Patents by Inventor Tomoko Hiruta

Tomoko Hiruta 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).

  • Variety of Drechslera monoceras effective for control of barnyard grass
    Patent number: 5498592
    Abstract: Described are Drechslera monoceras var. microsporus strains, that is, new microorganism strains which show herbicidal effects against all varieties of barnyard grass, i.e., Echinochloa spp. as weed even at temperatures as low as 15.degree. C. but does not give any influence to cultivation crops such as rice; weed control compositions against barnyard grass, said compositions each containing one of the microorganism strains as an effective ingredient and having high safety and selectivity; and a barnyard grass control method employing at least one of the microorganism strains. Combined use of at least one of the microorganism strains with a chemical herbicide makes it possible to substantially reduce their dosages compared with those required when they are singly applied.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: March 12, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masatoshi Gohbara, Kenichi Yamaguchi, Tatsuo Shinmi, Emi Shinmi, Kazunori Takanaka, Tomoko Hiruta
  • Weed control compositions containing Drechslera monoceras and additional herbicidal agents
    Patent number: 5498591
    Abstract: Described are Drechslera monoceras var. microsporus strains, that is, new microorganism strains which show herbicidal effects against all varieties of barnyard grass, i.e., Echinochloa spp. as weed even at temperatures as low as 15.degree. C. but does not give any influence to cultivation crops such as rice; weed control compositions against barnyard grass, said compositions each containing one of the microorganism strains as an effective ingredient and having high safety and selectivity; and a barnyard grass control method employing at least one of the microorganism strains. Combined use of at least one of the microorganism strains with a chemical herbicide makes it possible to substantially reduce their dosages compared with those required when they are singly applied.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: March 12, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masatoshi Gohbara, Kenichi Yamaguchi, Tatsuo Shinmi, Emi Shinmi, Kazunori Takanaka, Tomoko Hiruta
  • Variety of Drechslera monoceras, weed control compositions containing the same as an effective ingredient and weed control methods using the same
    Patent number: 5434121
    Abstract: Described are Drechslera monoceras var. microsporus strains, that is, new microorganism strains which show herbicidal effects against all varieties of barnyard grass, i.e., Echinochloa spp. as weed even at temperatures as low as 15.degree. C. but does not give any influence to cultivation crops such as rice; weed control compositions against barnyard grass, said compositions each containing one of the microorganism strains as an effective ingredient and having high safety and selectivity; and a barnyard grass control method employing at least one of the microorganism strains. Combined use of at least one of the microorganism strains with a chemical herbicide makes it possible to substantially reduce their dosages compared with those required when they are singly applied.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: July 18, 1995
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Masatoshi Gohbara, Kenichi Yamaguchi, Tatsuo Shinmi, Emi Shinmi, Kazunori Takanaka, Tomoko Hiruta