This inventor holds 1 USPTO granted patent, plus 1 CIPO patent. Top assignee: The Dow Chemical Company. Active years: 1991.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1991
Title: William J. Schafer: Inventor in Metal-Alloy Injection Molding
Introduction
William J. Schafer is an inventor associated with Saginaw, Michigan. His patent work includes a method and apparatus for injection molding metal alloys.
Latest Patents
Schafer is credited with 1 patent: “Method and Apparatus for the Injection Molding of Metal Alloys.” The invention maintains an alloy in a thixotropic, semi-solid state inside a reciprocating extruder, at a temperature above its solidus and below its liquidus. Shearing helps form a thixotropic slurry, which is then injected into a mold to produce a useful product. After the injection stroke, a portion of the alloy residue solidifies in the nozzle, sealing it.
Career Highlights
Schafer’s listed professional associations include The Dow Chemical Company and William J. Schafer. His patent describes an approach to processing metal alloys in a semi-solid state during injection molding.
Collaborations
Schafer’s listed coworkers include Allen N. Niemi and Norbert L. Bradley.
Conclusion
William J. Schafer’s patent presents a method for molding metal alloys by controlling their semi-solid state, shearing, injection, and nozzle sealing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile