Patents by Inventor Yasuhisa Fujibayashi

Yasuhisa Fujibayashi 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).

  • Method of diagnosing pathological state of tumor cells using a diagnostic agent for glycometabolic function
    Patent number: 5904915
    Abstract: A diagnostic agent for glycometabolic function comprising a glucose derivative of the formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same or different and each represents hydrogen or acyl having 2 to 8 carbon atoms, with the proviso that at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is acyl and R.sup.5 represents X or --NHCOR.sup.6 X wherein X is a radioisotope of halogen and R.sup.6 is arylene or alkylene having 1 to 3 carbon atoms.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: May 18, 1999
    Assignee: Nihon Medi-Physics Co., Ltd.
    Inventors: Yasuhisa Fujibayashi, Atsuo Waki, Akira Yokoyama
  • Diagnostic agent for hypoxia or mitochondrial dysfunction comprising radioactive copper complex of dithiosemicarbazone derivative or diamine diol schiff base derivative
    Patent number: 5843400
    Abstract: A diagnostic agent for hypoxia or mitochondrial dysfunction is disclosed, comprising a radioactive copper complex of a dithiosemicarbazone derivative or a radioactive copper complex of a diamine diol schiff base derivative. This agent has good transferability to the target tissue, reduction reaction affinity at a hypoxic site, high stability in a non-target site and rapidly disappears.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: December 1, 1998
    Assignee: Nihon Medi-Physics Co., Ltd.
    Inventors: Yasuhisa Fujibayashi, Akira Yokoyama