Patents by Inventor Todd D Ritter

Todd D Ritter 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).

  • Multiple layered membrane with thin fluorine containing polymer layer
    Patent number: 7674514
    Abstract: A multi-layer membrane includes a fluorine containing layer and a substrate which are joined through spray coating and heat treatment in a multi-step technique.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: March 9, 2010
    Inventors: Thomas E Frankel, Seoungil Kang, Todd D Ritter, Hong-suk Kim
  • Fluorinated elastomeric gas diffuser membrane
    Publication number: 20100032851
    Abstract: The present invention relates generally to a structure for a diffused aeration system. More particularly, the invention encompasses a diffuser membrane where at least a portion of the surface has been treated with at least one layer of fluorine, to form a fluorinated elastomeric gas diffuser membrane. The invention also includes the deposition of fluorine atoms on the surface of a non-fluorine containing membrane to create a permanent fluoro-elastomeric surface layer. Tubular and disc diffuser members are also disclosed that have at least a portion of them treated with at least one layer of fluorine. A process of making the inventive diffuser membrane is also disclosed.
    Type: Application
    Filed: August 7, 2008
    Publication date: February 11, 2010
    Inventors: Thomas E. Frankel, Seoungil Kang, Todd D. Ritter