United States Patent Office awards Patent #6,783,113 B2 to Quadrant Valve & ActuatorOn August 31, 2004 the U.S. Patent Office awarded a Patent covering our "modified square stem" ISO topworks design used on all of Quadrant's butterfly valves, and used on all of our larger flanged ball valves in conjunction with our submerged stem packing system. The competitive advantages provided by these features, especially when automating Qadrant valves, will remain a Quadrant exclusive now that we have obtained Patent coverage. Back |

