Intel makes the microprocessors found in 80 percent of the world’s personal computers. Today, it is one of the most valuable brands in the world, with revenues exceeding $37 billion. In the early days, however, Intel microprocessors were known simply by their engineering numbers, such as “80386” or “80486.” Since numbers can’t be trademarked, competitors came out with their own “486” chips and Intel had no way to distinguish itself. Nor could consumers see Intel’s products, buried deep inside their PCs. Thus, Intel had a hard time convincing consumers to pay more for its high performance products.