Patents by Inventor Willi Stich

Willi Stich 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).

  • Advanced magnetic circuit to improve both the solenoidal and magnetic functions of string instrument pickups with co-linear coil assemblies
    Publication number: 20060156911
    Abstract: An electromagnetic pickup for a stringed musical instrument incorporating a magnetic structure placed between two elongated collinear coils of opposing polarity. The magnetic structure includes a number of ferromagnetic polepieces that extend through the collinear coils and two ferromagnetic moderator bars adjacent to and on opposite sides of the polepieces (within the area between the two coils) that are charged with one polarity by high coercive rare earth high coercive permanent magnets attached to the outer surface of the moderator bars.
    Type: Application
    Filed: January 15, 2005
    Publication date: July 20, 2006
    Inventor: Willi Stich