Patents by Inventor Steven W. Spence

Steven W. Spence 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).

  • Publication number: 20070267594
    Abstract: Ferrite materials are disclosed, comprising, as main components, an amount of iron component ranging from 51.0 to 59.0 mole percent calculated as Fe2O3, an amount of manganese component ranging from 38.0 to 47.0 mole percent calculated as MnO, and an amount of zinc component ranging from 1.0 to 3.0 mole percent calculated as ZnO. Embodiments provided herein also include, as minor components, an amount of calcium component ranging from 0.010 to 0.060 weight percent calculated as CaO, an amount of silicon component ranging from 0.005 to 0.040 weight percent calculated as SiO2, and, optionally, an amount of niobium component ranging up to 0.040 weight percent calculated as Nb2O5, an amount of zirconium component ranging up to 0.050 weight percent calculated as ZrO2, and an amount of tantalum component ranging up to 0.060 weight percent calculated as Ta2O5. Methods of forming the ferrite materials and products formed therefrom are also disclosed herein.
    Type: Application
    Filed: May 17, 2006
    Publication date: November 22, 2007
    Inventors: Mark A. Fanton, Steven W. Spence, Joseph F. Huth
  • Patent number: D521791
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: May 30, 2006
    Assignee: OEM, Shades, Inc.
    Inventor: Steven W. Spence
  • Patent number: D541567
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: May 1, 2007
    Assignee: OEM Shades, Inc.
    Inventor: Steven W. Spence