Tipp-Ex errors" (German: "Tippfehler"). He subsequently founded a company of the same name. Shortly after that a "Tipp-Ex Sales & Distribution" company (Tipp-Ex Vertrieb GmbH & Co. KG) was founded in Frankfurt by Otto Carls. This company still exists under the name of Tipp-Ex GmbH & Co. KG close to Frankfurt. "Tipp-Ex" became a registered trademark with the German patent office in 1987. Earlier, in 1951, Bette Nesmith Graham invented the first correction fluid in her kitchen and began marketing the product in 1956 as "Mistake Out", later called Liquid Paper. Tipp-Ex GmbH only started to produce white correction fluid in
Bette Nesmith Graham an emphasis on product quality over profit motive. She also believed that women could bring a more nurturing and humanistic quality to the male world of business, and did so herself by including a greenbelt with a fish pond, an employee library, and a childcare center in her new company headquarters in 1975. Her only son, musician Michael Nesmith (best known as a member of The Monkees), inherited half of his mother's estate of over $50 million. A portion financed the Gihon Foundation which established the Council on Ideas, a think tank with a retreat center located north of Santa