Patents by Inventor Fujinori Sasaki

Fujinori Sasaki 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).

  • N-methylphenylserine alkyl ester derivatives and uses thereof
    Patent number: 5288898
    Abstract: As new compounds are now provided N-methyl-3-(3,4-dihydroxyphenyl)serine alkyl esters which are effective as an .alpha.-adrenergic and .beta.-adrenergic agent to stimulate the .alpha.-adrenergic and .beta.-adrenergic functions of the central nervous system of mammalian animals and are expectable to be useful for therapeutic treatment of disorders as invoked by reduced biological activities or functions of the .alpha.- and/or .beta.-adrenergic neurons. N-methyl-L-threo-3-(3,4-dihydroxyphenyl)serine (C.sub.1 -C.sub.6) alkyl esters are preferred amongst the new compounds of this invention.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: February 22, 1994
    Assignee: Zaidan Hojim Biseibutsu Kagaku Kenkyu Kai
    Inventors: Hamao Umezawa, Toshiharu Nagatsu, Tomio Takeuchi, Hajime Morishima, Yoshio Sawasaki, Hiroshi Takezawa, Fujinori Sasaki
  • Quinazolinde-dione compounds, process for production thereof and pharmaceutical use thereof
    Patent number: 4405623
    Abstract: A 5,6,7-substituted-2,4(1H,3H)-quinazolinedione compound of the formula (I), ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, A and B are as defined in claim 1 and its acid addition salt; and a vasodilating and hypotensive composition containing the aforesaid compound.
    Type: Grant
    Filed: May 15, 1981
    Date of Patent: September 20, 1983
    Assignee: Masayuki Ishikawa
    Inventors: Masayuki Ishikawa, Akiko Sugimoto, Yukuo Eguchi, Fujinori Sasaki, Hisashi Ebisawa, Soyao Moriguchi, Katsuhiko Gotoh