroki Terauchi
  • Publication number: 20090292120
    Abstract: The present invention provides a compound that has superior gastric acid secretion inhibitory action, ample long-lasting gastric acid secretion inhibitory action, and is able to maintain intragastric pH at a high level for an extended period of time, making it useful as a therapeutic or prophylactic agent for diseases or symptoms caused by gastric acid, as well as an active form of this compound (form to which the compound is converted in the body following administration thereof) in the form of a compound represented by general formula (1a) (wherein R2 represents a group represented by formula (I) or the like, and R1, R3, W1 and X? are as defined in the description).
    Type: Application
    Filed: October 11, 2007
    Publication date: November 26, 2009
    Inventors: Masato Ueda, Daisuke Iida, Sachiko Kikuchi, Masaharu Gotoda
  • Publication number: 20090203911
    Abstract: A novel chemical compound useful as a therapeutic or prophylactic agent for acid-related diseases is provided, which has an excellent inhibitory effect against gastric acid secretion, an excellent effect of maintaining the inhibitory effect against gastric acid secretion, thereby maintaining intragastric pH high for a long time, and having more safety and appropriate physicochemical stability. Provided is a compound represented by where R1 and R3 may be the same or different and each represent a hydrogen atom or a C1-C6 alkyl group; R2 represents (5,5-dimethyl-1,3-dioxan-2-yl)methoxy group, 5,7-dioxaspiro[2.5]oct-6-ylmethoxy group, 1,5,9-trioxaspiro[5.5]undec-3-ylmethoxy group, or (2,2-dimethyl-1,3-dioxan-5-yl)methoxy group; R4, R5, R6 and R7 represent a hydrogen atom, halogen atom, C1-C6 alkyl group, C1-C6 haloalkyl group, C1-C6 alkoxy group or C1-C6 haloalkoxy group; and W1 represents a single bond, methylene or ethylene group, a salt thereof or a solvate of these.
    Type: Application
    Filed: August 11, 2008
    Publication date: August 13, 2009
    Inventors: Shuhei MIYAZAWA, Masanobu Shinoda, Tetsuya Kawahara, Nobuhisa Watanabe, Hitoshi Harada, Daisuke Iida, Hiroki Terauchi, Junichi Nagakawa, Hideaki Fujisaki, Atsuhiko Kubota, Masato Ueda
  • Publication number: 20090030023
    Abstract: A compound represented by the following formula (I), a salt, or a solvate thereof: wherein, R1 and R2 are the same as or different from each other and each represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group, a non-aromatic heterocyclic group, an aromatic hydrocarbon cyclic group, an aromatic heterocyclic group, an acyl group or an alkylsulfonyl group all of which may be substituted and wherein one, or both, of R1 or R2 is an aromatic, or non-aromatic, heterocyclic group which may be substituted; R3 represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon cyclic group, an aromatic heterocyclic group, a nitrogen atom, an oxygen atom or a sulfur atom all of which may be substituted if possible; and R4 is a pyridyl group which may be substituted.
    Type: Application
    Filed: March 24, 2008
    Publication date: January 29, 2009
    Inventors: Hitoshi Harada, Masato Ueda, Yoshihiko Kotake, Masahiro Yasuda, Daisuke Iida, Junichi Nagakawa, Makoto Nakagawa
  • Patent number: 7425634
    Abstract: An object of the present invention is to provide a novel chemical compound useful as a therapeutic or prophylactic agent for acid-related diseases, having an excellent inhibitory effect against gastric acid secretion, an excellent effect of maintaining the inhibitory effect against gastric acid secretion, thereby maintaining intragastric pH high for a long time, and having more safety and appropriate physicochemical stability. Provided is a compound represented by where R1 and R3 may be the same or different and each represent a hydrogen atom or a C1-C6 alkyl group; R2 represents (5,5-dimethyl-1,3-dioxan-2-yl)methoxy group, 5,7-dioxaspiro[2.5]oct-6-ylmethoxy group, 1,5,9-trioxaspiro[5.5]undec-3-ylmethoxy group, or (2,2-dimethyl-1,3-dioxan-5-yl)methoxy group; R4, R5, R6 and R7 represent a hydrogen atom, halogen atom, C1-C6 alkyl group, C1-C6 haloalkyl group, C1-C6 alkoxy group or C1-C6 haloalkoxy group; and W1 represents a single bond, methylene or ethylene group, a salt thereof or a solvate of these.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: September 16, 2008
