Patents by Inventor C.F. Spiess & Sohn

C.F. Spiess & Sohn 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).

  • Combating pests with di-[2-thioureido-(N-alkoxycarbonyl)-N-phenylureido]-compounds
    Patent number: 4133892
    Abstract: Di[2-thioureido-(N-Alkoxycarbonyl)-N-phenylureides] of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen, or an alkoxy or alkyl radical having 1 to 4 C atoms,R.sub.2 is an alkyl radical having 1 to 4 C atoms, andR.sub.3 is an alkylene radical having 3 to 10 C atoms, or a cycloalkylene or phenylene radical having 6 to 20 carbon atoms,Are produced by reacting a 2-(3-alkoxycarbonyl-2-thioureido)aniline of the formula ##STR2## with a diisocyanate of the formulaONC--(R.sub.3)--CNO.the compounds are active against fungi and other pests such as mites.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: January 9, 1979
    Assignee: Norddeutsche Affinerie
    Inventors: Werner Perkow, Hans Hopp, Walter Ingwersen, C.F. Spiess & Sohn