Patents by Inventor Joseph M. Hunt

Joseph M. Hunt 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).

  • Corrosion-resistant tube assembly
    Patent number: 4524996
    Abstract: A corrosion-resistant component is provided for a corrosion-resistant tube assembly. The component includes a corrosion-susceptible metal tube and a sleeve of corrosion-resistant metal mechanically joined to the tube for protecting the end portions of the tube. The sleeve includes a first portion terminating in a ring-shaped second portion. The first portion annularly extends about a surface of a tube and is mechanically joined thereto. A second portion of the sleeve overlies the annular end surfaces of the corrosion-susceptible tube. The component includes a corrosion-resistant liner for the tube which is sealed with an inside surface of a portion of the sleeve about the circumference by an expansion joint between the liner and tube.A corrosion-resistant tube assembly having a corrosion-resistant component is also provided such that tubes are mechanically and threadably joined by the sleeves. The assembly has all inside surfaces of the tube assembly of corrosion-resistant material.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: June 25, 1985
    Assignee: Allegheny Ludlum Steel Corporation
    Inventor: Joseph M. Hunt
  • Method for producing semiconductor devices
    Patent number: 4503089
    Abstract: A composite article, and method for producing the same, said article being adapted for use as a semiconductor device. The composite article comprises and is produced by depositing on a first layer of metal having an irregular metal surface a second layer consisting essentially of a phosphate, silicate or a combination thereof, said second layer having a thickness sufficient to provide a smooth surface over said irregular metal surface and a third layer of a conventional semiconductor material coated on said smooth surface.
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: March 5, 1985
    Assignee: Allegheny Ludlum Steel Corporation
    Inventor: Joseph M. Hunt
  • Composite article for a semiconductor device
    Patent number: 4450208
    Abstract: A composite article, and method for producing the same, said article being adapted for use as a semiconductor device. The composite article comprises and is produced by depositing on a first layer of metal having an irregular metal surface a second layer consisting essentially of a phosphate, silicate or a combination thereof, said second layer having a thickness sufficient to provide a smooth surface over said irregular metal surface and a third layer of a conventional semiconductor material coated on said smooth surface.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 22, 1984
    Assignee: Allegheny Ludlum Steel Corporation
    Inventor: Joseph M. Hunt