Patents by Inventor J. Fred Major

J. Fred Major 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).

  • SOLIDIFICATION MICROSTRUCTURE OF AGGREGATE MOLDED SHAPED CASTINGS
    Publication number: 20150083280
    Abstract: A shaped metal casting made in an aggregate mold comprises fine solidification microstructure that is finer than the solidification microstructure of an analogous metal casting made from conventional molding processes. The solidification microstructure may be up to five times finer than the solidification microstructure of a conventionally prepared casting. In preferred embodiments, as a result of directional solidification, the fine solidification microstructure is substantially continuous from a distal end of the casting to a proximal end of the casting, and exhibits greatly enhanced soundness. Because of the control of the uniformity of freezing of the casting, its properties are substantially uniform.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 26, 2015
    Applicant: ALOTECH LTD. LLC
    Inventors: John R. Grassi, John Campbell, J. Fred Major
  • Aluminum alloy for making naturally aged die cast products
    Patent number: 6783729
    Abstract: Aluminum alloy die castings combine good as-cast strength with good as-cast ductility, without any heat treatment. The alloy comprises 2.75 5.25 wt. % magnesium, 1.85-3.15 wt. % zinc, 0.65-1.2 wt. % manganese, 0.10-0.18 wt. % iron, less than 0.10 wt. % copper, less than 0.10 wt. % silicon, less than 0.20 wt. % titanium and the balance aluminum and incidental impurities and furthermore the percent by weight magnesium is greater than or equal to the percent by weight zinc. A particularly high strength version of the alloy comprises 4.75%-5.25 wt. % magnesium and 2.85-3.15 wt. % zinc. A particularly high ductility version of the alloy comprises 2.75-3.25 wt. % magnesium, 1.85 2.5 wt. % zinc.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: August 31, 2004
    Assignee: Alcan International Limited
    Inventors: J. Fred Major, Lawrence Purdon
  • Aluminum alloy for making naturally aged die cast products
    Publication number: 20030111139
    Abstract: Aluminum alloy die castings combine good as-cast strength with good as-cast ductility, without any heat treatment. The alloy comprises 2.75 5.25 wt. % magnesium, 1.85-3.15 wt. % zinc, 0.65-1.2 wt. % manganese, 0.10-0.18 wt. % iron, less than 0.10 wt. % copper, less than 0.10 wt. % silicon, less than 0.20 wt. % titanium and the balance aluminum ant-d Incidental impurities and furthermore the percent by weight magnesium is greater than or equal to the percent by weight zinc. A particularly high strength version of the alloy comprises 4.75%-5.25 wt. % magnesium and 2.85-3.15 wt. % zinc. A particularly high ductility version of the alloy comprises 2.75-3.25 wt. % magnesium, 1.85 2.5 wt. % zinc.
    Type: Application
    Filed: December 10, 2002
    Publication date: June 19, 2003
    Inventors: J. Fred Major, Lawrence Purdon