Patents by Inventor Jonathan Coppersmith

Jonathan Coppersmith 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).

  • Musical instrument string
    Patent number: 5408911
    Abstract: A method of treating a nylon or other non-ferromagnetic musical instrument string so that its movement is detectable by a ferromagnetic pickup includes applying ferromagnetic material to a portion of the string when the string is mounted to an instrument. The preferred method is to paint the string with a fluid material comprising a suspension of nickel particles in a solvent, and permitting the solvent to evaporate to leave a residue of nickel particles on the string.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: April 25, 1995
    Assignee: Lyrrus, Inc.
    Inventors: Nathaniel Weiss, Jonathan Grayson, Jonathan Coppersmith