Patents by Inventor Steve D. Napack

Steve D. Napack 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).

  • Circulation through compound slots
    Patent number: 6880926
    Abstract: A fluid ejection device includes a substrate having a first side and a second side opposite the first side, and a plurality of drop ejecting elements formed on the first side of the substrate. The substrate includes a first opening formed in the first side and a plurality of second openings formed in the second side with each of the second openings communicating with the first opening, wherein the second openings and the first opening are adapted to circulate fluid through the substrate.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: April 19, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ashley E. Childs, Jeffrey S. Hess, James Patrick Kearns, Steve D. Napack
  • Circulation through compound slots
    Publication number: 20040085417
    Abstract: A fluid ejection device includes a substrate having a first side and a second side opposite the first side, and a plurality of drop ejecting elements formed on the first side of the substrate. The substrate includes a first opening formed in the first side and a plurality of second openings formed in the second side with each of the second openings communicating with the first opening, wherein the second openings and the first opening are adapted to circulate fluid through the substrate.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 6, 2004
    Inventors: Ashley E. Childs, Jeffery S. Hess, James Patrick Kearns, Steve D. Napack