Patents by Inventor Owen J. Powlen

Owen J. Powlen 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).

  • Treatment of on-site animal waste pits
    Patent number: 5716523
    Abstract: Provided are methods and compositions for treating on-site animal waste pits in order to soften the fluidized hardened solid wastes therein. The methods and compositions involve the use of Lactobacillus bacteria in effective amounts. Also preferably, a nitrogen-fixing bacteria is included in order to fix nitrogen in removed wastes to increase their fertilizer value.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: February 10, 1998
    Inventor: Owen J. Powlen
  • Treatment of on-site animal waste pits
    Patent number: 5627069
    Abstract: Provided are methods and compositions for treating on-site animal waste pits in order to soften the fluidized hardened solid wastes therein. The methods and compositions involve the use of Lactobacillus bacteria in effective amounts. Also preferably, a nitrogen-fixing bacteria is included in order to fix nitrogen in removed wastes to increase their fertilizer value.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 6, 1997
    Inventor: Owen J. Powlen