Koh-I-Noor colored drawing pencils. Koh-I-Noor founder Joseph Hardtmuth invented the process for manufacturing graphite-based pencils in 1790. In 1848, Joseph's sons, Karl and Ludwig, founded the world's first manufacturing plant dedicated to the production of pencils. Located in the Czech Republic, it remains one of Europe's finest pencil manufacturing facilities. We feature the Koh-I-Noor woodless colored and graphite drawing pencils.