Patents by Inventor Michio Masuoka

Michio Masuoka 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).

  • 17-Nor-6-methyl-steroids
    Patent number: 3953483
    Abstract: Novel steroid compounds are provided represented by the formula: ##SPC1##Wherein each of R.sup.1 and R.sup.2 represents hydrogen or methyl group or R.sup.1 and R.sup.2 may be combined with each other to represent methylene group, n is 2 or 3 and the dotted line means a double bond at 6-exo-position when n is 2 or between 6- and 7-position when n is 3.These novel compounds show a strong anti-androgenic activity, especially by oral administration, and can be used as a remedy for the prostatomegaly.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: April 27, 1976
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Kentaro Hiraga, Kouichi Yoshioka, Giichi Goto, Ryo Nakayama, Michio Masuoka