Patents by Inventor Stephen Cerven

Stephen Cerven 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).

  • Publication number: 20070131153
    Abstract: An apparatus that cleanly severs and clears crop debris from a planting row or closes a furrow while causing minimal disturbance to the soil. The residue coulter apparatus comprises a pair of flat discs each having a plurality of back swept teeth extending about their periphery. The teeth include a beveled cutting edge on the outer edge of the teeth adapted to sever residue from the field or close a furrow. The discs are oriented substantially vertical to the ground. Two discs are used in combination to clear a pathway for planting seed or for closing a furrow.
    Type: Application
    Filed: February 16, 2007
    Publication date: June 14, 2007
    Applicant: YETTER MANUFACTURING COMPANY
    Inventors: Patrick Whalen, Stephen Cerven, Derek Litchfield