Patents by Inventor John Dutton

John Dutton 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).

  • Miniaturized reverse-fed planar inverted F antenna
    Publication number: 20030025637
    Abstract: In a planar inverted F antenna (PIFA), the feed and RF grounding connections are reversed yielding improved performance. Relative positioning of these connections is selected to tailor the characteristics of the antenna, such as resonant frequency and impedance bandwidth.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 6, 2003
    Applicant: e-tenna Corporation
    Inventors: Greg S. Mendolia, John Dutton, William E. McKinzie
  • Method of making a product
    Patent number: 6387319
    Abstract: A method of making a product which is generally impervious to water including the steps of making a generally homogenous mixture of slate particles and clay, setting the mixture as necessary to produce a formable composition, forming the wet mixture to a desired configuration, at least partially drying the formed mixture and subjecting the dried formed mixture to a temperature of at least 1145° C. for a time sufficient for at least some of the clay to convert into a binder to bind together the slate particles.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: May 14, 2002
    Assignee: Digive Limited of York House
    Inventor: John Dutton