Patents by Inventor Giovanni Castiglioni

Giovanni Castiglioni 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).

  • Low haze transparent compositions and processes for preparing them
    Patent number: 5183851
    Abstract: This invention relates to low haze impact-resistant transparent compositions, comprising:(a) 40-99% by weight of a thermoplastic resin based on homopolymers and/or copolymers of alkyl-methacrylates with minor amounts of alkyl-acrylates, wherein the alkyl group contains from 1 to 8 carbon atoms, and(b) 60-1% by weight of a polymer having a multi-layer structure, based on elastomers arranged sequentially to thermoplastic resins as defined in step (a).
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: February 2, 1993
    Assignee: ELF Atochem Italia S.r.l.
    Inventors: Francesco Visani, Carlo Tavazzani, Giuseppe Ajroldi, Giovanni Castiglioni