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Liquid graphite pencils are pencils that write like pens. The technology was first invented in 1955 by Scripto and Parker Pens. Scripto's liquid graphite formula came out about three months before Parker's liquid lead formula. To avoid a lengthy patent fight the two companies agreed to share their formulas. [38]
In 1955, Scripto was the first to introduce what it called Fluidlead. This was a pencil that wrote like a pen using liquid graphite. Another company, Parker Pens, had developed a similar product called Liquid Lead that was a few months behind Scripto in production. To avoid a costly patent fight the two companies agreed to share their formulas ...
Having low-grit graphite, or even better, no-grit graphite (ultra high purity), is highly desirable. It can be used as a dry powder, in water or oil, or as colloidal graphite (a permanent suspension in a liquid). An estimate based on USGS graphite consumption statistics indicates that 2,200 tonnes were used in this fashion in 2005. [50]
If you'll recall, the Liquid Pencil first increased nerd heartbeats around the world a week and a half ago, when it was launched promising to write like a pen, erase like a pencil, and eventually ...
Parker Duofold desk set, 1930 Parker Jotter pen. In 1954, Parker released the Parker Jotter ballpoint [9] pen with its original nylon body and inverted "V" clip. The Jotter would go on to sell over 750 million units during its history. In 1955, the company introduced its Liquid Lead pencil, which used liquid graphite to write like a pen.
Conté. Conté (French pronunciation: [kɔ̃te]), also known as Conté sticks or Conté crayons, are a drawing medium composed of compressed powdered graphite or charcoal mixed with a clay base, square in cross-section. They were invented in 1795 by Nicolas-Jacques Conté, who created the combination of clay and graphite in response to the ...