Green Rubber is planning to list its shares on the Alternative Investment Market of the London Stock Exchange within six months, said the company's founder and chief executive Vinod B. Sekhar on the sidelines of a business conference in Singapore.

Sekhar, a Malaysian tycoon, declined to say how much Green Rubber is planning to raise by going public. He said the estimated value of the company is at least 130 million British pounds ($264 million; 191 million euros).

The company, which claims to have invented the world's first commercially viable, waste-free way to recycle tires, is a subsidiary of Petra Group, based in Kuala Lumpur, Malaysia.

Gibson, who was present at the announcement, said the company used "one of the most exciting technologies I've ever witnessed."

"It's genius. I've seen the process with my own eyes," Gibson said. "The process doesn't have any emissions, is very environmentally friendly, and so economic -- it is cheaper."

About 1 billion tires worldwide end up as waste each year, nearly 300 million of them in the United States. Most go into landfills or are burned, practices that are coming under more environmental scrutiny.