Lipid protein bilayer model was proposed by

The lipid-protein bilayer model was proposed by Danieli and Davson.
It was a model of the plasma membrane of a cell, proposed in 1935 by Hugh Davson and James Danielli.
The model describes a phospholipid bilayer that lies between two layers of globular proteins, which are both trilaminar and lipoprotinious.
The model proposed an explanation for why certain substances were not able to pass through cell membranes, while also accounting for the thinness of membranes.