Patents by Inventor Sandra Woods

Sandra Woods 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).

  • Support aerated biofilm reactor
    Patent number: 5116506
    Abstract: A gas permeable membrane divides a reactor vessel into a liquid compartment and a gas compartment. A biofilm is grown on the gas permeable membrane on the liquid side of the membrane. Teh gas permeable membrane is supported by the structure of the membrane itself. The biofilm is chosen from bacteria to degrade cetain pollutants by means of anaerobic fermentation, aerobic heterotrophic oxidation, dehalogenation, and hydrocarbon oxidation. This is accomplished by means of oxygen and alternate gases (i.e., methane) through the gas permeable membrane to certain bacteria growing on the liquid side of the gas permeable membrane.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: May 26, 1992
    Assignee: Oregon State University
    Inventors: Kenneth J. Williamson, Sandra Woods, Stuart E. Strand