Patents by Inventor Kenichiro Imamura

Kenichiro Imamura 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: 9447090
    Abstract: An excellent drug for treating or preventing cardiovascular diseases, based on cGMP production enhancing action due to soluble guanylate cyclase activating action, is provided. It was found that imidazopyridine compounds having a carbamoyl group at the 3-position and a substituent bonded at the 8-position via an oxygen atom in an imidazo[1,2-a]pyridine skeleton exhibits a cGMP production enhancing action by a potent soluble guanylate cyclase activating action, and is useful as a drug for treating or preventing various soluble guanylate cyclase-related cardiovascular diseases, thereby completing the present invention.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: September 20, 2016
    Assignee: Astellas Pharma Inc.
    Inventors: Yuji Koga, Kyoichi Maeno, Ippei Sato, Yoshimasa Imamura, Takeshi Hanazawa, Maiko Iida, Kazuhiko Ohne, Kenichiro Imamura, Tsubasa Watanabe, Eisuke Nozawa, Hiroshi Shibata
  • Publication number: 20140088080
    Abstract: [Problem] An excellent drug for treating or preventing cardiovascular diseases, based on cGMP production enhancing action due to soluble guanylate cyclase activating action, is provided. [Means for Solution] It was found that imidazopyridine compounds having a carbamoyl group at the 3-position and a substituent bonded at the 8-position via an oxygen atom in an imidazo[1,2-a]pyridine skeleton exhibits a cGMP production enhancing action by a potent soluble guanylate cyclase activating action, and is useful as a drug for treating or preventing various soluble guanylate cyclase-related cardiovascular diseases, thereby completing the present invention.
    Type: Application
    Filed: November 26, 2013
    Publication date: March 27, 2014
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Yuji KOGA, Kyoichi MAENO, Ippei SATO, Yoshimasa IMAMURA, Takeshi HANAZAWA, Maiko IIDA, Kazuhiko OHNE, Kenichiro IMAMURA, Tsubasa WATANABE, Eisuke NOZAWA, Hiroshi SHIBATA
  • Patent number: 8367702
    Abstract: As a result of extensive studies on NAD(P)H oxidase inhibitors, the present inventors found that a quinolone derivative having, at the 2-position, an alkyl group substituted with a heteroatom or the like has an excellent NAD(P)H oxidase inhibitory activity, and accomplished the present invention. The compound of the present invention has a reactive oxygen species production inhibitory activity based on the NAD(P)H oxidase inhibitory activity, and therefore can be used as an agent for preventing and/or treating diabetes, impaired glucose tolerance, hyperlipidemia, fatty liver, diabetic complications and the like.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: February 5, 2013
    Assignee: Astellas Pharma Inc.
    Inventors: Kenichi Onda, Kenichiro Imamura, Fumie Sato, Hiroyuki Moritomo, Yasuharu Urano, Yuki Sawada, Naoki Ishibashi, Keita Nakanishi, Kazuhiro Yokoyama, Shigetada Furukawa, Kazuhiro Momose
  • Patent number: 7887313
    Abstract: To provide a mold apparatus for resin encapsulation, which is small in number of components, has a simple driving mechanism, is easy in assembly or disassembly work, requires no labor for maintenance and has good workability; and a resin encapsulation method. Therefore, of a lower cavity bar 51 and an upper cavity bar 26, a plurality of groove-shaped pots 52 are provided in parallel at a predetermined pitch in a region where a substrate board is disposed, and each groove-shaped pot 52 is individually provided with a plurality of cavities 54 in parallel through runners. Then, a plunger plate 60 inserted in the grooved-shaped pot 52 in a manner so as to be able to move up and down is driven by a plunger 76, whereby a resin for encapsulation inserted into the pot 52 is melted with the plunger plate 60, and the melted resin is filled in the cavities 54 through the runners.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: February 15, 2011
    Assignee: Dai-Ichi Seiko Co., Ltd.
    Inventors: Kenji Ogata, Masashi Nishiguchi, Kenichiro Imamura
  • Publication number: 20100256113
    Abstract: As a result of extensive studies on NAD(P)H oxidase inhibitors, the present inventors found that a quinolone derivative having, at the 2-position, an alkyl group substituted with a heteroatom or the like has an excellent NAD(P)H oxidase inhibitory activity, and accomplished the present invention. The compound of the present invention has a reactive oxygen species production inhibitory activity based on the NAD(P)H oxidase inhibitory activity, and therefore can be used as an agent for preventing and/or treating diabetes, impaired glucose tolerance, hyperlipidemia, fatty liver, diabetic complications and the like.
