Patents by Inventor Atsuko Murata

Atsuko Murata 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).

  • Oxazolidinedione derivatives, method of producing the derivatives, and herbicides containing the derivatives
    Patent number: 4983751
    Abstract: Disclosed are novel oxazolidinedione derivatives expressed by the following formula: ##STR1## (R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 being defined in the specification), a method of producing the derivatives and herbicides containing the derivatives as an active ingredient. Carbonate esters which are intermediates in the method of producing the oxazolidinedione derivatives are also disclosed.These novel derivatives exhibit excellent weed-killing activity for harmful weeds and low phytotoxicity for crops.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: January 8, 1991
    Assignees: Sagami Chemical Research Center, Chisso Corporation, Kaken Pharmaceutical Co. Ltd.
    Inventors: Kenji Hirai, Takamasa Futikami, Atsuko Murata, Hiroaki Hirose, Masahiro Yokota, Shoin Nagato
  • Oxazolidinedione derivatives, method of producing the derivatives, and herbicides containing the derivatives
    Patent number: 4818272
    Abstract: Disclosed are novel oxazolidinedione derivatives expressed by the following formula: ##STR1## (R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 being defined in the specification), a method of producing the derivatives and herbicides containing the derivatives as an active ingredient.These novel derivatives exhibit excellent weed-killing activity for harmful weeds and low phytotoxicity for crops.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: April 4, 1989
    Assignees: Sagami Chemical Research Center, Chisso Corporation, Kaken Pharmaceutical Co. Ltd.
    Inventors: Kenji Hirai, Takamasa Futikami, Atsuko Murata, Hiroaki Hirose, Masahiro Yokota, Shoin Nagato