Some of the most interesting developments in the ink field can be found at companies focusing on specialty inks. One such company is Nocopi Technologies, a US-based publicly traded company (ticker: NNUP).  Headquartered in King of Prussia, PA, Nocopi is perhaps best known for reactive inks for children’s activity books and has been leveraging that expertise as their business expands.  Nocopi began in the early 1990s, developing technologies for inks in the anti-copy document security segment,...