Patents by Inventor Charles A. Sigler

Charles A. Sigler 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).

  • Illuminated warning panel
    Patent number: 8905571
    Abstract: A detectable warning panel including an illumination feature. The warning panel includes an array of raised domes as for prior art warning panels. The tops of at least a portion of the domes are illuminated. Preferably the tops of all the domes are illuminated. While the illumination feature may remain on at all times, in the preferred embodiment the illumination feature is switched on and off according to ambient lighting conditions.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: December 9, 2014
    Inventor: Charles A. Sigler
  • Illuminated Warning Panel
    Publication number: 20140286039
    Abstract: A detectable warning panel including an illumination feature. The warning panel includes an array of raised domes as for prior art warning panels. The tops of at least a portion of the domes are illuminated. Preferably the tops of all the domes are illuminated. While the illumination feature may remain on at all times, in the preferred embodiment the illumination feature is switched on and off according to ambient lighting conditions.
    Type: Application
    Filed: March 20, 2013
    Publication date: September 25, 2014
    Inventor: Charles A. Sigler