Loeb-Sourirajan reverse-osmosis membrane (1963)
Chemists Sidney Loeb and Srinivasa Sourirajan at the University of California, Los Angeles developed the first asymmetric membrane that could desalinate seawater by reverse osmosis. Their 1963 paper is widely credited with launching modern membrane desalination.
The membrane set off decades of scale-up work; the first major commercial reverse-osmosis plants opened in the 1970s.
Reverse osmosis is now the dominant desalination technology worldwide, but it leaves a concentrated brine byproduct that plants discharge back into the ocean.
Shows how long lab breakthroughs can take to reach industrial deployment, and frames the brine problem the Rochester system targets.
