Big Red
When I first started working in oil and gas exploration it was with Halliburton - commonly referred to as Big Red. (Back then, Halliburton was relatively unknown outside that industry but was, in fact, a multi-national employing over 100,000 people worldwide. It got better known following contracts with it's broader engineering side, all acquired through buy-outs, and the fact that it's CEO became US VP).
Anyway, they were known as Big Red before Oracle was a gleam in anyone's eye so why hasn't Halliburton started sueing for copyright of their name? </sarcasm>