Patents by Inventor Pierantonio Martera

Pierantonio Martera 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 separating a high purity vinyl aromatic hydrocarbon from hydrocarbon mixtures containing the same
    Patent number: 3953300
    Abstract: Styrene of exceptional purity is separated from a mixture of hydrocarbons including it, xylenes, saturated and olefinic hydrocarbons and ethyl benzene by means of a two-step extractive distillation process through the use of a high boiling polar solvent such as N-formyl morpholine in admixture with an amount of water in the range of from 1% to 30% by weight.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: April 27, 1976
    Assignee: Snam Progetti, S.p.A.
    Inventors: Alessandro Ginnasi, Alessandro Vetere, Pierantonio Martera