Patents by Inventor Raphael Radai

Raphael Radai 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).

  • Controlled release oral drug delivery system
    Patent number: 6692766
    Abstract: The present invention relates to a controlled release drug delivery system comprising a drug which is susceptible to enzymatic degradation by enzymes present in the intestinal tract; and a polymeric matrix which undergoes erosion in the gastrointestinal tract comprising a hydrogel-forming polymer selected from the group consisting of (a) polymers which are themselves capable of enhancing absorption of said drug across the intestinal mucosal tissues and of inbihiting degradation of said drug by intestinal enzymes; and (b) polymers which are not themselves capable of enhancing absorption of said drug across the intestinal mucosal tissues and of inhibiting degradation of said drug by intestinal enzymes; wherein when the matrix comprises a polymer belonging to group (b) the delivery system further comprises an agent which enhances absorption of said drug across the intestinal mucosal tissues and/or an agent which inhibits degradation of said drug by intestinal enzymes and when the matrix comprises a polymer belon
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: February 17, 2004
    Assignee: Yissum Research Development Company of The Hebrew University of Jerusalem
    Inventors: Abraham Rubinstein, Raphael Radai, Michael Friedman, Boaz Tirosh, Muhammad Baluom, Taher Nassar