Patents by Inventor Matthew C. Jay

Matthew C. Jay 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).

  • Patent number: 4209123
    Abstract: A process for joining together parent parts made from wrought austenitic stainless steel without sensitization of the parent material, and the product produced by this process. Each wrought workpiece has welded thereto an appendage made from cast (not wrought) austenitic stainless steel which is equal to or better in corrosion resistance and mechanical properties, and is compatible with the solution heat treatment requirements of the parent austenitic stainless steels. The resulting workpiece is solution heat treated at in-process stages of manufacture to dissolve the carbides which have been formed in the heat affected zone created by the welding operation. Then two of said workpieces are welded together at the abutment of the appendages, there being no formation of precipitated carbides in the parent material, because the heat affected zone does not extend into the wrought parent material, but instead is restricted to the appendage which by definition is not sensitizable.
    Type: Grant
    Filed: April 23, 1979
    Date of Patent: June 24, 1980
    Inventor: Matthew C. Jay