Patents by Inventor Karl Reithmayr

Karl Reithmayr 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).

  • Patent number: 4344933
    Abstract: Composition which has a prolonged broncholytic and tocolytic activity and consists of a compound of N,N'-bis-[2-(3',4'-dihydroxyphenyl)-2-hydroxyethyl]-hexamethylenediamine with a polystyrene which is crosslinked with divinylbenzene, contains sulphonic acid radicals as anchor groups and has a degree of crosslinking of 2-5%, and a process for the preparation of this composition by treating the proton form of the resin with an aqueous solution of a bis-salt of the base.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: August 17, 1982
    Assignee: Chemie Linz Aktiengesellschaft
    Inventors: Annemarie Siegl, Christian Knopp, Karl Reithmayr