Patents by Inventor Kenichi Fushihara

Kenichi Fushihara 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: 11117895
    Abstract: A process for producing crystals of a compound represented by the following formula (I): by crystallizing the compound from an aqueous solution containing the compound and an inorganic salt, such as sodium chloride. Such crystals can be subjected to lyophilization to provide a lyophilized composition having a desirable storage stability.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: September 14, 2021
    Assignee: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Takaya Ogawa, Takuya Yokoyama, Shusuke Furuyama, Masato Ichiki, Kenichi Fushihara
  • Publication number: 20190202831
    Abstract: A process for producing crystals of a compound represented by the following formula (I): by crystallizing the compound from an aqueous solution containing the compound and an inorganic salt, such as sodium chloride. Such crystals can be subjected to lyophilization to provide a lyophilized composition having a desirable storage stability.
    Type: Application
    Filed: March 8, 2019
    Publication date: July 4, 2019
    Applicant: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Takaya OGAWA, Takuya YOKOYAMA, Shusuke FURUYAMA, Masato ICHIKI, Kenichi FUSHIHARA
  • Patent number: 10294224
    Abstract: A process for producing crystals of a compound represented by the following formula (I): by crystallizing the compound from an aqueous solution containing the compound and an inorganic salt, such as sodium chloride. Such crystals can be subjected to lyophilization to provide a lyophilized composition having a desirable storage stability.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: May 21, 2019
    Assignee: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Takaya Ogawa, Takuya Yokoyama, Shusuke Furuyama, Masato Ichiki, Kenichi Fushihara
  • Publication number: 20170327499
    Abstract: A process for producing crystals of a compound represented by the following formula (l): by crystallizing the compound from an aqueous solution containing the compound and an inorganic salt, such as sodium chloride.
    Type: Application
    Filed: December 4, 2015
    Publication date: November 16, 2017
    Applicant: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Takaya OGAWA, Takuya YOKOYAMA, Shusuke FURUYAMA, Masato ICHIKI, Kenichi FUSHIHARA
  • Patent number: 7238812
    Abstract: Tricyclic triazolobenzazepine derivatives in the form or a prodrug are provided. The compounds according to the present invention are those represented by formula (I) and pharmacologically acceptable salts and solvates thereon. The compounds are useful as antiallergic agents and exhibit excellent bioavailability.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: July 3, 2007
    Assignee: Meji Seika Kaisha, Ltd.
    Inventors: Yasuo Ohtsuka, Toshio Nishizuka, Sohjiro Shiokawa, Seiji Tsutsumi, Mami Kawaguchi, Hideo Kitagawa, Hiromi Takata, Takashi Shishikura, Toyoaki Ishikura, Kenichi Fushihara, Yumiko Okada, Sachiko Miyamoto, Maki Shiobara
  • Publication number: 20060074074
    Abstract: Tricyclic triazolobenzazepine derivatives in the form or a prodrug are provided. The compounds according to the present invention are those represented by formula (I) and pharmacologically acceptable salts and solvates thereon. The compounds are useful as antiallergic agents and exhibit excellent bioavailability.
    Type: Application
    Filed: November 9, 2005
    Publication date: April 6, 2006
    Inventors: Yasuo Ohtsuka, Toshio Nishizuka, Sohjiro Shiokawa, Seiji Tsutsumi, Mami Kawaguchi, Hideo Kitagawa, Hiromi Takata, Takashi Shishikura, Toyoaki Ishikura, Kenichi Fushihara, Yumiko Okada, Sachiko Miyamoto, Maki Shiobara
  • Patent number: 7022860
    Abstract: A process for preparing a compound represented by formula (IIa?) wherein Q represents group (i) as defined in the specification and R2 to R5, R31, R32, and R52 are as defined in the specification, by (1) reacting a compound represented by formula (V) wherein R2 to R5 and R52 are as defined in the specification. with a compound represented by R31R32C?O wherein R31 and R32 are as defined in the specification; (2) reacting the compound prepared in (1) with a compound represented by R71—C(?O)—R72 wherein R71 and R72 each independently represent a chlorine atom, 4-nitrophenyl, or 1-imidazolyl; and (3) reacting the compound prepared in (2) with a compound represented by R33OH wherein R33 is as defined in the specification.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: April 4, 2006
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yasuo Ohtsuka, Toshio Nishizuka, Sohjiro Shiokawa, Seiji Tsutsumi, Mami Kawaguchi, Hideo Kitagawa, Hiromi Takata, Takashi Shishikura, Toyoaki Ishikura, Kenichi Fushihara, Yumiko Okada, Sachiko Miyamoto, Maki Shiobara
  • Patent number: 6737416
    Abstract: A compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof: wherein R1 represents hydrogen atom, an alkyl group, a substituted alkyl group and the like; R2 and R3 represent hydrogen atom, an alkyl group, a substituted alkyl group, an alkoxyl group and the like; X represents —CH2—, —O—, or —NH—; A represents the following group (II): [in which R7 and R8 represent hydrogen atom, an alkyl group, an acyl group, an alkoxycarbonyl group and the like; R9 and R10 represents hydrogen atom, a halogen atom, hydroxyl group, phenyl group, an alkyl group and the like] and the like; and E represents hydrogen atom and the like, which has inhibitory activity against carboxypeptidase B and is useful for therapeutic and/or preventive treatment of a thrombotic disease.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: May 18, 2004
    Assignee: Meiji Seika Kaisha Ltd.
