Patents Assigned to N.V. Sopar S.A.
  • Therapeutic agents in the form of submicroscopic particles against Leishmaniasis and pharmaceutical compositions containing them
    Patent number: 4844900
    Abstract: The invention relates to new therapeutic agents against Leishmaniasis.These therapeutic agents consist of submicroscopic particles whose diameter is less than 500 nanometers, the particles being obtained by the micellar polymerization of an alkyl cyanoacrylate in which the alkyl chain contains from 1 to 12 carbon atoms.The therapeutic agents according to the invention may be administered parenterally.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: July 4, 1989
    Assignee: N.V. Sopar S.A.
    Inventors: Antonio Osuna Carillo de Albornoz, Santiago Castanys
  • Process for preparing biodegradable submicroscopic particles containing a biologically active substance and their use
    Patent number: 4489055
    Abstract: Biodegradable particles, with a diameter smaller than 500 nanometers, formed by the micellar polymerization of an alkyl-cyano-acrylate where the term "alkyl" means a lower alkyl radical having 1 to 4 carbon atoms and containing a biologically active substance. Also provided are processes for making pharmaceutical compositions containing the biodegradable particles and using the particles in pharmaceutical and diagnostic applications.
    Type: Grant
    Filed: February 17, 1982
    Date of Patent: December 18, 1984
    Assignee: N.V. Sopar S.A.
    Inventors: Patrick Couvreur, Michel Roland, Peter Speiser