Patents by Inventor John H. Ablewhite

John H. Ablewhite 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).

  • Production of age hardenable aluminum extruded sections
    Patent number: 4495001
    Abstract: In the thermal ageing of extruded sections of age-hardenable aluminum alloys the sections are progressed through a system having an initial low temperature zone and a subsequent high temperature zone. In order to secure uniform ageing the sections are progressed in a direction transverse to their length and conveniently are arranged in a single layer and spaced apart to ensure acceptably uniform rate of heating to ageing temperature.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: January 22, 1985
    Assignee: Alcan International Limited
    Inventors: Walter Bennett, John H. Ablewhite, Anthony J. Bryant