Patents by Inventor Yasuo Saso

Yasuo Saso 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).

  • 5H-1,3,4-thiadiazolo(3,2-A)pyrimidin-5-one derivatives and agricultural-horticultural fungicide composition containing the same
    Patent number: 4985432
    Abstract: A new class of 5H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one derivatives were synthesized. They are useful as agricultural-horticultural fungicides.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: January 15, 1991
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Yukio Tokunaga, Koichiro Kaku, Yoshiyuki Kojima, Shinichiro Maeno, Nobumitsu Sawai, Yasuo Saso
  • 5H-1,3,4-thiadiazolo(3,2-A)pyrimidin-5-one derivatives and functional compositions containing the same
    Patent number: 4971971
    Abstract: A class of novel 5H-1,3,4-thiadiazolo[3,2-a]-pyrimidin-5-one derivatives are disclosed. These compounds exhibit remarkable fungicidal activities for pathogenic fungi of cucumber gray mold, cucumber downy mildew. Alternaria sooty spot of Chinese mustard, apple Alternaria leaf spot, pear black spot, rice blast, tomato late blight, etc.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: November 20, 1990
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Yukio Tokunaga, Yoshiyuki Kojima, Shinichiro Maeno, Nobumitsu Sawai, Yasuo Saso
  • 5H-1,3,4-thiadiazolo(3,2-A)pyrimidin-5-one derivatives and fungicidal compositions containing the same
    Patent number: 4866064
    Abstract: A class of novel 5H-1,3,4-thiadizaolo[3,2-a]pyrimidin-5-one derivatives are disclosed. These compounds exhibit remarkable fungicidal activities for pathogenic fungi of cucumber gray mold, cucumber downy mildew, Alternaria sooty spot of Chinese mustard, apple Alternaria leaf spot, pear black spot, rice blast, tomato late blight, etc.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: September 12, 1989
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Yukio Tokunaga, Yoshiyuki Kojima, Shinichiro Maeno, Nobumitsu Sawai, Yasuo Saso
  • Agricultural-horticultural fungicide employing 5H-1,3,4-thiadiazolo[3,2-a]p y
    Patent number: 4742063
    Abstract: It is disclosed that a class of 5H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one derivatives exhibit remarkable fungicidal activities for cucumber gray mold, cucumber downy mildew, Alternaria sooty spot of Chinese mustard, rice blast, etc.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: May 3, 1988
    Assignees: Kumiai Chemical Industry Co., Ltd., Ihara Chemical Industry Co., Ltd.
    Inventors: Yukio Tokunaga, Yoshiyuki Kojima, Shinichiro Maeno, Nobumitsu Sawai, Yasuo Saso