Patents by Inventor Douglas Hinrichs

Douglas Hinrichs 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).

  • One-handed musical triangle
    Patent number: 8101841
    Abstract: A triangle musical instrument that may be played using a single hand. The triangle is formed such that a percussionist is able to grasp the triangle in one hand and shake it in a back-and-forth motion to produce the familiar triangle musical instrument sound. Openings formed in the sides of the instrument allow the percussionist to mute the sounds.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: January 24, 2012
    Assignee: KMC Music, Inc.
    Inventors: Douglas Hinrichs, Andrzej Krol, Ray Enhoffer, Richard Simons
  • One-Handed Musical Triangle
    Publication number: 20110167981
    Abstract: A triangle musical instrument that may be played using a single hand. The triangle is formed such that a percussionist is able to grasp the triangle in one hand and shake it in a back-and-forth motion to produce the familiar triangle musical instrument sound. Openings formed in the sides of the instrument allow the percussionist to mute the sounds.
    Type: Application
    Filed: January 14, 2010
    Publication date: July 14, 2011
    Inventors: Douglas Hinrichs, Andrzej Krol, Ray Enhoffer, Richard Simons