Patents by Inventor Edward C. Shaffer

Edward C. Shaffer 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).

  • Camouflage VHF antenna
    Patent number: 4023179
    Abstract: A camouflaged VHF military antenna is formed from the slot which is created hen the door of a pick-up truck having a metal shelter thereon is left partially ajar.
    Type: Grant
    Filed: October 8, 1975
    Date of Patent: May 10, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Kurt Ikrath, William Kennebeck, Edward C. Shaffer
  • Camouflaged VHF antenna
    Patent number: 4005429
    Abstract: A camouflaged VHF antenna for military vehicles. A false roof is fitted to he roof of the vehicle's metal shelter. The false roof includes a U-shaped slot which is parallel to the left and right edges and the rear edge of the vehicle roof. The slot is fed at the center of the U and tuning circuits are connected to the left and right edges of the slot.
    Type: Grant
    Filed: October 8, 1975
    Date of Patent: January 25, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Kurt Ikrath, William Kennebeck, Edward C. Shaffer, Peter J. Pingitore
  • Semiconductive metal chalcogenides of the type Cu.sub.3 VS.sub.4 and methods for preparing them
    Patent number: 3945935
    Abstract: Novel semiconductive tertiary and higher order type copper-Group V transition metal chalcogenides having useful broad-band photoconductive properties are characterized by containing fewer than 100 ppm of impurities as determined by electron microprobe analysis, excluding doping agents which may be present. These materials are made e.g. by chemical vapor transport methods using the powdered chalcogenide or mixtures of stoichiometric amounts of the elements of which it is composed, with a small amount of halogen or hydrogen halide and heating the mixture in vacuum in a temperature gradient in which the highest temperature is below about 1200.degree. C. Photoconducting devices can be made e.g. by supplying electrodes to a thin film of the material upon a dielectric substrate.
    Type: Grant
    Filed: October 29, 1971
    Date of Patent: March 23, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Bruce A. Torp, Edward C. Shaffer