Patents by Inventor Arie C. Slaa

Arie C. Slaa 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).

  • Radio frequency electromagnetic emissions shield
    Patent number: 6803883
    Abstract: A shield for shielding radio frequency emissions being emitted from a communications antenna. The shield has a first layer of material having the physical property of generally absorbing radio frequency electromagnetic emissions and a second layer of material having the physical property of generally reflecting radio frequency emissions. The first layer of material is positioned between the second layer of material and the communications antenna. Therefore, the first layer of material absorbs a portion of the radio frequency emissions from the communications antenna, and the second layer of material reflects back the remaining emissions to the first layer of material. Therefore, the first layer absorbs a further portion of the remaining emissions. A layer of absorbing material is placed between the combined first & second layers and a material that is transparent to radio frequency emissions and through which the communications antenna radiates radio frequency energy.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: October 12, 2004
    Assignee: SpectraSite Communications, Inc.
    Inventors: Ted A. Abrams, John M. Duckworth, Gregory A. O'Neill, Jr., Ludwik J. Wodka, Arie C. Slaa
  • RADIO FREQUENCY ELECTROMAGNETIC EMISSIONS SHIELD
    Publication number: 20040160378
    Abstract: A shield for shielding radio frequency emissions being emitted from a communications antenna. The shield has a first layer of material having the physical property of generally absorbing radio frequency electromagnetic emissions and a second layer of material having the physical property of generally reflecting radio frequency emissions. The first layer of material is positioned between the second layer of material and the communications antenna. Therefore, the first layer of material absorbs a portion of the radio frequency emissions from the communications antenna, and the second layer of material reflects back the remaining emissions to the first layer of material. Therefore, the first layer absorbs a further portion of the remaining emissions. A layer of absorbing material is placed between the combined first & second layers and a material that is transparent to radio frequency emissions and through which the communications antenna radiates radio frequency energy.
    Type: Application
    Filed: February 13, 2003
    Publication date: August 19, 2004
    Inventors: Ted A. Abrams, John M. Duckworth, Gregory A. O'Neill, Ludwik J. Wodka, Arie C. Slaa