Patents by Inventor Johannes G. J. Egberink

Johannes G. J. Egberink 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).

  • Pharmaceutical preparation for obtaining a highly viscose hydrogel or suspension
    Patent number: 4818517
    Abstract: The invention relates to a pharmaceutical preparation for obtaining a highly viscose hydrogel or highly viscose suspension which is suitable to be introduced by means of an injection syringe into body cavities, and which hydrogel or suspension contains at least a drug, a polymer which is insoluble or sparingly soluble in water but has the capability of swelling in water and a watersoluble thickening agent in a relatively low quantity.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: April 4, 1989
    Assignee: Akzo N.V.
    Inventors: Bobby L. S. Kwee, Johannes G. J. Egberink