Patents by Inventor Schiao F. Chou

Schiao F. Chou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Injection molding and extrusion barrels and alloy compositions thereof
    Patent number: 5565277
    Abstract: A bimetallic barrel for use in injection molding and extrusion. The barrel is formed of a backing steel and a metal inlay liner. The backing steel is either a microalloyed steel, carbon steel 1045 or carbon steel 1060. Inlay compositions, including copper containing ones, are disclosed.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: October 15, 1996
    Assignee: Xaloy, Inc.
    Inventors: Walter G. Cox, Jr., Schiao F. Chou
  • Corrosion and wear resistant bimetallic cylinder
    Patent number: 5185162
    Abstract: A bimetallic cylinder of steel having an alloy inlay which includes chromium boride in a matrix of iron alloy containing carbon, silicon, nickel and copper. The chromium boride imparts wear resistance to the inlay and relatively high contents of chromium, nickel and silicon and the presence of molybdenum and copper in the alloy make it resistant to corrosion. The cylinder is useful for injection molding and extrusion of plastics.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: February 9, 1993
    Assignee: Xaloy, Incorporated
    Inventor: Schiao F. Chou
  • Process for using a high pressure injection molding cylinder
    Patent number: 5160690
    Abstract: An iron-based inlay alloy composition for high pressure injection molding of plastics. The composition includes carbon, chromium, molybdenum, tungsten and vanadium, and may be used as an inlay for bimetallic cylinders for injection molding plastic at pressures above 40,000 psi.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: November 3, 1992
    Assignee: Xaloy Incorporated
    Inventors: Walter G. Cox, Jr., Schiao F. Chou
  • High temperture corrosion resistant bimetallic cylinder
    Patent number: 5019459
    Abstract: A high temperture, bimetallic cylinder of either ASTM 193B-16 carbon steel or duplex stainless steel having a wear and corrosion resistant inlay or liner of a nickel-based alloy containing 1.5 to 4.5% carbon, 1.5 to 3.5% silicon, 1.0 to 3.0% boron, up to 7.0% chromium, up to 15% iron, 1.0 to 6.0% cobalt and 30 to 60% tungsten. The inlay is centrifugally cast within the cylinder which is thermally compatible with the inlay such that it retains a high yield strength after casting.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: May 28, 1991
    Assignee: Xaloy Incorporated
    Inventors: Schiao F. Chou, Willie Roberson