Patents Assigned to PTI/End-Corr, Inc.
  • Centrifugally cast pipe
    Patent number: 5266370
    Abstract: A centrifugally cast plastic pipe comprised of a polymer derived from monomers polymerized in bulk is provided. A pressurized cylindrical mold provides smooth inner and outer surfaces. Pipes with a wall thickness of from 1/8 inch to 3 inches and an outer diameter of 1 inch to 12 feet are provided.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: November 30, 1993
    Assignee: PTI/End-Corr, Inc.
    Inventors: Charles S. Woodson, Michael J. Darnall, Norman A. Deumite