Patents by Inventor Darrin C. Elsom

Darrin C. Elsom 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).

  • Recirculation of wastewater in a filtration bed
    Patent number: 6540910
    Abstract: In a filtration system wherein wastewater is recirculated back through a filtration bed for a second pass therethrough, the recirculated wastewater being directed through a set of secondary distribution pipes located in the filtration bed below those distribution pipes through which the wastewater is first carried through the bed, with hood elements arched over the respective secondary pipes.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: April 1, 2003
    Inventors: Ewald F. Schwarzenegger, Darrin C. Elsom
  • RECIRCULATION OF WASTEWATER IN A FILTRATION BED
    Publication number: 20030038067
    Abstract: In a filtration system wherein wastewater is recirculated back through a filtration bed for a second pass therethrough, the recirculated wastewater being directed through a set of secondary distribution pipes located in the filtration bed below those distribution pipes through which the wastewater is first carried through the bed, with hood elements arched over the respective secondary pipes.
    Type: Application
    Filed: August 23, 2001
    Publication date: February 27, 2003
    Inventors: Ewald F. Schwarzenegger, Darrin C. Elsom