Patents by Inventor Yoshihei Hirasawa

Yoshihei Hirasawa 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 treating leukemia or leukemoid diseases
    Patent number: 4391802
    Abstract: A method of leukemia or leukemoid disease treatment by administration of a vitamin D derivative with a hydroxyl group at 1.alpha.-position is disclosed. It is believed that the vitamin D derivative with a hydroxyl group at 1.alpha.-position is capable of treating cancer through redifferentiation of cancer cells and that this capability is inherent in vitamin D derivatives with a hydroxyl group at 1.alpha.-position.
    Type: Grant
    Filed: March 9, 1982
    Date of Patent: July 5, 1983
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tatsuo Suda, Yoshihei Hirasawa, Sachio Takahashi, Etsuko Abe, Kunio Konno, Tadao Aoki
  • Method for suppressing abnormal rise in immunological function and agent useful therefor
    Patent number: 4341774
    Abstract: A method for suppressing abnormal rise in immunological function which often causes various types of autoimmune diseases, and an agent useful therefor are disclosed. The method is carried out by administering cholecalciferol or its derivative to patients suffering from abnormal rise in immunological function. The agent contains the above compound as active ingredient and is useful not only to treat and/or prevent the abnormal rise in immunological function but also to suppress graft rejection.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: July 27, 1982
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Takao Aoki, Hideo Miyakoshi, Yoshihei Hirasawa, Yasuo Nishii
  • Method for inhibiting the lowering of immunological function and agent therefor
    Patent number: 4340604
    Abstract: A method for inhibiting the lowering of immunological function of patients who are suffering from serious renal disorder such as chronic renal failure or uremia which comprises administering 1.alpha.-hydroxycholecalciferol to the patients is disclosed. An agent useful in the practice of the method is also disclosed.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: July 20, 1982
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Tadao Aoki, Hideo Miyakoshi, Yoshihei Hirasawa, Yasuo Nishii