Patents by Inventor Walter Den

Walter Den 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).

  • WASTEWATER TREATMENT EQUIPMENT
    Publication number: 20050279626
    Abstract: A wastewater treatment equipment comprising a reaction tank, a plurality of anodic plates, a plurality of cathodic plates, a power supply and a collection device is provided. The reaction tank comprises an inlet and an outlet. The anodic plates and the cathodic plates are placed in a staggered order in the reaction tank. The power supply is electrically connected to the anodic plates and the cathodic plates. The collection device is disposed at the bottom of the reaction tank so the colloidal particles deposited at he bottom of the reaction tank can be removed.
    Type: Application
    Filed: March 3, 2005
    Publication date: December 22, 2005
    Inventors: Chihpin Huang, Walter Den
  • Apparatus and method for UV oxidation and microbiological decomposition of organic waste air
    Patent number: 6632659
    Abstract: The invention discloses an apparatus and a method for UV oxidation and microbiological decomposition of organic waste air. The invention provides an integrated system consisting of UV oxidation as a pretreatment process and biofiltration and biotrickling filtration, in which the organic pollutant residuals are decomposed with microorganisms.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: October 14, 2003
    Assignee: S.M. Sze
    Inventors: Walter Den, Massoud Pirbazari