Patents by Inventor Ma Shangfu

Ma Shangfu 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).

  • Adjustable ventilation stack for a water filter system
    Patent number: 8371452
    Abstract: A water filter system including a filter housing having a filter element for filtering impurities from water and a ventilation stack movably connected to the filter housing for adjusting a position of the stack relative to a level of the water to release air from the water trapped by the filter element during filtration.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: February 12, 2013
    Assignee: Paragon Water Systems, Inc.
    Inventors: David Swain, Ma Shangfu
  • ADJUSTABLE VENTILATION STACK FOR A WATER FILTER SYSTEM
    Publication number: 20120061313
    Abstract: A water filter system including a filter housing having a filter element for filtering impurities from water and a ventilation stack movably connected to the filter housing for adjusting a position of the stack relative to a level of the water to release air from the water trapped by the filter element during filtration.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 15, 2012
    Applicant: Paragon Water Systems, Inc.
    Inventors: David Swain, Ma Shangfu