    Type: Application
    Filed: September 25, 2008
    Publication date: October 7, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Kenichi Onda, Kenichiro Imamura, Fumie Sato, Hiroyuki Moritomo, Yasuharu Urano, Yuki Sawada, Naoki Ishibashi, Keita Nakanishi, Kazuhiro Yokoyama, Shigetada Furukawa, Kazuhiro Momose
  • Publication number: 20080308969
    Abstract: To provide a mold apparatus for resin encapsulation, which is small in number of components, has a simple driving mechanism, is easy in assembly or disassembly work, requires no labor for maintenance and has good workability; and a resin encapsulation method. Therefore, of a lower cavity bar 51 and an upper cavity bar 26, a plurality of groove-shaped pots 52 are provided in parallel at a predetermined pitch in a region where a substrate board is disposed, and each groove-shaped pot 52 is individually provided with a plurality of cavities 54 in parallel through runners. Then, a plunger plate 60 inserted in the grooved-shaped pot 52 in a manner so as to be able to move up and down is driven by a plunger 76, whereby a resin for encapsulation inserted into the pot 52 is melted with the plunger plate 60, and the melted resin is filled in the cavities 54 through the runners.
    Type: Application
    Filed: November 24, 2006
    Publication date: December 18, 2008
    Inventors: Kenji Ogata, Masashi Nishiguchi, Kenichiro Imamura
  • Patent number: 7317009
    Abstract: The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-? mediated diseases
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: January 8, 2008
    Assignee: Astellas Pharma Inc.
    Inventors: Yoshito Abe, Makoto Inoue, Tsuyoshi Mizutani, Kozo Sawada, Kazuhiko Ohne, Mitsuaki Okumura, Yuki Sawada, Kenichiro Imamura
  • Patent number: 7153854
    Abstract: The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-? mediated diseases
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: December 26, 2006
    Assignee: Astellas Pharma Inc.
    Inventors: Yoshito Abe, Makoto Inoue, Tsuyoshi Mizutani, Kozo Sawada, Kazuhiko Ohne, Mitsuaki Okumura, Yuki Sawada, Kenichiro Imamura
  • Publication number: 20060270678
    Abstract: The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-? mediated diseases.
    Type: Application
    Filed: August 8, 2006
    Publication date: November 30, 2006
    Applicant: Astellas Pharma Inc.
    Inventors: Yoshito Abe, Makoto Inoue, Tsuyoshi Mizutani, Kozo Sawada, Kazuhiko Ohne, Mitsuaki Okumura, Yuki Sawada, Kenichiro Imamura
  • Patent number: 7129243
    Abstract: The present invention relates to a compound of the formula (I) wherein R1 is benzofuranyl substituted by halogen, or styryl substituted by halogen; R2 is substituted hydroxy, substituted mercapto or substituted sulfonyl; and X is or pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: October 31, 2006
    Assignee: Astellas Pharma Inc.
    Inventors: Ichiro Shima, Takehiko Ohkawa, Kentaro Sato, Naoki Ishibashi, Kenichiro Imamura
  • Publication number: 20050075342
    Abstract: The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-? mediated diseases.
    Type: Application
    Filed: December 30, 2003
    Publication date: April 7, 2005
    Applicant: FUJISAWA PHARMACEUTICAL CO., LTD.
    Inventors: Yoshito Abe, Makoto Inoue, Tsuyoshi Mizutani, Kozo Sawada, Kazuhiko Ohne, Mitsuaki Okumura, Yuki Sawada, Kenichiro Imamura
  • Patent number: 6825200
    Abstract: The present invention a compound represented by the formula (I): where the structural variables R1-R6 are defined herein.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: November 30, 2004
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Ichiro Shima, Takehiko Ohkawa, Kazuhiko Ohne, Kentaro Sato, Naoki Ishibashi, Kenichiro Imamura
  • Publication number: 20040157891
    Abstract: A compound of the formula (I): 1
    Type: Application
    Filed: January 16, 2004
    Publication date: August 12, 2004
    Applicant: FUJISAWA PHARMACEUTICAL CO., LTD.
    Inventors: Hirofumi Yamamoto, Junya Ishida, Daisuke Tanabe, Shigeki Satoh, Yuki Sawada, Takehiko Ohkawa, Kenichiro Imamura, Katsuya Nakamura
  • Publication number: 20040097425
    Abstract: The present invention relates to a compound of the formula (I)wherein R1 is benzofuranyl substituted by halogen, or styryl substituted by halogen; R2 is substituted hydroxy, substituted mercapto or substituted sulfonyl; and X is or pharmaceutically acceptable salts thereof. The compound (1) of the present invention and pharmaceutically acceptable salts thereof possess a strong inhibitory activity on the production of nitric oxide (NO), and are useful for prevention and/or treatment of NO-mediated diseases in human being and animals.
    Type: Application
    Filed: December 23, 2003
    Publication date: May 20, 2004
    Inventors: Ichiro Shima, Takehiko Ohkawa, Kentaro Sato, Naoki Ishibashi, Kenichiro Imamura