Patent 7735351 was granted and assigned to Memsic on June, 2010 by the United States Patent and Trademark Office.
A system measures an amount of wear in athletic footwear by measuring the amount of shock transmitted to a user. The measured shock is used to indicate an amount of how much cushioning has been lost by the footwear. The amount of wear is proportional to the loss of cushioning and an increase in transmitted shock to the user.