Patents by Inventor Clifford R. Whiddon

Clifford R. Whiddon 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).

  • Method of continuous casting slabs to produce good surface quality hot-rolled band
    Patent number: 4657066
    Abstract: A method is provided for producing substantially austenitic stainless steel strip, particularly chromium-nickel grades, having ultra low sulfur levels up to 0.002% by conventionally continuously casting the slab and thereafter hot rolling the slab to hot-rolled band by improving the ability to achieve hot-rolled band having good surface quality as characterized by reduced metallurgical slivers.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: April 14, 1987
    Assignee: Allegheny Ludlum Corporation
    Inventors: Clifford R. Whiddon, Daniel R. Flaherty, Lawrence E. Turowski
  • Ingot mold and method for pouring ingots
    Patent number: 4054170
    Abstract: An ingot mold of the bottle-top type and method for its use wherein the primary pipe or shrinkage cavity at the top of the ingot is decreased in length and a solid bridge is formed between the primary and secondary pipe cavities, sealing off the secondary cavity. The cast ingot is cropped in the area of the solid bridge between the primary and secondary pipe cavities, leaving the secondary cavity sealed such that it can be welded without oxidation during hot rolling to increase the ingot yield.
    Type: Grant
    Filed: June 15, 1976
    Date of Patent: October 18, 1977
    Assignee: Allegheny Ludlum Industries, Inc.
    Inventors: Dwight A. Kraai, Clifford R. Whiddon