Today in 1871, US Patent 121902 A was issued, an invention of Jacob Seeger and John Boyd, for their “Improvement in Preserving and Using Hops in Brewing.” There’s no Abstract, although in the description it includes these claims:

It is well known that the active principle of hops is soon dissipated and the flavor changed or lost upon exposure to atmospheric action, and that, therefore, fresh hops command in the market two or three fold the price of hops grown the year previous. They are also readily injured by dampness, and their shipment by water is, therefore, attended with risk.

We propose by grinding or otherwise pulverizing the hops, and by then packing the same in air-tight packages to secure the following advantages in an improved article of manufacture and trade: First, the bulk is reduced at least fifty per cent. in packing the hops after being pulverized. Second, the hops pulverized and packed in air-tight vessels or packages may be stored for an indefinite length of time without deterioration as to quality, weight, or flavor. Third, the expense and labor of transportation is greatly reduced. Fourth, hops pulverized and packed in air-tight packages may be transported by Water-carriage without risk or damage by dampness. For the purpose of retail trade the pulverized hops are packed in cans or packages holding a pound, more or less, while for the convenience of large consumers, breweries, &c., the packages may be boxes or barrels. In packing pulverized hops the contents of an ordinary bale may be reduced to the dimensions of a flour-barrel, and, therefore, the labor of handling and the expense of transportation will be proportionately reduced.

The large consumer is enabled by our method to store his years supply without danger of deterioration as to quality, flavor, or weight, and with a material saving as to quantity required and space occupied. The dealer is enabled by our method to handle his hops and to ship them to any market without risk from atmospheric causes or dampness, which now makes a material advance in the price in markets remote from the place of production; or he can hold his stock over and wait an advance in price. This latter fact will tend to equalize prices and relieve the market of a glut at one time or a dearth at another.