Patents by Inventor Douglas C. Pierson

Douglas C. Pierson 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).

  • Applying liquid biodegrading agents to guided harvest residue
    Patent number: 8667769
    Abstract: Apparatus and methods for harvesting a plurality of crop rows guide harvest residue and apply a liquid biodegrading agent thereto, while harvesting the crops.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: March 11, 2014
    Inventor: Douglas C. Pierson
  • Methods and apparatus for guiding harvest residue
    Patent number: 7814737
    Abstract: Methods and systems for harvesting crop rows employ a plurality of pairs of residue guides to guide harvest residue into rows that are left behind the harvesting machine in the place of the harvested crop rows.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: October 19, 2010
    Inventor: Douglas C. Pierson
  • APPLYING LIQUID BIODEGRADING AGENTS TO GUIDED HARVEST RESIDUE
    Publication number: 20100205922
    Abstract: Apparatus and methods for harvesting a plurality of crop rows guide harvest residue and apply a liquid biodegrading agent thereto, while harvesting the crops.
    Type: Application
    Filed: May 4, 2010
    Publication date: August 19, 2010
    Inventor: Douglas C. Pierson
  • Methods and apparatus for guiding harvest residue
    Patent number: 7658058
    Abstract: Methods and devices for guiding harvest residue at the time of harvest to prepare crops for strip-tilling operations. Embodiments of the invention include an attachment for a harvesting machine, and a method of harvesting a row crop in a way that directs harvest residue into relatively narrow strips, leaving strips of soil between the strips of harvest residue in better condition for strip-tilling. The management and placement of harvest residue during harvesting operations according to embodiments of the invention may improve the overall efficiency and effectiveness of strip-tilling operations.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: February 9, 2010
    Inventor: Douglas C. Pierson