AdvanSource Biomaterials Corp. has filed a patent for its newly launched ChronoSil polymer product, a silicone-urethane copolymer. This patent application relates to silicone-urethane copolymers and methods for making ChronoSil. ChronoSil can have many physical properties which are usually associated with polyurethanes, but also the feel and characteristics of silicones. The company debuted the product at MedTech Ireland Medical Design and Manufacturing Exhibition in Galway, Ireland.