05098575 is referenced by 41 patents and cites 7 patents.

A method and apparatus for reducing the concentration of a first substance in a first liquid by: (a) subjecting the first liquid to natural osmosis, via a first semipermeable body, with respect to an intermediate liquid, which intermediate liquid is a solution or suspension of a second substance in a second liquid, the second liquid being the same as the first liquid and passing through the first semipermeable body, the second substance being of larger molecular size than the first substance and not passing through the first semipermeable body, whereby the quantity of the second liquid in the intermediate liquid is increased; and then (b) subjecting the intermediate liquid to reverse osmosis under pressure via a second semipermeable body to pass therethrough the second liquid.

Title
Method and apparatus for processing liquid solutions of suspensions particularly useful in the desalination of saline water
Application Number
7/647087
Publication Number
5098575
Application Date
January 29, 1991
Publication Date
March 24, 1992
Inventor
Joseph Yaeli
8 Rachel St., 34401 Haifa
IL
Agent
Benjamin J Barish
IPC
B01D 61/00
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