Patents by Inventor Timothy Hirzel

Timothy Hirzel 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).

  • Audio on location
    Patent number: 8406791
    Abstract: A system is disclosed for receiving, categorically storing, and supplying different types of location-specific audio information to either fixed or mobile users. The audio information is categorically stored by geographical location. As users travel through different environments (i.e., cities, freeway systems, airports) they can access audio information that is specific to their geographical location. Users may also annotate locations with real-time audio information. This audio information is accessible to mobile users using cellular phones, or other transceivers, and by fixed users using phones or computers.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: March 26, 2013
    Assignee: HRL Laboratories, LLC
    Inventors: Mike Daily, Kevin Martin, Timothy Hirzel
  • Functional fluid compositions containing erosion inhibitors
    Publication number: 20050056809
    Abstract: A phosphate ester-based functional fluid composition incorporating at least one erosion inhibitor selected from the erosion inhibitors of the invention. The phosphate ester-based functional fluids are particularly useful as aviation hydraulic fluids.
    Type: Application
    Filed: November 4, 2003
    Publication date: March 17, 2005
    Inventors: David Silverman, Timothy Hirzel