Patents by Inventor Lap Thai Nguyen

Lap Thai 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).

  • Co-extruded tubing for an off-axis ink delivery system
    Patent number: 6557987
    Abstract: A fluid transport conduit for conveying ink-jet ink from a reservoir to a printhead in an ink-jet printer is provided. The fluid transport conduit comprises at least one inner layer, such as high density polyethylene, cyclic olefin copolymer, or polypropylene homopolymer, that is flexible and is a barrier to liquids, and at least one outer layer, such as nylon or polyvinyl alcohol, that is a barrier to air and is softer, or more compliant, than the inner layer, with the inner layer bonded to the outer layer. The two layers are advantageously co-extruded to form the fluid transport conduit.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: May 6, 2003
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alan Shibata, Alan Biggs, Lap Thai Nguyen, John Michael Kniffin, Paul L. Nash, Yi Liu, Gerald A. Mello, Ah Chong Johnny Tee, Timothy A. Longust, Justin M. Roman