per this article re why is graphene taking so long to market -...

per this article re why is graphene taking so long to market - it turns out that is not the case afterall

Time to market​

"It's amazing people say it's taking a long time because if you look back in history it's taken a lot longer for new tech to get to market than graphene has," says Frank Koppens from the Institute of Photonic Sciences (ICFO) in Barcelona, and the Scientific Chair of the Graphene Pavilion at last week's MWC 2018. "If you look at your smartphone, the technology inside it was invented 30-40 years ago – there are about 25 Nobel Prizes for Physics inside in there," he says. "All those inventions were made in the 1960s, and it wasn't until much later on that they found their way into consumer products."
Discovered a little over 10 years ago, it is already possible to buy products that contain graphene. "So I would say the opposite," says Koppens. "Graphene has been remarkably fast to market."​