Patents by Inventor Tomoko Tateno

Tomoko Tateno 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).

  • Benzene derivatives substituted with heterocyclic ring and herbicides containing same as active ingredients
    Patent number: 5464811
    Abstract: A benzene derivative substituted with a heterocyclic ring represented by the general formula: ##STR1## wherein R represents a cycloalkyl group having 3 to 8 carbon atoms, X represents a halogen atom, and Z represents ##STR2## in which said cycloalkyl group may be substituted with an alkyl group having 1 to 6 carbon atoms, a process for preparing the same, and a herbicidal agent comprising the above compound as an active ingredient are disclosed. The compound has an excellent effect in that the compound exhibits a markedly high herbicidal effect on weeds in the field and the paddy field at a low dose and yet exhibits markedly low noxious effects on main crops.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: November 7, 1995
    Assignees: Sagami Chemical Research Center, Chisso Corporation, Kaken Pharmaceutical Co., Ltd.
    Inventors: Kenji Hirai, Mitsuo Yamashita, Tomoko Tateno, Emiko Ejiri, Kikuko Harasawa, Yuichi Onji, Sadayuki Ugai, Shoin Nagato
  • Benzene derivatives substituted with heterocyclic ring, and herbicides containing same as active ingredients
    Patent number: 5424277
    Abstract: A benzene derivative substituted with a heterocyclic ring represented by the general formula: ##STR1## wherein R represents a cycloalkyl group having 3 to 8 carbon atoms, X represents a halogen atom, and Z represents ##STR2## in which said cycloalkyl group may be substituted with an alkyl group having 1 to 6 carbon atoms, a process for preparing the same, and a herbicidal agent comprising the above compound as an active ingredient are disclosed. The compound has an excellent effect in that the compound exhibits a markedly high herbicidal effect on weeds in the field and the paddy field at a low dose and yet exhibits markedly low noxious effects on main crops.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: June 13, 1995
    Assignees: Sagami Chemical Research Center, Chisso Corporation, Kaken Pharmaceutical Co.
    Inventors: Kenji Hirai, Mitsuo Yamashita, Tomoko Tateno, Emiko Ejiri, Kikuko Harasawa, Yuichi Onji, Sadayuki Ugai, Shoin Nagato
  • Methods of preparing fluorobenzene derivatives and related compounds
    Patent number: 5391807
    Abstract: Disclosed are fluorobenzene derivatives, which are important intermediates for producing herbicidal oxazolidinedione derivatives, and methods of producing them. The fluorobenzene derivatives include compounds of a formula (11): ##STR1## where X is a halogen atom, R.sup.3 is a nitro, amino or isocyanato group or R.sup.1 OCONH, and R.sup.1 is an alkyl or phenyl group. Via the intermediates of the invention, oxazolidinedione derivatives can be produced with high yield.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: February 21, 1995
    Assignees: Sagami Chemical Research Center, Kaken Pharmaceutical Co., Ltd.
    Inventors: Kenji Hirai, Tomoyuki Yano, Mitsuo Yamashita, Emiko Ejiri, Tomoko Tateno, Kiyomi Aizawa
  • Fluorobenzene derivatives
    Patent number: 5344953
    Abstract: Disclosed are fluorobenzene derivatives, which are important intermediates for producing herbicidal oxazolidinedione derivatives, and methods of producing them. The fluorobenzene derivatives include compounds of a formula (11): ##STR1## where X is a halogen atom, R.sup.3 is a nitro, amino or isocyanato group or R.sup.1 OCONH, and R.sup.1 is an alkyl or phenyl group. Via the intermediates of the invention, oxazolidinedione derivatives can be produced with high yield.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: September 6, 1994
    Assignees: Sagami Chemical Research Center, Kaken Pharmaceutical Co., Ltd.
    Inventors: Kenji Hirai, Tomoyuki Yano, Mitsuo Yamashita, Emiko Ejiri, Tomoko Tateno, Kiyomi Aizawa
  • Bis(fluorophenyl) carbonate derivatives
    Patent number: 5281742
    Abstract: Disclosed are fluorobenzene derivatives, which are important intermediates for producing herbicidal oxazolidinedione derivatives, and methods of producing them. The fluorobenzene derivatives include compounds of a formula (11): ##STR1## where X is a halogen atom, R.sup.3 is a nitro, amino or isocyanato group or R.sup.1 OCONH, and R.sup.1 is an alkyl or phenyl group. Via the intermediates of the invention, oxazolidinedione derivatives can be produced with high yield.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: January 25, 1994
    Assignees: Sagami Chemical Research Center, Kaken Pharmaceutical Co., Ltd.
    Inventors: Kenji Hirai, Tomoyuki Yano, Mitsuo Yamashita, Emiko Ejiri, Tomoko Tateno, Kiyomi Aizawa