Patent 7636028 was granted and assigned to Littelfuse on December, 2009 by the United States Patent and Trademark Office.
Electrical fuse indicators which may be used to diagnose and identify a fault state or failure mode of the electrical fuse include in various exemplary embodiments, indicator materials such as a reactive material, which are incorporated into various fuse indicator devices to cooperate with a visually perceptible indicator portion or layer to indicate the failure mode or fault state if the electrical fuse.