Graphene Technologies, founded in 2007 and based in Novato, California, developed a unique, patented and eco-friendly way to synthesize graphene (and other carbon-based materials) from carbon dioxide (CO2).
In July 2014, Graphene Technologies signed an agreement with Stratasys to co-develop graphene-enhanced 3D printing materials. In 2016 the company changed its focus to development of graphene-based foams.
It seems as if the company is no longer in business.
31-G Commercial Boulevard
Novato, CA 94949