Patents by Inventor Douglas C. Dean

Douglas C. Dean 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).

  • Composition for deboronizing grain-oriented silicon steel
    Patent number: 5011548
    Abstract: For making a ductile boron-containing grain-oriented silicon steel, there is practiced, at a late stage in the making of the product either during the final texture anneal or a subsequent anneal, a high-temperature anneal in a reducing atmosphere with the use of a separating-agent coating, particularly magnesium oxide, which contains an effective amount of a compound of molybdenum and/or tungsten.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: April 30, 1991
    Assignee: Allegheny Ludlum Corporation
    Inventor: Douglas C. Dean
  • Manufacture of ductile high-permeability grain-oriented silicon steel
    Patent number: 4793873
    Abstract: For making a ductile boron-containing grain-oriented silicon steel, there is practiced, at a late stage in the making of the product either during the final texture anneal or a subsequent anneal, a high-temperature anneal in a reducing atmosphere with the use of a separating-agent coating, particularly magnesium oxide, which contains an effective amount of a compound of molybdenum and/or tungsten.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: December 27, 1988
    Assignee: Allegheny Ludlum Corporation
    Inventor: Douglas C. Dean