Patents by Inventor Fumiko Hamaguchi

Fumiko Hamaguchi 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).

  • Anti-platelet aggregating agent
    Patent number: 5227395
    Abstract: The use of 1-phenoxycarbonyl-2-pyrrolidinone derivatives as an anti-platelet aggregating agent. The derivatives are of the formula ##STR1## wherein R is a C.sub.1 -C.sub.6 alkyl group, a C.sub.1 -C.sub.6 alkoxy group, a nitro group or a halogen atom and n is 0, 1 or 2.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: July 13, 1993
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Hirohiko Komatsu, Einosuke Sakurai, Fumiko Hamaguchi, Tatsuo Nagasaka
  • 1-phenoxycarbonyl-2-pyrrolidinone derivatives and nootropic agents
    Patent number: 5140041
    Abstract: 1-Phenoxycarbonyl-2-pyrrolidinone derivatives of formula (I) or (I') are disclosed. ##STR1## wherein R is a C.sub.1 -C.sub.6 alkyl group, a C.sub.1 -C.sub.6 alkoxy group, a nitro group or a halogen atom and n is 1 or 2, and R' is the same as R, but including further a hydrogen atom. The compounds of formula (I') are useful as nootropic agents.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: August 18, 1992
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Fumiko Hamaguchi, Tatsuo Nagasaka, Einosuke Sakurai
  • Pyrrolidine derivatives as nootropic agents
    Patent number: 5110823
    Abstract: Pyrrolidine derivatives of formula (I) are disclosed. ##STR1## wherein the ring A represents the following heterocyclic ring ##STR2## The compounds of formula (I) are useful as nootropic agents.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: May 5, 1992
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Fumiko Hamaguchi, Tatsuo Nagasaka, Rie Hakamada, Einosuke Sakurai
  • Adenosine derivatives
    Patent number: 4464361
    Abstract: Adenosine derivatives of the general formula: ##STR1## wherein R.sup.1 is a group of the formula: ##STR2## in which R.sup.5 and R.sup.6 are each hydrogen, alkoxy or arylthio and R.sup.7 is hydrogen or halogen, or a group of the formula: ##STR3## and R.sup.2, R.sup.3 and R.sup.4 are each hydrogen or alkanoyl, and pharmaceutically acceptable salt thereof.These derivatives and salts thereof are useful as antihypertensives, bradycardiacs, etc. The method of production thereof and pharmaceutical compositions based on those adenosine derivatives or salts are also described.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: August 7, 1984
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Sadao Ohki, Fumiko Hamaguchi, Tatsuo Nagasaka, Hiroyuki Kikuchi