Patents by Inventor Alan T. Sibley

Alan T. Sibley 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).

  • Process for providing a uniform carbon distribution in ferrous compacts at high temperatures
    Patent number: 4436696
    Abstract: A process for high temperature sintering of ferrous powder metallurgy compacts having a substantially uniform carbon distribution which comprises:(a) heating the ferrous powder metallurgy compact in the heating zone of a sintering furnace to a temperature of about 2,300.degree. to 2,550.degree. F. (1,260.degree. to 1,399.degree. C.),(b) introducing to the heating zone an atmosphere comprising about 2 to less than 10 volume percent hydrogen, about 0.5 to 2.0 volume percent carbon monoxide, about 0.5 to 1.0 volume percent methane and the balance nitrogen, and(c) removing the sintered product from the furnace.
    Type: Grant
    Filed: May 20, 1981
    Date of Patent: March 13, 1984
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Daniel M. Buck, Alan T. Sibley, John J. Kaiser