Patents by Inventor Paulo Freire

Paulo Freire 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).

  • Publication number: 20070236011
    Abstract: A slip joint is described, with sliding ring and gasket seal, made of metal covered rings with a resilient core that is heat resistant to temperatures up to 600° C., applicable in a solid-gas separation closed cyclonic system in a fluid catalytic cracking unit. The set of gaskets (5) and sliding ring (4) make the differential thermal dilatations, longitudinal and axial, compatible between the concentric outlets, (2a) and (2b), interlinked, and reduces to a minimum the passage of gas and steam through the annular space (3).
    Type: Application
    Filed: April 10, 2007
    Publication date: October 11, 2007
    Applicant: PETROLEO BRASILEIRO S.A. - PETROBRAS
    Inventors: Paulo Freire, Nelson Junior, Wilson Huziwara
  • Publication number: 20070052333
    Abstract: An air handling unit 30 (AHU) for housing a number of components used in a heating or cooling system to provide forced air for climate control in a particular structure includes the following interconnected components: a corner fitting construction (16) having symmetric corner portions; a single structural member construction (14); a single insulated panel construction (26) having a peripheral frame (24) providing multiple resilient seals (318, 320) with corresponding contact surfaces of the AHU frame. A corner fitting cap (200) and structural member cap (234) overlie each respective corner fitting (16) and structural member (14), providing enhanced insulative performance for the AHU (30).
    Type: Application
    Filed: October 29, 2004
    Publication date: March 8, 2007
    Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY
    Inventor: Paulo Freire
  • Publication number: 20060286009
    Abstract: A device and a method for operating it for application in a vertical tube reactor with downward flow (downer), has the aim of ensuring the intimate mixing of the solid particulate catalyst with a reagent fluid. Homogeneous distribution of catalyst is due to the use of a plate having perforations. Said perforated plate normally allows the passage of a portion of the stream of catalyst. The other portion overflows the edge of the plate, flowing in the form of an annular curtain, near the inner surface of the surrounding tube of the device. After passing beyond the perforated plate, the curtain-flow undergoes a deflection produced by an annular screen, to be mixed with the stream originating from the orifices in the perforated plate. A hydrocarbon charge is injected below the perforated plate, forming a certain angle with respect to the direction of the downward flow of catalyst, by means of inlets distributed uniformly about cross sections of the surrounding tube.
    Type: Application
    Filed: August 30, 2006
    Publication date: December 21, 2006
    Applicant: PETROLEO BRASILEIRO S.A.
    Inventors: Wilson Huziwara, Waldir Martignoni, Mauro Silva, Jose Geraldo Ramos, Aurelio Dubois, Paulo Freire