Patents by Inventor Michael Shaefer

Michael Shaefer 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).

  • SYSTEMS AND METHODS FOR ENERGY STORAGE AND RECOVERY USING GAS EXPANSION AND COMPRESSION
    Publication number: 20130269330
    Abstract: In various embodiments, energy-storage systems are based upon an open-air arrangement in which pressurized gas is expanded in small batches from a high pressure of, e.g., several hundred atmospheres to atmospheric pressure. The systems may be sized and operated at a rate that allows for near isothermal expansion and compression of the gas.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 17, 2013
    Inventors: Troy O. McBride, Benjamin R. Bollinger, Michael Shaefer, Dax Kepshire