Patents by Inventor Harumichi Aoki

Harumichi Aoki 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).

  • 3-pyrroline-2-one derivatives and herbicidal compositions containing same
    Patent number: 5409886
    Abstract: A herbicidal composition is here disclosed which exerts an excellent herbicidal activity and which is harmless to paddy rice.A 1-[1-methyl-1-(substituted phenyl)ethyl]-4,5-dimethyl-3-(substituted phenyl)-3-pyrroline-2-one derivative represented by the formula (I) ##STR1## (wherein X is a chlorine atom, fluorine atom or bromine atom; Y is a hydrogen atom, fluorine atom, chlorine atom or methoxy group; Z is a hydrogen atom, fluorine atom, bromine atom or chlorine atom; and Q is a hydrogen atom or fluorine atom)is a novel compound, and the herbicidal composition containing this compound as a herbicidally active ingredient has the strong activity and high selectivity as the herbicidal composition for paddy fields.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: April 25, 1995
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Koichi Moriyasu, Hideyuki Akieda, Harumichi Aoki, Makoto Suzuki, Shingo Matsuo, Yasunaga Iwasaki, Sadafumi Koda, Kanji Tomiya
  • 3-azabicyclo[3.1.0]hexane-2-one derivatives and herbicidal compositions containing them as herbicidally active ingredients
    Patent number: 5352655
    Abstract: A 3-azabicyclo[3.1.0]hexane-2-one derivative represented by the following formula (I), and a herbicidal composition containing the same as a herbicidally active ingredient: ##STR1## (wherein X is a halogen atom, an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms or a haloalkyl group having 1 to 3 carbon atoms; Y is a halogen atom or an alkyl group having 1 to 3 carbon atoms; R.sub.1 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; R.sub.2 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; m is an integer of 0 to 3; n is an integer of 0 to 2; and when m is 2 or 3, the groups represented by X may be identical or different, and when n is 2, the groups represented by Y may be identical or different).
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: October 4, 1994
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Koichi Moriyasu, Kanji Tomiya, Hideyuki Akieda, Harumichi Aoki, Makoto Suzuki, Yasunaga Iwasaki, Sadafumi Koda
  • Method for preparing pyrrolidine derivatives
    Patent number: 5290949
    Abstract: The present invention is directed to a method for preparing 3,4-trans-4-ethyl-1,3-disubstituted (substituted phenyl)pyrrolidine-2-one represented by the formula (1) ##STR1## which comprises the steps of dissolving 4-ethyl-1,3-disubstituted (substituted phenyl)-3-pyrroline-2-one in an inert solvent, and then reducing the same with sodium boron hydride in the presence of methanol.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: March 1, 1994
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kanji Tomiya, Koichi Moriyasu, Harumichi Aoki, Kengo Oda