Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate into a building, where the passage of the wavelengths into the building could adversely affect people or machinery within the building. The combination of filters is useful improve wireless networks performance by blocking or attenuating undesired electromagnetic interference, and radio frequency interference.
Type:
Application
Filed:
December 4, 2008
Publication date:
April 2, 2009
Applicants:
ASTIC SIGNALS DEFENSES LLC, CPFILMS INC.
Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate into a building, where the passage of the wavelengths into the building could adversely affect people or machinery within the building. The combination of filters is useful improve wireless networks performance by blocking or attenuating undesired electromagnetic interference, and radio frequency interference.
Type:
Grant
Filed:
January 12, 2005
Date of Patent:
July 29, 2008
Assignees:
ASTIC Signals Defenses LLC, CPFilms, Inc.
Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate into a building, where the passage of the wavelengths into the building could adversely affect people or machinery within the building. The combination of filters is useful improve wireless networks performance by blocking or attenuating undesired electromagnetic interference, and radio frequency interference.
Type:
Application
Filed:
December 20, 2007
Publication date:
April 24, 2008
Applicants:
ASTIC SIGNALS DEFENSES LLC, CPFILMS INC.
Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate which would pose a security risk. The combination of filters is useful to prevent unauthorized data collection and information exchange from or within buildings or otherwise prevent such unauthorized data collection and information exchange from, for example, computer monitors or screens, personal digital assistance, and local area networks. The substrate with the combination of filters may be in the form of a bag or a tent.
Type:
Grant
Filed:
December 15, 2006
Date of Patent:
November 13, 2007
Assignees:
Astic Signals Defenses, LLC, CPFilms, Inc.
Inventors:
Deron Simpson, Lisa Y. Winckler, Ronald L. Spraker
Abstract: A combination of filters for filtering selected wavelengths of electromagnetic radiation is provided on a transparent substrate such as a plastic film or glazing of a window. The combination of filters prevents or attenuates the passage of wavelengths through the substrate which would pose a security risk. The combination of filters is useful to prevent unauthorized data collection and information exchange from or within buildings or otherwise prevent such unauthorized data collection and information exchange from, for example, computer monitors or screens, personal digital assistance, and local area networks. The substrate with the combination of filters may be in the form of a bag or a tent.
Type:
Grant
Filed:
May 28, 2003
Date of Patent:
February 13, 2007
Assignees:
Astic Signals Defenses, LLC, CPFilms, Inc.
Inventors:
Deron Simpson, Lisa Y. Winckler, Ronald L. Spraker
Abstract: The invention describes a system and methods for filtering electromagnetic and visual transmissions and for minimizing acoustic transmissions. Various combinations of UV, IR, and yellow-tinted filters are applied in various physical configurations to a transparent substrate such as a plastic film or glazing of a window for modifying selected wavelengths of electromagnetic radiation. For instance a light filter may have a multi-layered metallic sputtered stack having a relatively low sheet resistance. The combination of filters prevents or attenuates the passage of selected wavelengths through the substrate as needed to address security risks. The combination of filters is useful to prevent unauthorized data collection and information exchange from or within buildings or otherwise prevent such unauthorized data collection and information exchange from, for example, computer monitors or screens, personal digital assistants, and local area networks.
Type:
Grant
Filed:
May 28, 2003
Date of Patent:
February 22, 2005
Assignees:
ASTIC Signals Defenses LLC, CP Films
Inventors:
Deron Simpson, Lisa Y. Winckler, Ronald L. Spraker