Patents by Inventor Julia N. Martin

Julia N. Martin 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).

  • Patent number: 8127652
    Abstract: A double finger trap loop includes at least one braid having a first end and a second end. The braid is defined by an inner portion and an outer portion. The inner portion is a hollow conduit in the braid. The braid is readily adaptable to accept the first end and the second end into the hollow conduit. The first end and the second end are associated with each other. The association is capable of adhering the first end to the second end by a continuous internal stitch.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: March 6, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Elsa J. Hennings, Julia N. Martin
  • Patent number: 4897664
    Abstract: The described embodiments of the present invention provide a high-gain antenna while allowing for the inclusion of devices within the antenna array. In one embodiment of the invention an array of receiver/transmitter elements is positioned in a pan-like reflector base. The elements are positioned one-quarter of a wavelength from the surface of the base. The wavelength is the wavelength of the chosen frequency of transmission or reception of the antenna. A partially reflective plate is positioned one-half wavelength from the base and thus one quarter wavelength from the elements. Reflective disks are also positioned one-half wavelength above the base and are positioned directly above the elements. The disks create a resonant cavity around the elements for waves of the chosen frequency arriving from near normal to the plane of the base or being emanated from the elements at a normal or near-normal angle. The partially reflective plate extends this resonant area spatially from the element.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: January 30, 1990
    Assignee: General Dynamics Corp., Pomona Division
    Inventors: Henry T. Killackey, Julia N. Martin