Patents by Inventor Tetsuji Izumi

Tetsuji Izumi 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).

  • Spiro-benzyl-3-substituted pyridines
    Patent number: 5062883
    Abstract: Fungicidal and herbicidal novel 3-substituted pyridines of the formula ##STR1## wherein A represents oxygen or sulfur,B represents oxygen, sulfur or sulfinyl,R.sup.1 represents hydrogen, halogen, alkyl or haloalkyl,R.sup.2 represents hydrogen, halogen, alkyl, phenyl, haloalkyl or phenoxy,l is 0 or 1,m is an integer from 1 to 4,n is an integer from 1 to 5, andW represents ##STR2## in which R.sup.3 and R.sup.4 each represent hydrogen, hydroxyalkyl, alkoxyalkyl, alkyl, benzyloxyalkyl, haloalkyl or carboxyalkyl, orR.sup.3 and R.sup.4 form a hydrocarbon ring having 3 to 12 carbon atoms in total together with the carbon atoms to which they are bonded, andR.sup.5, R.sup.6, R.sup.7 and R.sup.8 each represent hydrogen, alkyl or hydroxyalkyl, provided that none of R.sup.1, R.sup.2, R.sup.3, and R.sup.
    Type: Grant
    Filed: May 3, 1990
    Date of Patent: November 5, 1991
    Assignee: Nihon Tokushu Noyaku Seizo K.K.
    Inventors: Yoshio Kurahashi, Toshio Goto, Kunihiro Isono, Yoshinori Kitagawa, Tetsuji Izumi, Toshihito Kondo, Takayo Sato
  • 2-aryl-2-(3-pyridyl)-1,3-dioxalanes, dithiolanes and -oxa-thiolanes having herbicidal and pesticidal activity
    Patent number: 5000778
    Abstract: Fungicidal and herbicidal novel 3-substituted pyridines of the formula ##STR1## wherein A represents oxygen or sulfur, B represents oxygen, sulfur or sulfinyl,R.sup.1 represents hydrogen, halogen, alkyl or haloalkyl,R.sup.2 represents hydrogen, halogen, alkyl, phenyl, haloalkyl or phenoxy,l is 0 or 1,m is an integer from 1 to 4,n is an integer from 1 to 5, andw represents ##STR2## in which R.sup.3 and R.sup.4 each represent hydrogen, hydroxyalkyl, alkoxyalkyl, alkyl, benzyloxyalkyl, haloalkyl or carboxyalkyl, orR.sup.3 and R.sup.4 form a hydrocarbon ring having 3 to 12 carbon atoms in total together with the carbon atoms to which they are bonded, andR.sup.5, R.sup.6, R.sup.7 and R.sup.8 each represent hydrogen, alkyl or hydroxyalkyl, provided that none of R.sup.1, R.sup.2, R.sup.3, and R.sup.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: March 19, 1991
    Assignee: Nihon Tokushu Noyaku Seizo, K.K.
    Inventors: Yoshio Kurahashi, Toshio Goto, Kunihiro Isono, Yoshinori Kitagawa, Tetsuji Izumi, Toshihito Kondo, Takayo Sato
  • Fungicidal 2-(-3-pyridyl)-1,3-dioxanes
    Patent number: 4940483
    Abstract: Fungicidal and herbicidal novel 3-substituted pyridines of the formula ##STR1## wherein A represents oxygen or sulfur,B represents oxygen, sulfur or sulfinyl,R.sup.1 represents hydrogen, halogen, alkyl or haloalkyl,R.sup.2 represents hydrogen, halogen, alkyl, phenyl, haloalkyl or phenoxy,l is 0 or 1,m is an integer from 1 to 4,n is an integer from 1 to 5, andW represents ##STR2## in which R.sup.3 and R.sup.4 each represent hydrogen, hydroxyalkyl, alkoxyalkyl, alkyl, benzyloxyalkyl, haloalkyl or carboxyalkyl, orR.sup.3 and R.sup.4 form a hydrocarbon ring having 3 to 12 carbon atoms in total together with the carbon atoms to which they are bonded, andR.sup.5, R.sup.6, R.sup.7 and R.sup.8 each represents hydrogen, alkyl or hydroxyalkyl, provided that none of R.sup.1, R.sup.2, R.sup.3, and R.sup.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: July 10, 1990
    Assignee: Nihon Tokushu Noyaku Seizo K.K.
    Inventors: Yoshio Kurahashi, Toshio Goto, Kunihiro Isono, Yoshinori Kitagawa, Tetsuji Izumi, Toshihito Kondo, Takayo Sato