Patents Assigned to The Signal Companies, Inc.
  • Patent number: 4573768
    Abstract: Electrochromic display devices which will maintain coloration after the electric current has been removed will comprise an electronic conductor consisting of a support which may be electrically conductive per se or contain an electronic conductor thereon, an electrochromic material in contact with said conductor, a solid electrolyte comprising a blend of an organic polymer and a heteropoly acid or salt thereof disposed on said electrochromic material and a counter-electrode in contact with the solid electrolyte. By utilizing this type of solid electrolyte, it is possible to obtain a display device which may range from about 5 to about 100 microns in thickness.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: March 4, 1986
    Assignee: The Signal Companies, Inc.
    Inventors: Anthony J. Polak, James A. Wrezel, Allyson J. Beuhler
  • Patent number: 4063561
    Abstract: An endotracheal intubation device is disclosed for manipulating the lower end of an endotracheal tube into the trachea or windpipe by magnetically displacing the tip of the tube to direct it towards the trachea as the tube is lowered down a patient's throat.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: December 20, 1977
    Assignee: The Signal Companies, Inc.
    Inventor: Roger DeSalvo McKenna