Xolve (previously Graphene Solutions) was a manufacturer of purified and size selected carbon nanotubes, graphene and nanographene. The company was working to commercialize simple room temperature processing of graphene and other nanoparticle composites, solutions and coatings.
In December 2010, Xolve raised $2 million from both strategic and financial investors. In January 2015 Xolve raised $1.8 million (of a proposed $2.8 million funding round).
It seems as if Xolve is no longer in business.