    Inventors: Kenichi Fushihara, Chika Kikuchi, Tetsuya Matsushima, Kenichi Kanemoto, Eriko Satoh, Takehiro Yamamoto, Kokichi Suzuki
  • Publication number: 20030119787
    Abstract: A compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof: 1
    Type: Application
    Filed: October 7, 2002
    Publication date: June 26, 2003
    Applicant: Meiji Seika Kaisha Ltd.
    Inventors: Kenichi Fushihara, Chika Kikuchi, Tetsuya Matsushima, Kenichi Kanemoto, Eriko Satoh, Takehiro Yamamoto, Kokichi Suzuki
  • Patent number: 6576627
    Abstract: A compound represented by the following general formula (I) and a pharmacologically acceptable salt thereof: wherein R1 represents hydrogen atom, an alkyl group, a substituted alkyl group and the like; R2 and R3 represent hydrogen atom, an alkyl group, a substituted alkyl group, an alkoxyl group and the like; X represents —CH2—, —O—, or —NH—; A represents the following group (II): [in which R7 and R8 represent hydrogen atom, an alkyl group, an acyl group, an alkoxycarbonyl group and the like; R9 and R10 represents hydrogen atom, a halogen atom, hydroxyl group, phenyl group, an alkyl group and the like] and the like; and E represents hydrogen atom and the like, which has inhibitory activity against carboxypeptidase B and is useful for therapeutic and/or preventive treatment of a thrombotic disease.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: June 10, 2003
    Assignee: Meiji Seika Kaisha Ltd.
    Inventors: Kenichi Fushihara, Chika Kikuchi, Tetsuya Matsushima, Kenichi Kanemoto, Eriko Satoh, Takehiro Yamamoto, Kokichi Suzuki
  • Publication number: 20020137739
    Abstract: Tricyclic triazolobenzazepine derivatives in the form of a prodrug are provided. The compounds according to the present invention are those represented by formula (I) and pharmacologically acceptable salts and solvates thereof. The compounds are useful as antiallergic agents and exhibit excellent bioavailability.
    Type: Application
    Filed: February 13, 2002
    Publication date: September 26, 2002
    Inventors: Yasuo Ohtsuka, Toshio Nishizuka, Sohjiro Shiokawa, Seiji Tsutsumi, Mami Kawaguchi, Hideo Kitagawa, Hiromi Takata, Takashi Shishikura, Toyoaki Ishikura, Kenichi Fushihara, Yumiko Okada, Sachiko Miyamoto, Maki Shiobara
  • Patent number: 6372735
    Abstract: Tricyclic triazolobenzazepine derivatives in the form or a prodrug are provided. The compounds according to the present invention are those represented by formula (I) and pharmacologically acceptable salts and solvates thereof. The compounds are useful as antiallergic agents and exhibit excellent bioavailability.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: April 16, 2002
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yasuo Ohtsuka, Toshio Nishizuka, Sohjiro Shiokawa, Seiji Tsutsumi, Mami Kawaguchi, Hideo Kitagawa, Hiromi Takata, Takashi Shishikura, Toyoaki Ishikura, Kenichi Fushihara, Yumiko Okada, Sachiko Miyamoto, Maki Shiobara
  • Patent number: 6310056
    Abstract: The carbapenem derivatives represented by the following formula (I) is disclosed.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: October 30, 2001
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yuko Kano, Kazuhiro Aihara, Yumiko Toyooka, Toshiro Sasaki, Hiromasa Takizawa, Kenichi Fushihara, Kazuko Kobayashi, Kunio Atsumi, Katsuyoshi Iwamatsu, Takashi Ida
  • Patent number: 5840895
    Abstract: Compounds of formulae (II), (III), (IV) and (V) or salts thereof are intermediates for pharmacologically active tricyclic benzazepine and benzothiazepine derivatives, ##STR1## wherein R represents hydrogen, alkyl, phenylalkyl, or a protective group of a triazole ring, R.sup.1 -R.sup.5 represent hydrogen, alkyl, alkenyl, alkoxy, amino, oxim or hydroxyl, and R.sup.41 represents hydrogen, C.sub.1-6 alkyl which may be optionally substituted, or a protective group for a carboxyl group.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: November 24, 1998
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Yasuo Ohtsuka, Takashi Shishikura, Hiroko Ogino, Kenichi Fushihara, Mami Kawaguchi, Seiji Tsutsumi, Megumi Imai, Keiko Shito, Koji Tsuchiya, Junko Tanaka, Takako Iwasaki, Shigeru Hoshiko, Takashi Tsuruoka
  • Patent number: 5686442
    Abstract: The tricyclic benzazepine and benzothiazepine derivatives represented by the formula (I) and pharmacologically acceptable salts thereof are disclosed. ##STR1## wherein Z represents CO, --CR.sup.6 R.sup.7 -- or --S(O).sub.n, R represents hydrogen, alkyl, phenylalkyl, or a protective group of a triazole ring, R.sup.1 -R.sup.5 represent hydrogen, alkyl, alkenyl, alkoxy, amino, oxim or hydroxyl. These compounds have anti-allergic effect and are useful for the treatment and prophylaxis of allergic diseases.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: November 11, 1997
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Yasuo Ohtsuka, Takashi Shishikura, Hiroko Ogino, Kenichi Fushihara, Mami Kawaguchi, Seiji Tsutsumi, Megumi Imai, Keiko Shito, Koji Tsuchiya, Junko Tanaka, Takako Iwasaki, Shigeru Hoshiko, Takashi Tsuruoka