Patents by Inventor Piero Andreola

Piero Andreola 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).

  • Process for preparing shaped bodies with integrated polyurethane skin, and shaped bodies obtained by such process
    Patent number: 5223193
    Abstract: Process for preparing shaped bodies with integrated polyurethane skin, which process comprises:(a) charging to a closed mould for rotational moulding a first premixed reactive polyurethane system;(b) causing the mould to rotate, according to rotational moulding technology, for a long enough time to form a thin layer of partially polymerised material on the inner surface of said mould; and(c) discontinuing the rotation and charging to the mould a reactive material which will fill the inner mould hollow.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: June 29, 1993
    Assignee: ECP Enichem Polimeri s.r.l.
    Inventors: Eugenio Bianchin, Piero Andreola, Francesco Torre
  • Stable dispersions of polyols containing polyvinylchloride
    Patent number: 5173530
    Abstract: Stable dispersions of polyols having a viscosity lower than 10,000 mPa.times.sec and containing dispersed particles of polyvinylchloride, having a size within the range of from 1 to 10 micrometers and impregnated by the said polyols.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: December 22, 1992
    Assignee: Montedipe S.p.A.
    Inventors: Piero Andreola, Sauro Gaiba, Eugenio Bianchin, Carlo Mulas