Patents by Inventor Yoji Hirohara

Yoji Hirohara 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).

  • Substituted pyrazole derivatives, production process thereof, and herbicide compositions containing the derivatives
    Patent number: 7192906
    Abstract: Substituted pyrazole compounds of the formula (1). The compounds are synthesized from a pyrazole derivative and a haloalkyleneoxime ester derivative, and have excellent herbicidal effects.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: March 20, 2007
    Assignee: SDS Biotech K.K.
    Inventors: Yoji Hirohara, Eiji Ikuta, Sayo Osanai, Hideki Nakashima, Teruhiko Ishii
  • Novel substituted pyrazole derivative, process for producing the same, and herbicidal composition containing the same
    Publication number: 20050014649
    Abstract: Substituted pyrazole compounds of the formula (1). The compounds are synthesized from a pyrazole derivative and a haloalkyleneoxime ester derivative, and have excellent herbicidal effects. Herbicide compositions containing the substituted pyrazole derivatives or hydrazide derivatives thereof as active ingredients possess wide herbicidal spectra, work sufficiently in small dosages, and are sufficiently safe for certain important crops.
    Type: Application
    Filed: December 18, 2002
    Publication date: January 20, 2005
    Inventors: Yoji Hirohara, Eiji Ikuta, Sayo Osanai, Hideki Nakashima, Teruhiko Ishii
  • Herbicide containing substituted pyrazole derivative as active ingredient
    Patent number: 6809065
    Abstract: A herbicide composition containing a substituted pyrazole derivative represented by the formula (I) set forth below as an active ingredient is disclosed, more particularly, a herbicide composition having a wide herbicidal spectrum, applicable in a small dosage with sufficient safety to certain important crops. The herbicide composition of the invention containing the substituted pyrazole derivative represented by the formula (I) as an active ingredient has a wide herbicidal spectrum, exerts an excellent herbicidal effect even in a small dose, and shows sufficient safety with respect to a number of important crops, such as rice, wheat and soybeans.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: October 26, 2004
    Assignee: SDS Biotech K.K.
    Inventors: Yoji Hirohara, Eiji Ikuta, Takuo Kimura
  • Herbicide containing substituted pyrazole derivative as active ingredient
    Publication number: 20040033898
    Abstract: The present invention provides a herbicide composition containing a substituted pyrazole derivative represented by the following formula (I) as an active ingredient, more particularly, a herbicide composition having a wide herbicidal spectrum, applicable in a small dose with sufficient safety to certain important crops. The herbicide composition of the invention containing the substituted pyrazole derivative represented by the formula (I) as an active ingredient had a wide herbicidal spectrum, exerted an excellent herbicidal effect even in a small dose, showing sufficient safety to some important crops, such as rice, wheat and soybean.
    Type: Application
    Filed: March 12, 2003
    Publication date: February 19, 2004
    Inventors: Yoji Hirohara, Eiji Ikuta, Takuo Kimura