Patents by Inventor Susi Vogt

Susi Vogt 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 3-hydroxy benzodiazepinones
    Patent number: 4412952
    Abstract: Conversion of 3-acyloxy-benzodiazepin-2-ones into corresponding 3-hydroxy benzodiazepin-2-ones is carried out efficiently with potassium hydroxide or potassium alkoxide as catalyst in lower alkanol solvent at a pH of 11-11.5. The final products, which include temazepam, are useful as sleep inducers.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: November 1, 1983
    Assignee: Sandoz, Inc.
    Inventors: Goetz E. Hardtmann, Oljan Repic, Susi Vogt