In 1848, Joseph's sons, Karl and Ludwig, took over the family business, and the production was relocated to the Bohemian city of Budweis (České Budějovice, within the current Czech Republic). The products were given awards in many world exhibitions, including in 1855 in New York City, 1856, 1900 and 1925 in Paris, 1862 in London, 1882 in Vienna and 1905 in Milan.
At the 1889 World Fairin Paris, the Hardtmuths displayed their pencils rebranded as "Koh-I-Noor Hardtmuth". Each pencil was encased in a yellow cedar-wood barrel. The inspiration for the name was the Koh-i-Noor diamond (Persian for "Mountain of Light"), part of the Crown Jewels of the United Kingdom, and the largest diamond in the world at the time.
After the Second World War, Koh-i-Noor Hardtmuth was nationalized. It became privately held in 1992. Since 2007, it has been a member of the Czech parent company KOH-I-NOOR Holding a.s.
The company has production facilities in more than 80 countries.[4] It is also a contract manufacturer of small injection-moulded plastic products. Koh-i-Noor was a partner in making Jiří Barta's 2009 animated feature Toys In the Attic, and its pencils appear frequently throughout the film.[5][6]
