Axion International Holdings Inc. has announced its third patent this year for a new fire-retardant coating technology. The coating formulation was patented earlier this year. Two new patents cover the process for modifying the formulation and applying the coating. The coating can be used on Axion’s structural composite materials and in other applications. The new patent “gives added protection, so either Axion or an Axion-approved entity can perform the coating procedure,” the company reports. The patent allows Axion to establish standards and approvals for the coating’s application. The coating can be used on Axion’s recycled plastic railroad ties, structural building products and other applications.