Patents Examined by Robert C. Wittenbaugh
  • Substituted ureas and their use for controlling undesirable plant growth
    Patent number: 4588434
    Abstract: Substituted ureas of the formula ##STR1## where R.sup.1 is hydrogen or alkyl, R.sup.2 is hydrogen, alkyl, alkoxy, alkenyl, alkynyl, unsubstituted or substituted cycloalkyl or unsubstituted or substituted phenyl and R.sup.3 and R.sup.4 are each hydrogen, halogen or a radical --CO--S--R, with the proviso that one or both of the substituents R.sup.3 and R.sup.4 are the radical --CO--S--R, are used for controlling undesirable plant growth.
    Type: Grant
    Filed: December 7, 1983
    Date of Patent: May 13, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Arno Lange, Bruno Wuerzer
  • .alpha.-Phenoxy-thiolpropionic acids
    Patent number: 4233060
    Abstract: The present invention concerns new .alpha.-phenoxy-thiolpropionic acids and salts of the formula ##STR1## wherein R is hydrogen a metal cation or the cation of an amino- or ammonio-group, Z is a substituted phenyl or a substituted pyrid-2-yl radical.These compounds have herbicidal activity by themselves but can be used as intermediats for the synthesis of more active derivatives.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: November 11, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Beat Bohner, Otto Rohr, Hermann Rempfler, Georg Pissiotas