Patents by Inventor W. Larry Freeman

W. Larry Freeman 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: 4443303
    Abstract: An infrared detector array and its associated conductors on a substrate are overed with an insulating antireflection layer. In one embodiment, a thin metal layer is sputtered or evaporated on this layer and the metal is masked and etched to uncover desired portions of the insulating layer over the detectors and the conductors. The mask is removed and a thick metal layer is electroplated onto the thin metal layer. An alternate embodiment applies the thick metal layer on an unetched thin metal layer, and both layers are etched through a mask to uncover the desired portions of the insulating layer. The mask is stripped and the final steps (both embodiments) include masking and etching to remove the non-metallized insulating layer on the conductors.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: April 17, 1984
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: W. Larry Freeman