Patents by Inventor Ledu Nguyen

Ledu Nguyen 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: 20070216051
    Abstract: An automotive fluid filter comprises a plurality of pellets that are sintered together and define a plurality of pores therebetween for passage of automotive fluid through the pores so as to filter the automotive fluid when the automotive fluid is advanced therethrough. An associated method is disclosed.
    Type: Application
    Filed: May 4, 2007
    Publication date: September 20, 2007
    Applicant: PUROLATOR FILTERS NA LLC
    Inventors: Ledu NGUYEN, Allen WRIGHT
  • Publication number: 20070215559
    Abstract: An automotive fluid filter comprises a plurality of pellets that are sintered together and define a plurality of pores therebetween for passage of automotive fluid through the pores so as to filter the automotive fluid when the automotive fluid is advanced therethrough. An associated method is disclosed.
    Type: Application
    Filed: May 4, 2007
    Publication date: September 20, 2007
    Applicant: PUROLATOR FILTERS NA LLC
    Inventors: Ledu NGUYEN, Allen WRIGHT
  • Publication number: 20060043027
    Abstract: An automotive fluid filter comprises a plurality of pellets that are sintered together and define a plurality of pores therebetween for passage of automotive fluid through the pores so as to filter the automotive fluid when the automotive fluid is advanced therethrough. An associated method is disclosed.
    Type: Application
    Filed: September 1, 2004
    Publication date: March 2, 2006
    Inventors: Ledu Nguyen, Allen Wright
  • Publication number: 20060016745
    Abstract: A filter for a fluid system includes a housing having an interior cavity. A filter media is disposed in the housing and defines a central opening. A center tube assembly is arranged within the central opening and includes discs which are stackable upon one another. Each disc includes a central portion having base received by an inner wall of the central portion of the adjacent disc. An outer portion extends radially outwardly from the central portion and is positioned adjacent to the filter media. The central portion, base, and outer portion may include openings to permit the flow of fluid through the center tube assembly. The center tube assembly provides the desired structural integrity while permitting fluid to flow through the center tube. The present invention center tube assembly may be produced by a plastic molding process.
    Type: Application
    Filed: September 1, 2005
    Publication date: January 26, 2006
    Inventors: Ledu Nguyen, Allen Wright
  • Publication number: 20050252849
    Abstract: A method of manufacturing an oil filter module comprises directing a laser beam at a surface of an end cap but not at a rim of the end cap so as to fuse at least a portion of the end cap, spacing the end cap and the filter medium apart from one another during the directing step, inserting an end of the filter medium into the laser-fused portion so as to bond the end of the filter medium and the end cap together upon re-solidification of the laser-fused portion, and preventing flow of the laser-fused portion caused by the inserting step from reaching a peripheral diameter of the end cap by use of the rim.
    Type: Application
    Filed: July 25, 2005
    Publication date: November 17, 2005
    Inventors: Allen Wright, Ledu Nguyen