DEICON recently received the ‘Notice of Allowance’ and ‘Notice of Allowability’ from the U.S. Patent and Trademark Office allowing the claims listed in DEICON’s air suspended ‘adjustable tuned mass damper’ patent application. In these tuned mass dampers, only air springs are used as the suspension elements. Active control enables the air springs to provide both damping adjustability and stiffness adjustability and thus be used as both the resilient element (spring) and energy dissipating element (viscous damper). Fine-tuning and re-tuning of air suspended adjustable tuned mass dampers can readily be accomplished thru the software, using their active and semi-active stiffness control features, without physically modifying the hardware. Moreover, self-tuning capabilities can be incorporated into the controller of air suspended tuned mass dampers so that they continuously and automatically fine-tuned themselves to the target frequency.