Patents by Inventor Nobuo Miyata

Nobuo Miyata 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 for preparing 7.beta.-hydroxy-4-pregnene-3,20-dione derivatives
    Patent number: 5164302
    Abstract: Novel 7.beta.-hydroxy-4-pregnene-3,20-dione derivatives are disclosed.The group of these compounds has possibility of being utilized as an intermediate for the synthesis of progesterone derivatives having ovulation-inhibiting activity. These compounds themselves have also cell differentiation activity for M1 cells.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: November 17, 1992
    Assignee: Snow Brand Milk Products Company, Limited
    Inventors: Makoto Yoshihama, Koji Tamura, Nobuo Miyata, Masamichi Nakakoshi
  • Physiologically active SN-198C compounds
    Patent number: 5126436
    Abstract: Physiologically active material SN-198C producing bacteria are disclosed which belong to Streptomyces species and products which have the following structural formula: ##STR1##
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: June 30, 1992
    Assignee: Snow Brand Milk Products Company Limited
    Inventors: Kenichi Kimura, Shoji Nakayama, Nobuo Miyata
  • Process for preparing 14-.alpha.-hydroxy-4-androstene-3,6,17-trione
    Patent number: 5098535
    Abstract: A process for the preparation in high yield of 14.alpha.-hydroxy-4-androstene-3,6,17-trione which has an aromatase inhibition activity and is useful as an antitumor agent, in which the 6.beta.-hydroxyl group of 6.beta., 14.alpha.-dihydroxy-4-androstene-3,17-dione is selectively oxidized with the aid of visible light energy.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: March 24, 1992
    Assignee: Snow Brand Milk Products Co., Ltd.
    Inventors: Masamichi Nakakoshi, Kohji Tamura, Makoto Yoshihama, Nobuo Miyata
  • Novel androst-4-ene-3,17-dione derivatives and method for preparing same
    Patent number: 5079377
    Abstract: Novel androst-4-ene-3,17-dione derivatives are disclosed. The group of these compounds has biological activities, in particular, the inhibiting activity on human placenta-derived estrogen-synthesizing enzyme. Therefore these compounds are expected to be utilized in the field of medical care, particularly as anticancer drugs.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: January 7, 1992
    Assignee: Snow Brand Milk Products Co., Ltd.
    Inventors: Makoto Yoshihama, Koji Tamura, Nobuo Miyata, Shoji Nakayama, Masamichi Nakakoshi
  • Novel 7 .beta.-hydroxy-4-pregnene-3,20-dione derivatives and method for preparing same
    Patent number: 5028722
    Abstract: Novel 7.beta.-hydroxy-4-pregnene-3,20-dione derivatives are disclosed.The group of these compounds has possibility of being utilized as an intermediate for the synthesis of progesterone derivatives having ovulation-inhibiting activity. These compounds themselves have also cell differentiation activity for M1 cells.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: July 2, 1991
    Assignee: Snow Brand Milk Products Co., Ltd.
    Inventors: Makoto Yoshihama, Koji Tamura, Nobuo Miyata, Masamichi Nakakoshi
  • Novel androst-4-ene-3,17-dione derivatives and method for preparing same
    Patent number: 4975368
    Abstract: Novel androst-4-ene-3,17-dione derivatives are disclosed. The group of these compounds has biological activities, in particular, the inhibiting activity on human placenta-derived estrogen-synthesizing enzyme. Therefore these compounds are expected to be utilized in the field of medical care, particularly as anticancer drugs.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: December 4, 1990
    Assignee: Snow Brand Milk Products Co., Ltd.
    Inventors: Makoto Yoshihama, Koji Tamura, Nobuo Miyata, Shoji Nakayama, Masamichi Nakakoshi