Patents by Inventor Bernhard Acksteiner

Bernhard Acksteiner 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).

  • Triiodinated 5-aminoisophthalic acid derivatives
    Patent number: 4367216
    Abstract: Compounds of the formula ##STR1## wherein R.sup.1 is hydroxy-C.sub.2-8 -alkyl containing 1-5 OH-groups;R.sup.2 is hydrogen, C.sub.1-4 -alkyl or R.sup.1 ;R.sup.3 and R.sup.4 can be identical or different, and each independently is hydrogen or C.sub.1-4 -alkyl; andX is straight chain or branched C.sub.2-12 alkylene interrupted by sulfur or selenium atoms, and, optionally, additionally interrupted by oxygen atoms, by a di(C.sub.1-4 -alkyl)silyl group or a tetra(C.sub.1-4 -alkyl)disiloxane group;are very useful as X-ray contrast media opaque agents, which can be employed even in lymphography.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: January 4, 1983
    Assignee: Schering Aktiengesellschaft
    Inventors: Wolfgang Mutzel, Hans-Martin Siefert, Ulrich Speck, Heinrich Pfeiffer, Paul-Eberhard Schulze, Bernhard Acksteiner