Patent 7392277 was granted and assigned to Intel on June, 2008 by the United States Patent and Trademark Office.
A cascaded differential domino four-to-two reducer. In an embodiment, the four-to-two reducer is constructed of a first three-to-two reducer and a second three-to-two reducer directly connected to the first three-to-two reducer. In a further embodiment, the first and second three-to-two reducer both include a symmetric carry generate gate.