And while it's far from a mainstream brand, it's gone from total obscurity on its 2003 incorporation to being something of a household name in just a decade and a half. (evo.co.uk)
Working on math alone and in total obscurity ever since he received his Ph.D. at Purdue University in 1991, Zhang had solved a problem in number theory known as the twin primes conjecture, which had confounded leading experts for millennia. (sciencemag.org)
For the next 60 years, he painted in almost total obscurity. (nytimes.com)