Patents by Inventor Viviana De Malde

Viviana De Malde 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).

  • Inhibition of steel corrosion
    Patent number: 5354507
    Abstract: Compounds of general formula ##STR1## wherein: R is a linear or branched C.sub.1 -C.sub.20 alkyl radical, m is either 0 or 1; n has a value of from 1 to 10, are corrosion inhibitors, suitable for inhibiting the general corrosion and the stress brittlening caused by hydrogen sulfide (SSC), in an acidic environment, in the presence, or absence of carbon dioxide, of medium-and high-strength manganese steels and low-alloy steels, commonly used in petrochemical facilities and in bore drilling, transport and processing systems for natural gas or petroleum.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: October 11, 1994
    Assignee: Eniricerche S.p.A
    Inventors: Viviana De Malde, Luigi Rivola, Arnaldo Roggero, Alberto Gandini