Patents by Inventor Jose Carlos Duarte Macedo

Jose Carlos Duarte Macedo 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).

  • Modified aluminas and the use thereof in FCC catalysts
    Patent number: 6551572
    Abstract: A modified alumina is useful as metals passivator in fluidizable catalytic cracking catalysts. The modified alumina is prepared from a hydrated alumina, e.g., gibbsite, which is reacted with a low-molecular weight organic acid, e.g., acetic acid, forming aluminum salts. Calcination of the modified alumina results in decomposition of the aluminum salt.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: April 22, 2003
    Assignee: Akzo Nobel N.V.
    Inventor: Jose Carlos Duarte Macedo
  • Modified aluminas and the use thereof in FCC catalysts
    Publication number: 20020036157
    Abstract: A modified alumina is useful as metals passivator in fluidizable catalytic cracking catalysts. The modified alumina is prepared from a hydrated alumina, e.g., gibbsite, which is reacted with a low-molecular weight organic acid, e.g., acetic acid, forming aluminum salts. Calcination of the modified alumina results in decomposition of the aluminum salt.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 28, 2002
    Inventor: Jose Carlos Duarte Macedo
  • Modified aluminas and the use thereof in FCC catalysts
    Patent number: 6319393
    Abstract: A modified alumina is useful as metals passivator in fluidizable catalytic cracking catalysts. The modified alumina is prepared from a hydrated alumina, e.g., gibbsite, which is reacted with a low-molecular weight organic acid, e.g., acetic acid, forming aluminum salts. Calcination of the modified alumina results in decomposition of the aluminum salt.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: November 20, 2001
    Assignee: Petroleo Brasiliero S.A., Petrobras
    Inventor: Jose Carlos Duarte Macedo