Arb consultancy JCA managing director Jonathan Cocking said he was trademarking the product, which kills canker bacterium in trees' vascular systems.
Plugs of bark are removed around the chestnut and a tree infusion is screwed into the holes. The process takes an hour and after a year the tree refoliates, he said.
"We are rolling it out with a few high-profile programmes including one with English Heritage. The treatment is invasive, but it's a natural product. It's better to get cracking and save a few trees than run a 10-year study programme only to find at the end of it that all the horse chestnuts have died."
Cocking, based in Halifax, West Yorkshire, worked with a Dutch firm on the cure and aims to license the product this spring.