Patents by Inventor Peter Geschwinder

Peter Geschwinder 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).

  • Carbonitriles
    Patent number: 4693841
    Abstract: Carbonitriles of the formula I ##STR1## wherein R.sup.1 and R.sup.2 are each an alkyl group having 1-12 C atoms and wherein one or two CH.sub.2 groups/can be groups which are not adjacent replaced by --O--, --O--CO--, --CO--O-- and/or --CH.dbd.CH--, andA.sup.1 is a H or ##STR2## is a group of the formula 1 ##STR3## wherein R.sup.3 has one of the meanings of R.sup.1, can be used as components of liquid crystal phases.
    Type: Grant
    Filed: November 29, 1985
    Date of Patent: September 15, 1987
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Reinhard Hittich, Georg Weber, Wolfgang Sucrow, Peter Geschwinder