Patents by Inventor Luiz Antonio Fernandes

Luiz Antonio Fernandes 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).

  • Defoamer and methods of use thereof
    Patent number: 6448298
    Abstract: Disclosed are methods and compositions for defoaming alcoholic fermentations. An aqueous composition of polydimethylsiloxane, an ethylene oxide/propylene oxide block copolymer and a silicone/silica blend is employed to treat the fermentation for foaming.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: September 10, 2002
    Assignee: BetzDearborn, Inc.
    Inventors: Raimundo Romualdo, Claudio Cândido Luiz, Luiz Antonio Fernandes
  • Neutral phosphate pre-coagulant composition for clarification in white sugar production
    Patent number: 6159302
    Abstract: Methods and compositions for clarifying sugar are disclosed. Compositions of a condensation polymer of a dihaloalkyl compound and a dialkylamine compound and a phosphate compound are effective at clarifying the sugar syrup during its production as well as reducing the total amount of phosphate used.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: December 12, 2000
    Assignee: BetzDearborn Inc.
    Inventors: Carlos Roberto Xavier, Claudio Candido Luiz, Luiz Antonio Fernandes
  • Methods for clarifying sugar solutions
    Patent number: 6146465
    Abstract: An improved process for clarifying sugar syrup in the flotation system of a sugar making operation. Neutral phosphate-based compounds are added to the flotation system to aid in clarifying the sugar syrup. The use of the neutral phosphate-based compounds will eliminate the use of phosphoric acid and the commensurate need for neutralizing chemical as well as elimination of the tanks for phosphoric acid and neutralizing chemical mixing at field installations.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: November 14, 2000
    Assignee: Betzdearborn Inc.
    Inventors: Carlos Roberto Xavier, Claudio Candido Luiz, Luiz Antonio Fernandes
  • Defoamer and methods of use thereof
    Patent number: 6083998
    Abstract: Disclosed are methods and compositions for defoaming alcoholic fermentations. An aqueous composition of polydimethylsiloxane, an ethylene oxide/propylene oxide block copolymer and a silicone/silica blend is employed to treat the fermentation for foaming.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: July 4, 2000
    Assignee: BetzDearborn Inc.
    Inventors: Raimundo Romualdo, Claudio Candido Luiz, Luiz Antonio Fernandes