Patents by Inventor Eberhard Oestreich

Eberhard Oestreich 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).

  • Alpha-lipoic acid with novel modification
    Patent number: 5994393
    Abstract: The invention is relative to a thioctic acid with a predominant amount of an enantiomer and a novel modification, in the case of which the X-ray powder diffractograms show a characteristic reflex in the range of 23.4 to 22.7.degree. 2 theta(Cu) which shifts in the direction of the smaller angular values as the enantiomer content increases.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: November 30, 1999
    Assignee: ASTA Medica Aktiengesellschaft
    Inventors: Thomas Beisswenger, Gunter Laban, Karl-Friedrich Landgraf, Eberhard Oestreich, Matthias Rischer