Patents by Inventor Erich Papenfus

Erich Papenfus 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).

  • String instrument frets and associated fret optical apparatus
    Patent number: 8269083
    Abstract: An instrument comprising a body, a neck and a plurality of strings. The neck comprises a first end having a headstock, a fretboard, at least one mineral fret coupled to the fretboard, and a second end one of coupled and integrated to the body. The mineral fret may be generally transparent.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: September 18, 2012
    Inventor: Erich Papenfus
  • String Instrument Frets and Associated Fret Optical Apparatus
    Publication number: 20100186573
    Abstract: An instrument comprising a body, a neck and a plurality of strings. The neck comprises a first end having a headstock, a fretboard, at least one mineral fret coupled to the fretboard, and a second end one of coupled and integrated to the body. The mineral fret may be generally transparent.
    Type: Application
    Filed: March 31, 2010
    Publication date: July 29, 2010
    Inventor: Erich Papenfus
  • String instrument frets and associated fret optical apparatus
    Patent number: 7714218
    Abstract: An instrument comprising a body, a neck and a plurality of strings. The neck comprises a first end having a headstock, a fretboard, at least one mineral fret coupled to the fretboard, and a second end one of coupled and integrated to the body. The mineral fret may be generally transparent.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: May 11, 2010
    Inventor: Erich Papenfus
  • String Instrument Frets and Associated Fret Optical Apparatus
    Publication number: 20090272248
    Abstract: An instrument comprising a body, a neck and a plurality of strings. The neck comprises a first end having a headstock, a fretboard, at least one mineral fret coupled to the fretboard, and a second end one of coupled and integrated to the body. The mineral fret may be generally transparent.
    Type: Application
    Filed: May 5, 2008
    Publication date: November 5, 2009
    Inventor: Erich Papenfus