Patents by Inventor Norbert K. Egger

Norbert K. Egger 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).

  • Fullerene derivatives, method of synthesizing them and their use
    Patent number: 5587476
    Abstract: The invention relates to an addition compound which is obtainable by reaction of a diamine of the formula I, ##STR1## where R.sup.1 is (C.sub.2 -C.sub.4)-alkylene or 1,2- or 1,3-cyclo-(C.sub.3 -C.sub.7)-alkylene andR.sup.2 and R.sup.3, which are identical or different, are (C.sub.1 -C.sub.3)-alkyl or hydrogen orR.sup.2 and R.sup.3 together are (C.sub.2 -C.sub.4)-alkylene, with fullerenes C.sub.60 and/or C.sub.70. The fullerene derivatives are useful as electrically conducting materials.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: December 24, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus-Dieter Kampe, Hans-Ulrich ter Meer, Norbert K. Egger, Martin A. Vogel