Patents by Inventor Ronald E. Markfelder

Ronald E. Markfelder 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).

  • Weed shield
    Patent number: D483629
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: December 16, 2003
    Assignee: Molenaar, Inc.
    Inventor: Ronald E. Markfelder
  • Computer monitor mirror and note holder
    Patent number: D567512
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: April 29, 2008
    Assignee: Molenaar, LLC
    Inventors: Steven L. Molenaar, Ronald E. Markfelder
  • Measuring cup with thumb depression
    Patent number: D577615
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: September 30, 2008
    Assignee: Molenaar, LLC
    Inventor: Ronald E. Markfelder
  • Computer monitor mirror and note holder
    Patent number: D591517
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: May 5, 2009
    Assignee: Molenaar, LLC
    Inventors: Steven L Molenaar, Ronald E Markfelder
  • Pizza cutter
    Patent number: D652271
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: January 17, 2012
    Assignee: Molenaar, LLC
    Inventors: James R. Moore, Ronald E. Markfelder