ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,941, issued on June 24, was assigned to Bayou HoldCo Inc. (Houston).
"Molding system for insulated pipe" was invented by Randall Perkins (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pipe has first and second exterior layers of insulation. The first layer of insulation has a higher temperature rating than the second. The second layer can be thicker than the first. In a system and method for forming the insulated pipe, a first mold having a first inner diameter is used for the first layer of insulation and a second mold having a second inner diameter greater than the first inner diameter is used for the second layer of insulation. The fir...