Patents by Inventor Russ Schaffenberg

Russ Schaffenberg 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).

  • Package assembly for piperazine-based membranes
    Patent number: 7156997
    Abstract: A package assembly comprising a sealed water-impermeable bag enclosing: a spiral wound filtration element comprising a piperazine-based membrane, and an aqueous solution comprises a substantially non-oxidizable buffer having capacity to sequester at least 0.0025 moles per liter of hydrogen ions. The assembly preferably further includes a reducing agent. The assembly provides improved preservation for piperazine-based membranes and elements incorporating such membranes.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: January 2, 2007
    Assignees: Dow Global Technologies Inc., Filmtec Corporation
    Inventors: Allyn R. Marsh, Russ Schaffenberg, Steven D. Jons, Roy A. Davis
  • Package assembly for piperazine-based membranes
    Publication number: 20030098272
    Abstract: A package assembly comprising a sealed water-impermeable bag enclosing: a spiral wound filtration element comprising a piperazine-based membrane, and an aqueous solution comprises a substantially non-oxidizable buffer having capacity to sequester at least 0.0025 moles per liter of hydrogen ions. The assembly preferably further includes a reducing agent. The assembly provides improved preservation for piperazine-based membranes and elements incorporating such membranes.
    Type: Application
    Filed: October 5, 2001
    Publication date: May 29, 2003
    Inventors: Allyn R. Marsh, Russ Schaffenberg, Steven D. Jons, Roy A. Davis