Patents by Inventor Thomas Czigler

Thomas Czigler 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).

  • Hydrolytically cleavable active ingredient derivative compounds, hair treatment compositions containing them and hair treatment methods
    Patent number: 5972323
    Abstract: The new active ingredient derivative compounds have the formula (I) ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and are each an unsubstituted or substituted alkyl group, Y is an unsubstituted or substituted alkylene group, R is an active ingredient group which, prior to ester formation, has at least one OH group and A.sup.- is an anion. A process for making the compounds of formula (I) is described. Hair treatment compositions containing these compounds and methods of treating hair with these hair treatment compositions are also described.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: October 26, 1999
    Assignee: Wella AG
    Inventors: Gunther Lang, Rudolf Bimczok, Thomas Czigler, Thomas Kripp