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The first U.S. patent was granted to Samuel Hopkins for a process of making potash, an ingredient used in fertilizer on July 31. President George Washington signed the first patent.
The first US Patent - USX1I1 was signed by President George Washington, Attorney General Edmund Randolph, and Secretary of State Thomas Jefferson. The other U.S. patents issued that year were for a new candle-making process and Oliver Evans's flour-milling machinery.
Hopkins also received the first "Canadian" patent from the Parliament of Lower Canada in 1791, issued "by the Governor General in Council to Angus MacDonnel, a Scottish soldier garrisoned at Quebec City, and to Samuel Hopkins, for processes to make potash and soap from wood ash.
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