A phase transition golf ball comprises a phase transition material. The phase transition material may optionally include a microwave susceptor or an induction susceptor. The phase transition material preferably comprises an ethylene acid copolymer, or an ionomer of an ethylene acid copolymer. The performance...http://www.google.se/patents/US8088026?utm_source=gb-gplus-sharePatent US8088026 - Phase transition golf ball and method of use
