Patents by Inventor Michael T. Oldsberg

Michael T. Oldsberg 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).

  • Galvanized metal corrosion inhibitor
    Patent number: 6814930
    Abstract: A white rust inhibiting composition and method of inhibiting white rust for evaporative water coolers are disclosed. The composition includes, in combination, a blend of one or more organophosphorus compounds and one or more tannin compounds.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: November 9, 2004
    Inventors: Michael T. Oldsberg, Bruce D. Busch
  • Galvanized metal corrosion inhibitor
    Patent number: 6468470
    Abstract: A white rust inhibiting composition and method of inhibiting white rust for evaporative water coolers are disclosed. The composition includes, in combination, a blend of one or more organophosphorus compounds, one or more tannin compounds, and one or more water soluble metal compounds.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: October 22, 2002
    Assignee: Fremont Industries, Inc.
    Inventors: Michael T. Oldsberg, Bruce D. Busch
  • Chemical dispensing system
    Patent number: 5865343
    Abstract: A dispensing system for particulate solid chemical materials is disclosed that includes a charging hopper for receiving a sealed chemical container of solid particulate material to be dispersed, a delivery pipe attached to the charging hopper for conducting materials from the hopper by gravity, a seal piercing means disposed in the charging hopper for opening the sealed container and allowing the solid particulate material to flow from the chemical container into the delivery pipe and a liquid rinsing device including a discharge pipe member for delivering rinse liquid to rinse the hopper and chemical container.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: February 2, 1999
    Assignee: Fremont Industries, Inc.
    Inventors: Bruce D. Busch, Michael T. Oldsberg