It is not patented, trademarked, or service marked. Blockberry Creative officially trademarked the name (; lit. Zip2 trademarked "We Power the Press" as its official slogan and continued to grow. The exclamation mark is part of the trademarked name. DC Comics trademarked the Superman chest logo in August 1938. The names of the typefaces can be trademarked. Unhappy with the brand, Smith trademarked UGG. The name "Shanghai" was trademarked by Activision. These were the first engines officially designated Hemi, a name Chrysler had trademarked. The name was even trademarked to preserve the city's identity. The name stuck; the A's later trademarked it. In 2000, Vonderplanitz trademarked the name "Primal Diet". In 2007 Paris 4 trademarked also the brand "La Sorbonne". Billings developed a zinc alloy named grammium, which is trademarked. The phrase was trademarked by the university in 2005.