Patents by Inventor Karl Eschle

Karl Eschle 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).

  • N-(Alkylhydrobenzyl)-alkylthio- and mercapto-acetamides
    Patent number: 4055599
    Abstract: The present invention provides carboxylic acid amides of the formula ##STR1## in which X represents methyl or tertiary butyl, m is the integer 1 or 2, Q represents hydrogen, alkyl, alkylidene, cycloalkylidene, substituted methylene, alkylene, alkenylene or a 3,4,5 or 6-valent saturated aliphatic hydrocarbon radical and p represents an integer which corresponds to the valency of the radical Q. These carboxylic acid amides are suitable for stabilizing organic materials sensitive to oxidations.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: October 25, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Helmut Huber-Emden, Karl Eschle, Arthur Maeder