Patents by Inventor Parwinder S. Grewal

Parwinder S. Grewal 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).

  • Bi-phasic bioretention system
    Patent number: 7967979
    Abstract: An anaerobic to aerobic sequence enhances biological degradation of many organic pollutants. Exemplary embodiments provide systems and methods for effective treatment of storm-water runoff pollutants such as hydrocarbons, nitrates, phosphorus, and heavy metals using sediment filtration and adsorption, and biochemical processes under bi-phasic bioretention conditions. By integrating these pollution cleanup pro-usages into a single unit, this apparatus optimizes retention time of the runoff through the system and maximizes removal rates of runoff pollutants, resulting in more reliable and efficient treatment mechanism than previous systems.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: June 28, 2011
    Assignee: The Ohio State University
    Inventors: Parwinder S. Grewal, Edward L. McCoy, Warren A. Dick, Hanbae Yang
  • BI-PHASIC BIORETENTION SYSTEM
    Publication number: 20090261026
    Abstract: An anaerobic to aerobic sequence enhances biological degradation of many organic pollutants. Exemplary embodiments provide systems and methods for effective treatment of storm-water runoff pollutants such as hydrocarbons, nitrates, phosphorus, and heavy metals using sediment filtration and adsorption, and biochemical processes under bi-phasic bioretention conditions. By integrating these pollution cleanup pro-usages into a single unit, this apparatus optimizes retention time of the runoff through the system and maximizes removal rates of runoff pollutants, resulting in more reliable and efficient treatment mechanism than previous systems.
    Type: Application
    Filed: April 20, 2009
    Publication date: October 22, 2009
    Applicant: The Ohio State University
    Inventors: Parwinder S. Grewal, Edward L. McCoy, Warren A. Dick, Hanbae Yang