Patents by Inventor Yoko Torisu

Yoko Torisu 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).

  • Insecticidal and/or acaricidal composition
    Patent number: 5091183
    Abstract: An insecticidal and/or acaricidal composition comprising as active ingredients 2-methyl-4-oxo-3-(2-propynyl)cyclopent-2-enyl chrysanthemate and a phenoxybenzyl ester compound having the formula [I], ##STR1## wherein R.sup.1 is hydrogen or cyano, R.sup.2 is hydrogen or fluorine, and X is chlorine or bromine, is markedly effective against insect pests having a low sensitivity to pyrethroid and acarine pests which cannot be effectively controlled by the use of a single agent.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: February 25, 1992
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshihiko Yano, Noritada Matsuo, Yoko Torisu, Kazunobu Dohara
  • Novel carboxylic acid esters and insecticides containing them as an active ingredient
    Patent number: 5019595
    Abstract: This invention relates to a novel carboxylic acid esters represented by the formula (I) below and insecticides containing them as an active ingredient, ##STR1## wherein R represents a C.sub.1-5 alkyl group, a C.sub.3-6 cycloalkyl group, a C.sub.3-6 alkenyl group, a C.sub.3-6 alkynyl group or a C.sub.1-5 haloalkyl group.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: May 28, 1991
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Toshihiko Yano, Yoko Torisu, Hiroko Sekihachi, Noritada Matsuo, Tohei Takagaki, Kazunori Tsushima
  • Novel carboxylic acid esters, methods for producing them and insecticides and/or acaricides containing them as an active ingredient
    Patent number: 4985457
    Abstract: This invention relates to novel carboxylic acid esters represented by the formula (I) below, methods for their production and insecticides and/or acaricides containing them as an active ingredient, ##STR1## wherein R.sup.1 represents a C.sub.1-5 alkyl group, a C.sub.2-4 alkenyl group or a C.sub.2-4 alkynyl group; R.sup.2 represents a fluorine atom or a methyl group; and R.sup.3 represents a hydrogen atom or a methyl group.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: January 15, 1991
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroko Kishino, Noritada Matsuo, Tohei Takagaki, Kazunori Tsushima, Toshihiko Yano, Yoko Torisu
  • Hydrazone compound and production therefor, and an insecticidal composition containing the same
    Patent number: 4980373
    Abstract: A compound of the formula: ##STR1## which is useful as an insecticide.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: December 25, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hirosi Kisida, Kenichi Mikitani, Yoko Torisu, Tomotoshi Imahase, Sumio Nishida