Patents Represented by Attorney, Agent or Law Firm Thomas R. Lange
  • Reverse osmosis filtering apparatus with concentrate dilution
    Patent number: 6299766
    Abstract: Liquid filtering apparatus includes a plurality of reverse osmosis filters for receiving seriatim under pressure a mixture of feed liquid and recirculated concentrate. Feed liquid such as salt water is introduced into the inlet of each reverse osmosis filter to dilute the recirculated concentrate.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: October 9, 2001
    Inventor: Clark Permar
  • Portable support pillow
    Patent number: D599150
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: September 1, 2009
    Inventor: John Mittelstadt