Patents by Inventor Joäo de Brito

Joäo de Brito 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).

  • Aluminum Phosphate, Polyphosphate, and Metaphosphate Particles and Their Use as Pigments in Paints and Method of Making Same
    Publication number: 20100292382
    Abstract: An aluminum phosphate composition comprising aluminum phosphate, aluminum polyphosphate, aluminum metaphosphate, or a mixture thereof. The composition may be characterized by, when in powder form, having particles wherein some of the particles have at least one or more voids per particle. In addition, the composition is characterized by exhibiting two endothermic peaks in Differential Scanning Calorimetry between about 90 degrees to about 250 degrees Celsius. The composition is also characterized by, when in powder form, having a dispersibility of at least 0.025 grams per 1.0 gram of water. The composition is made by a process comprising contacting phosphoric acid with aluminum sulfate and an alkaline solution to produce an aluminum phosphate based product; and optionally calcining the aluminum phosphate, polyphosphate or metaphosphate based product at an elevated temperature. The composition is useful in paints and as a substitute for titanium dioxide.
    Type: Application
    Filed: July 27, 2010
    Publication date: November 18, 2010
    Applicants: BUNGE FERTILIZANTES S.A., UNIVERSIDADE ESTADUAL DE CAMPINAS
    Inventors: Fernando Galembeck, Joäo de Brito
  • Aluminum phosphate, polyphosphate and metaphosphate particles and their use as pigments in paints and method of making same
    Patent number: 7763359
    Abstract: An aluminum phosphate composition comprising aluminum phosphate, aluminum polyphosphate, aluminum metaphosphate, or a mixture thereof. The composition may be characterized by, when in powder form, having particles wherein some of the particles have at least one or more voids per particle. In addition, the composition is characterized by exhibiting two endothermic peaks in Differential Scanning Calorimetry between about 90 degrees to about 250 degrees Celsius. The composition is also characterized by, when in powder form, having a dispersibility of at least 0.025 grams per 1.0 gram of water. The composition is made by a process comprising contacting phosphoric acid with aluminum sulfate and an alkaline solution to produce an aluminum phosphate based product; and optionally calcining the aluminum phosphate, polyphosphate or metaphosphate based product at an elevated temperature. The composition is useful in paints and as a substitute for titanium dioxide.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: July 27, 2010
    Assignees: Bunge Fertilizantes S.A., Universidade Estadual de Campinas
    Inventors: Fernando Galembeck, Joäo de Brito