Patents by Inventor Giancarlo Caretti

Giancarlo Caretti 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 the continuous production of phtalodinitrile
    Patent number: 4883893
    Abstract: The present invention relates to a process for the continuous production of isophthalodinitrile or terephthalodinitrile by reaction in steam phase, on a fixed bed of a dehydration catalyst, of the correspondent bis(trichloromethyl)benzenes with ammonia optionally in the presence of aqueous steam.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: November 28, 1989
    Assignee: Caffaro s.p.a. Societa per l'Industria Chimica Ed Elettro Chimica
    Inventors: Enrico Pontoglio, Sandro Parodi, Giancarlo Caretti
  • Process for the production in continuous of phthalodinitrile
    Patent number: 4883894
    Abstract: The present invention relates to a process for the production in continuous of isophthalodinitrile or terephthalodinitrile by simultaneous amidation and dehydration of the respective acid chlorides in steam phase on a fixed bed of a dehydration catalyst.
    Type: Grant
    Filed: March 24, 1987
    Date of Patent: November 28, 1989
    Assignee: Caffaro s.p.a. Societa per l'Industria Chimica ed Elettrochimica
    Inventors: Enrico Pontoglio, Sandro Parodi, Giancarlo Caretti
  • Process for the continuous production of isophthalodinitrile
    Patent number: 4806672
    Abstract: The present invention relates to a process for the continuous production of isophthalodinitrile by amidation and simultaneous dehydration of the dimethyl ester of isophthalic acid in vapor phase on the fixed bed of a dehydration catalyst.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: February 21, 1989
    Assignee: Caffaro S.p.A. Societa Per l'Industria Chimica ed Electtrochimica
    Inventors: Enrico Pontoglio, Sandro Parodi, Giordano Donelli, Giancarlo Caretti