ALEXANDRIA, Va., April 7 -- United States Patent no. 12,598,674, issued on April 7, was assigned to Chromalox Inc. (Pittsburgh).
"Heating element unit" was invented by Paul Neilson (Pittsburgh), Danen Lynn (Pittsburgh) and Martin Konieczny (Pittsburgh).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heating element unit for an electric resistance heater comprises: a casing; a heating element within the casing; and an electrical insulator between the heating element and the casing. In some embodiments, the electrical insulator comprises first and second layers, the second layer having a greater dielectric strength than the first layer, and the second layer having: a dielectric strength of greater than about 1...