3676335 is referenced by 6 patents and cites 13 patents.

Efficiency of reverse osmosis separation processes is enhanced by reducing the thickness of the boundary layer formed at the membrane-solution interface. This is accomplished by placing a second membrane, which is substantially permeable to the solution, in a close-spaced relationship to the reverse osmosis membrane. A portion of the solution is withdrawn from the space between the two membranes.

Process for effecting changes in solution concentrations
Application Number
Publication Number
Application Date
December 9, 1970
Publication Date
July 11, 1972
Mintz Milton S
Lacey Robert E
The United States of America represented by the Secretary of Interior
Southern Research Institute
B01d 13/00
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