Today in 1966, US Patent 3271162 A was issued, an invention of Laurence R. Bishop, assigned to Watney Combe Reid & Company Ltd., for his “Process For Segregating Lupulin From Dried Hops.” There’s no Abstract, although in the description it includes this summary:

It is a principal object of the invention to enable a relatively concentrated form of lupulin to be separated from the dried hops. This concentrated material can then either be used as such, for boiling with wort or for adding to the brewed beer, or it can be subjected to extraction processes for the isolation of the respective active ingredients which can then be stored, with or without stabilization, until they are required for use. By isolating the lupulin in a relatively concentrated form, its storage under conditions which will preclude or minimize spoilage becomes very much easier and less expensive, while at the same time the large storage space hitherto required is freed for other purposes.