Patents by Inventor Mark S. Pearce

Mark S. Pearce 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).

  • Patent number: 8574441
    Abstract: A method for providing for the use of underground aquifers for water storage for municipalities or recharge. Water is treated and injected for storage in the aquifer by the addition of a small amount of a sulfide compound to remove dissolved oxygen and prevent dissolution of negative valence sulfur bearing minerals, such as pyrite, in the subsurface. The stored water may be subsequently withdrawn from the aquifer and treated to remove residual amounts of sulfide ions. The withdrawn water being suitable as potable water, irrigation water, industrial use water, and aquifer water level enhancement water.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: November 5, 2013
    Assignee: Entrix, Inc.
    Inventor: Mark S. Pearce
  • Publication number: 20110272364
    Abstract: A method for providing for the use of underground aquifers for water storage for municipalities or recharge. Water is treated and injected for storage in the aquifer by the addition of a small amount of a sulfide compound to remove dissolved oxygen and prevent dissolution of negative valence sulfur bearing minerals. such as pyrite. in the subsurface. The stored water may be subsequently withdrawn from the aquifer and treated to remove residual amounts of sulfide ions. The withdrawn water being suitable as potable water, irrigation water, industrial use water, and aquifer water level enhancement water.
    Type: Application
    Filed: December 22, 2009
    Publication date: November 10, 2011
    Inventor: Mark S. Pearce