Patents by Inventor Jose Augusto da Costa Paes

Jose Augusto da Costa Paes 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).

  • Heteropoly salts or acid salts deposited in the interior of porous supports
    Patent number: 5866739
    Abstract: The present invention relates to a catalyst composition, its methods of preparation and its use in aromatic alkylation processes. The composition comprises a heteropoly compound selected from the group consisting of heteropoly salts and heteropolyacid salts deposited in the interior of a porous support selected from the group consisting of silica, titania, and zirconia, wherein said salt of said heteropoly salt and said heteropolyacid salt is selected from the group consisting of ammonium, cesium, potassium, and rubidium salts and mixtures thereof, and wherein said heteropoly salt and said heteropolyacid salt are formed with a heteropolyacid selected from the group consisting of 12-tungstophosphoric, 12-tungstosilicic, 12-molybdophosphoric, and 12-molybdosilicic acid.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: February 2, 1999
    Assignee: Exxon Research and Engineering Company
    Inventors: Stuart Leon Soled, Jose Augusto da Costa Paes, Antonio Gutierrez, Sabato Miseo, William E. Gates, Kenneth L. Riley