Patents by Inventor Claudio Spaggiari

Claudio Spaggiari 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 recovering phenol from a rectification purge
    Patent number: 4973766
    Abstract: A process for recovering phenol from a rectification purge containing various organic foreign matters, which includes the steps of subjecting the purge to an extraction operation, using, as an extracting solvent, an aqueous solution of an alkali metal phenate.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: November 27, 1990
    Assignee: Montedipe S.r.l.
    Inventors: Renzo Penzo, Paolo Reggiani, Claudio Spaggiari