science · 01 January 1924 · 100 years ago
In 1924, the first U.S.patent for ink paste was issued to Frank Buckley Cooney of Minneapolis, Minn. (No. 1,479,533). Paste ink was designed to be rendered fluid for use by the addition of water, so that “a very satisfactory writing fluid is provided free of suspended matter and other imperfections.” Thus ink could be packaged in a collapsible lead vending tube in highly concentrated form. This also had the benefit of reducing shipping costs. Four fluid ounces of paste would produce one gallon of ink after dilution, free from the suspended matter associated with concentrated ink in the form of powders or tablets. It was manufactured as Cooney's Ink Paste, from 10 Feb 1923, by the Standard Ink Co in the same city.
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