Patents by Inventor Kurt Haidinger

Kurt Haidinger 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).

  • Process for the preparation of arylhydantoins
    Patent number: 5436256
    Abstract: Process for the preparation of 5-arylhydantoins by reaction of an allantoin acid alkyl ester with an aryl compound in a concentrated inorganic acid at temperatures from room temperature to 150.degree. C., with or without a phase transfer agent.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: July 25, 1995
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Wolfram Hendel, Engelbert Kloimstein, Klaus Fitzinger, Antonia Viehbock, Kurt Haidinger