Patents by Inventor Shigeo Kohama

Shigeo Kohama 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).

  • Herbicidal novel 2-alkoxyaminosulfonyl-benzene-sulfonylureas
    Patent number: 4626273
    Abstract: Novel herbicides are produced by the novel reaction ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 each independently is lower alkyl of 1 to 4 carbon atoms, andM is an alkali metal atom.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: December 2, 1986
    Assignee: Nihon Tokushu Noyaku Seizo K.K.
    Inventors: Kozo Shiokawa, Toshio Goto, Atsumi Kamochi, Koichi Moriya, Shigeo Kohama
  • Herbicidal sulfonylguanidine derivatives
    Patent number: 4619688
    Abstract: Selectively herbicidal compounds of the formula ##STR1## in which R.sup.1 is a hydrogen atom or the group ##STR2## R.sup.2 is a hydroxy group, a lower alkoxy group or a di-lower alkylamino group,R.sup.3 and R.sup.4 each independently is a lower alkyl group or a lower alkoxy group,X is a lower alkoxy group, a lower alkylamino group or a morpholino group, andY is N or CH.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: October 28, 1986
    Assignee: Nihon Tokushu Noyaku Seizo K.K.
    Inventors: Kozo Shiokawa, Koichi Moriya, Toshio Goto, Atsumi Kamochi, Shigeo Kohama
  • Substituted phenylsulfonyl guanidine herbicides and intermeditates therefor
    Patent number: 4559079
    Abstract: Substituted phenylsulfonyl guanidines of the formula ##STR1## in which R.sup.1 is a phenyl or phenoxy group,R.sup.2 and R.sup.3 each independently is a lower alkyl or lower alkoxy group, andR.sup.4 is a hydrogen atom, a lower alkyl group or a lower alkoxy group,which possess herbicidal activity. Intermediates therefor of the formulas ##STR2## are new and also herbicidal. Intermediates of the formulas ##STR3## are also new.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: December 17, 1985
    Assignee: Nihon Tokushu Noyaku Seizo K.K.
    Inventors: Kozo Shiokawa, Koichi Moriya, Toshio Goto, Atsumi Kamochi, Shigeo Kohama