Patents by Inventor Fernando Riva

Fernando Riva 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).

  • Macromolecular materials suitable for forming antithrombogenic prosthesis and artificial organs and process for preparing same
    Patent number: 4093677
    Abstract: Novel block copolymers suitable to manufacture permanently antithrombogenic prosthetic devices are obtained by first preparing a polyamide-amine prepolymer ##STR1## WHEREIN R.sub.1 and R.sub.2 are alkyl or hydroxy-alkyl radicals with 1-6 carbon atoms, R.sub.3 and R.sub.4 are alkyl radicals with 1-6 carbon atoms, R.sub.5 is an alkenyl radical with 1-12 carbon atoms, or together with R.sub.1, R.sub.2 and R.sub.3, R.sub.4 respectively and the nitrogen atoms to which it is linked, it forms an unsubstituted or substituted piperazine ring and then polymerizing at least one monomer suitable to form thermoplastic addition or condensation polymers in the presence of the polyamide-amine prepolymer.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: June 6, 1978
    Inventors: Paolo Ferruti, Ezio Martuscelli, Fernando Riva, Luciano Provenzale