Patents by Inventor Chiaki Kitami

Chiaki Kitami 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).

  • Processes for preparing optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compounds and intermediates therefor
    Patent number: 5162553
    Abstract: The present invention provides an industrially valuable method for preparing an optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compound which is useful as a starting material for an optically active benzopyran compound with antihypertensive, coronary blood flow-increasing activities and the like, and also provides a diastereometric ester compound with a 3-halo-4-hydroxy-2H-1-benzopyran compound which is useful as an intermediate for said epoxy compound.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: November 10, 1992
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Shinro Setoguchi, Mineo Tsuruda, Chiaki Kitami, Tsutomu Yamanaka
  • Processes for preparing optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compounds and intermediates therefor
    Patent number: 5066816
    Abstract: The present invention provides an industrially valuable method for preparing an optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compound which is useful as a starting material for an optically active benzopyran compound with antihypertensive, coronary blood flow-increasing activities and the like, and also provides a diastereomeric ester compound with a 3-halo-4-hydroxy-2H-1-benzopyran compound which is useful as an intermediate for said epoxy compound.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: November 19, 1991
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Shinro Setoguchi, Mineo Tsuruda, Chiaki Kitami, Tsutomu Yamanaka
  • Piperazine compounds
    Patent number: 4122178
    Abstract: Piperazine compounds useful as analgesics, and having the formula: ##STR1## wherein each of R.sup.1 and R.sup.2 is hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or CF.sub.3 ; R.sup.3 is hydrogen, hydroxyl, an optionally substituted phenyl (e.g. phenyl, halo-phenyl, C.sub.1-4 alkyl-phenyl, C.sub.1-4 alkoxy-phenyl or CF.sub.3 -phenyl), pyridyl, 2-thienyl or 2-pyrimidinyl; m is 2 or 3; and n is 0, 1 or 2, and pharmaceutically acceptable acid addition salts thereof are disclosed.
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: October 24, 1978
    Assignee: Yoshitomi Pharmaceutical Industries, Ltd.
    Inventors: Gen Hasegawa, Takanori Oe, Chiaki Kitami