Patents by Inventor Ottilie E. E. Kehr-Dreher

Ottilie E. E. Kehr-Dreher 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).

  • Oral dosage unit form
    Patent number: 5422121
    Abstract: Coating agents comprising a liquid phase, a polysaccharide decomposable in the colon, such as locust bean gum or guar gum, and a film forming polymer preferably having hydrophilic groups, which agent, when used for the coating of oral dosage unit forms, give coatings of high mechanical strength which are first decomposed under the influence of glycosidic enzymes in the colon; oral dosage unit forms incorporating such agents.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: June 6, 1995
    Assignee: Rohm GmbH
    Inventors: Klaus Lehmann, Ottilie E. E. Kehr-Dreher, Giuseppe Di Pascale