Not all that exciting in itself, but the first of what was to become the powerhouse inventive capital of the world...and still does a pretty good job.
The First Patent Granted in the United States
By Mary Bellis
Copy of the first U.S. patent issued and signed by George Washington in 1790.
The patent grant you see reproduced above was the
first one issued by the United States, to Samuel Hopkins of Pittsford,
Vermont in 1790. Two other patents were granted that year: one for a
special process of making candles and one for improved flour milling
machinery. The Hopkins patent was for an "Improvement, not known before
such Discovery, in the making of Pot ash and Pearl ash by a new
apparatus and Process", and was granted for a term of fourteen years.
The name potash refers to several potassium
salts, mild alkalis, which were derived from the ashes of timber or
other plants. It was also known in a caustic form when mixed with lime.
In reacting with fats or oils, potash produced a soft soap. It was an
essential ingredient in the manufacture of glass, alum (salts of
aluminum--used chiefly in medicine), and saltpeter (an important
ingredient in gun powder). Potash also played an important role in
bleaching, mining, metallurgy, and other industrial interests. Its many
applications served as an indication of the emerging chemical industry
in the nineteenth century.
In the summer of 1956, the Vermont Historic Sites Commission
erected a marker at the former residence of Samuel Hopkins. The original
patent granted to him still exists in the collections of the Chicago
Historical Society.
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