Patents by Inventor Ieharu Hishinuma

Ieharu Hishinuma 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).

  • Heterocycle-containing carbonic acid derivatives
    Patent number: 5612356
    Abstract: A heterocycle-containing carbonic acid derivative represented by the following general formula (I): ##STR1## or a physiologically acceptable salt thereof which exhibits an excellent preventive and therapeutic effect against various diseases, and an intermediate which is useful for the production of the heterocycle-containing carbonic acid derivative.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: March 18, 1997
    Assignee: Eisai Co., Ltd.
    Inventors: Hiroyuki Yoshimura, Mitsuo Nagai, Shigeki Hibi, Koichi Kikuchi, Ieharu Hishinuma, Junichi Nagakawa, Makoto Asada, Norimasa Miyamoto, Takayuki Hida, Aichi Ogasawara, Isao Yamatsu
  • Benzodioxole derivatives
    Patent number: 5475024
    Abstract: A new benzodioxole derivative has a substituent in the phenyl ring which is a carboxyalkylthioalkyl or the like and is effective to treat a liver disease.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: December 12, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Yoshitake Ogata, Makoto Ikeda, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Takashi Yamanaka, Ieharu Hishinuma, Junichi Nagakawa, Kazuo Hirota, Kaname Miyamoto, Toru Horie, Tsuneo Wakabayashi
  • Quinone derivatives and pharmacological use
    Patent number: 5385942
    Abstract: A quinone derivative useful in the treatment of hepatic diseases defined by the general formula: ##STR1## where X and Y may be the same or different from each other and are each a hydroxyl group, a group represented by the formula --(--OCH.sub.2 --).sub.n --OR.sup.6, wherein n is 0 or 1 and R.sup.6 is a lower alkyl group, or an acyl group.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: January 31, 1995
    Assignee: Eisai Co., Ltd.
    Inventors: Shinya Abe, Yasushi Okamoto, Katsuya Tagami, Shigeki Hibi, Junichi Nagakawa, Kazuo Hirota, Ieharu Hishinuma, Kaname Miyamoto, Takashi Yamanaka, Hiromitsu Yokohama, Tsutomu Yoshimura, Tohru Horie, Yasunori Akita, Koichi Katayama, Isao Yamatsu
  • Benzodioxole derivatives
    Patent number: 5292901
    Abstract: A new benzodioxole derivative has a substituent in the phenyl ring which is a carboxyalkylthioalkyl or the like and is effective to treat a liver disease.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: March 8, 1994
    Assignee: Eisai Co., Ltd.
    Inventors: Yoshitake Ogata, Makoto Ikeda, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Takashi Yamanaka, Ieharu Hishinuma, Junichi Nagakawa, Kazuo Hirota, Kaname Miyamoto, Toru Horie, Tsuneo Wakabayashi
  • Ouinone derivatives and pharmacological use
    Patent number: 5210239
    Abstract: A quinone derivative useful in the treatment of hepatic diseases defined by the general formula: ##STR1## where R1 is selected from the group consisting of alkyl, alkenly, alkynyl or heterocycle, R2 is a substituted nitrogen containing radical wherein the substituents on said nitrogen are selected from the group consisting of hydrogen, substituted or unsubstituted lower alkyl or heterocycles, and where said nitrogen may be a ring heteroatom, and R3, R4 and R5, may be the same or different and each are hydrogen, lower alkyl or lower alkoxy groups.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: May 11, 1993
    Assignee: Eisai Co., Ltd.
    Inventors: Shinya Abe, Yasushi Okamoto, Katsuya Tagami, Shigeki Hibi, Junichi Nagakawa, Kazuo Hirota, Ieharu Hishinuma, Kaname Miyamoto, Takashi Yamanaka, Hiromitsu Yokohama, Tsutomu Yoshimura, Tohru Horie, Yasunori Akita, Koichi Katayama, Isao Yamatsu
  • Benzodioxale derivatives
    Patent number: 5110956
    Abstract: A new benzodioxole derivative has a substituent in the phenyl ring which is a carboxyalkylthioalkyl or the like and is effective to treat a liver disease.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: May 5, 1992
    Assignee: Eisai Co., Ltd.
    Inventors: Yoshitake Ogata, Makoto Ikeda, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Takashi Yamanaka, Ieharu Hishinuma, Junichi Nagakawa, Kazuo Hirota, Kaname Miyamoto, Toru Horie, Tsuneo Wakabayashi
  • Guanidinobenzoic ester derivative
    Patent number: 5075335
    Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m --, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: December 24, 1991
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
  • Guanidinobenzoic ester derivative
    Patent number: 4948808
    Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m--, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: August 14, 1990
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
  • Guanidinobenzoic ester derivative
    Patent number: 4801603
    Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m --, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: January 31, 1989
    Assignee: Eisai Co., Ltd.
    Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi