Patents Assigned to SARL Kappa Biotech
  • Biodegradable ionic matrix of variable internal polarity with grafted polymer
    Patent number: 6346263
    Abstract: The present invention relates to a particulate biodegradable matrix comprising a biodegradable and hydrophilic core with a base of carbohydrate or polyol or polyamine matrix, cross-linked and derived in the mass by variable amounts of ionic groups; a hydrophilic polymer layer associated with the central core by chemical, for example ionic, interaction; and surface molecules or polymers grafted on the external polymer layer by covalent bonds.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: February 12, 2002
    Assignee: SARL Kappa Biotech
    Inventors: Philippe Mercier, Marianne Peyrot, Karim Ioualalen