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Shuhei Miyazawa, Masanobu Shinoda, Tetsuya Kawahara, Nobuhisa Watanabe, Hitoshi Harada, Daisuke Iida, Hiroki Terauchi, Junichi Nagakawa, Hideaki Fujisaki, Atsuhiko Kubota, Masato Ueda
  • Patent number: 7396836
    Abstract: A compound having excellent adenosine receptor (A1, A2A, A2B receptor) antagonistic action, of the following formula, a salt thereof or a solvate of them: wherein, R1 and R2, same or different, each represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkenyl group, an aromatic hydrocarbon cyclic group, an acyl group or an alkylsulfonyl group, which groups may be substituted (except the hydrogen atom); R3 represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon cyclic group, a nitrogen atom, an oxygen atom or a sulfur atom, which groups may be substituted (except the hydrogen atom, the halogen atom and the cyano group); R4 represents an aromatic hydrocarbon cyclic group which may be substituted, and R5 represents an aromatic hydrocarbon cyclic group which may be substituted.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: July 8, 2008
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Hitoshi Harada, Masato Ueda, Yoshihiko Kotake, Masahiro Yasuda, Daisuke Iida, Junichi Nagakawa, Makoto Nakagawa
  • Publication number: 20070015782
    Abstract: An object of the present invention is to provide a novel chemical compound useful as a therapeutic or prophylactic agent for acid-related diseases, having an excellent inhibitory effect against gastric acid secretion, an excellent effect of maintaining the inhibitory effect against gastric acid secretion, thereby maintaining intragastric pH high for a long time, and having more safety and appropriate physicochemical stability. Provided is a compound represented by where R1 and R3 may be the same or different and each represent a hydrogen atom or a C1-C6 alkyl group; R2 represents (5,5-dimethyl-1,3-dioxan-2-yl)methoxy group, 5,7-dioxaspiro[2.5]oct-6-ylmethoxy group, 1,5,9-trioxaspiro[5.5]undec-3-ylmethoxy group, or (2,2-dimethyl-1,3-dioxan-5-yl)methoxy group; R4, R5, R6 and R7 represent a hydrogen atom, halogen atom, C1-C6 alkyl group, C1-C6 haloalkyl group, C1-C6 alkoxy group or C1-C6 haloalkoxy group; and W1 represents a single bond, methylene or ethylene group, a salt thereof or a solvate of these.
    Type: Application
    Filed: April 14, 2006
    Publication date: January 18, 2007
    Inventors: Shuhei Miyazawa, Masanobu Shinoda, Tetsuya Kawahara, Nobuhisa Watanabe, Hitoshi Harada, Daisuke Iida, Hiroki Terauchi, Junichi Nagakawa, Hideaki Fujisaki, Atsuhiko Kubota, Masato Ueda
  • Publication number: 20070010542
    Abstract: An object of the present invention is to provide a novel chemical compound useful as a therapeutic or prophylactic agent for acid-related diseases, having an excellent inhibitory effect against gastric acid secretion, an excellent effect of maintaining the inhibitory effect against gastric acid secretion, thereby maintaining intragastric pH high for a long time, and having more safety and appropriate physicochemical stability. Provided is a compound represented by where R1 and R3 may be the same or different and each represent a hydrogen atom or a C1-C6 alkyl group; R2 represents (5,5-dimethyl-1,3-dioxan-2-yl)methoxy group, 5,7-dioxaspiro[2.5]oct-6-ylmethoxy group, 1,5,9-trioxaspiro[5.5]undec-3-ylmethoxy group, or (2,2-dimethyl-1,3-dioxan-5-yl)methoxy group; R4, R5, R6 and R7 represent a hydrogen atom, halogen atom, C1-C6 alkyl group, C1-C6 haloalkyl group, C1-C6 alkoxy group or C1-C6 haloalkoxy group; and W1 represents a single bond, methylene or ethylene group, a salt thereof or a solvate of these.
    Type: Application
    Filed: September 14, 2006
    Publication date: January 11, 2007
    Inventors: Shuhei Miyazawa, Masanobu Shinoda, Tetsuya Kawahara, Nobuhisa Watanabe, Hitoshi Harada, Daisuke Iida, Hiroki Terauchi, Junichi Nagakawa, Hideaki Fujisaki, Atsuhiko Kubota, Masato Ueda
  • Publication number: 20050004149
    Abstract: The present invention provides a novel pyrimidine compound having an excellent adenosine receptor (A1, A2A, A2B receptor) antagonistic action. More specifically, it provides a compound represented by the following formula, a salt thereof or a solvate of them.
    Type: Application
    Filed: October 22, 2002
    Publication date: January 6, 2005
    Inventors: Hitoshi Harada, Osamu Asano, Masato Ueda, Shuhei Miyazawa, Yoshihiko Kotake, Yasuhiro Kabasawa, Masahiro Yasuda, Nobuyuki Yasuda, Daisuke Iida, Junichi Nagakawa, Kazuo Hirota, Makoto Nakagawa