Today in 1949, US Patent 2473395 A was issued, an invention of George Segal, for his “Hops Treatment.”

Hops in Yakima, Washington.

There’s no Abstract, although after a lengthly exposition about hop production prior to 1944, he eventually describes the process he’s patented, which appears to be about temperature and keeping the hops cold:

1. The method of treating hops which consists’ of freezing the hops while they still retain substantially their fresh aroma, the temperature being depressed through the temperature of about 30 F. at a rate not substantially greater than about 1 F. per hour, then holding the hops in frozen state for a storage period, then thawing the hops, and thereafter drying the hops.
2. The method of treating hops which consists of freezing the hops while they still retain their fresh aroma, holding the hops in frozen state for a storage period, then thawing the hops, the temperature being raised through the temperature of about 30 F. at a rate not substantially greater than about 1 F. per hour, and thereafter drying the hops.
3. The subject matter of claim 1, characterized of chilling hops, after picking, to a point somewhat above their freezing point and holding the hops chilled but unfrozen for less than about six weeks, then freezing the hops, the temperature theoretically or actually,
4. At a rate not substantially greater [?] being depressed through the temperature of about 30 F. at a rate not substantially greater than about 1 F. per hour, then holding the hope I in frozen state for a storage period, then thawing the hops, and thereafter drying the hops.
5. The subject matter of claim 4, characteri’zed by the fact that in thawing the hops, the temperature is raised through the temperature of about 30 F. at a rate not substantially greater.

A mountain of hops from the kiln, about to be baled and put into cold storage.