Patents by Inventor Norma del V. Valencia

Norma del V. Valencia 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).

  • Catalyst system for selective hydrogenation of heteroaromatic sulfur-containing and nitrogen-containing compounds, and process for preparing and using same
    Patent number: 5981421
    Abstract: A catalyst system for selective hydrogenation of sulfur-containing and nitrogen-containing compounds of a heteroaromatic organic phase includes a mixture of a noble metal selected from Group VIII of the Periodic Table of Elements and a water-soluble ligand. A process for preparing the catalyst system and hydrogenation process using the catalyst system are also provided.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: November 9, 1999
    Assignee: Intevep, S.A.
    Inventors: Daniel E. Paez, Antida Andriollo, Roberto A. Sanchez-Delgado, Norma del V. Valencia, Roberto E. Galiasso, Francisco A. Lopez
  • Process for selective hydrogenation of heteroaromatic sulfur-containing and nitrogen-containing compounds
    Patent number: 5958223
    Abstract: A catalyst system for selective hydrogenation of sulfur-containing and nitrogen-containing compounds of a heteroaromatic organic phase includes a mixture of a noble metal selected from Group VIII of the Periodic Table of Elements and a water-soluble ligand. A process for preparing the catalyst system and hydrogenation process using the catalyst system are also provided.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: September 28, 1999
    Assignee: Intevep. S.A.
    Inventors: Daniel E. Paez, Antida Andriollo, Roberto A. Sanchez-Delgado, Norma del V. Valencia, Roberto E. Galiasso, Francisco A. Lopez
  • Catalyst system for selective hydrogenation of heteroaromatic sulfur-containing and nitrogen-containing compounds
    Patent number: 5753584
    Abstract: A catalyst system for selective hydrogenation of sulfur-containing and nitrogen-containing compounds of a heteroaromatic organic phase includes a mixture of a noble metal selected from Group VIII of the Periodic Table of Elements and a water-soluble ligand. A process for preparing the catalyst system and hydrogenation process using the catalyst system are also provided.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: May 19, 1998
    Assignee: Intevep, S.A.
    Inventors: Daniel E. Paez, Antida Andriollo, Roberto A. Sanchez-Delgado, Norma del V. Valencia, Roberto E. Galiasso, Francisco A. Lopez