Is it possible to create a sonic washing machine which cleans the laundry by bombarding it with soundwaves? It would be similar to the machines used in hospitals which use soundwaves to break up kidney stones. The sound waves would break down grease and dirt and leave the laundry clean and fresh without the need for water or detergents.

The conspiracy theory was that the detergent and chemical companies suppressed his invention and ruined his reputation.
I was just wondering if it is even possible for ultra sonic vibrations could even loosen dirt/soil witout damaging the fabic.

Ultrasound turns clothes "ultraclean"

By Dennis Normile, Japan, Global Design News -- Design News, March 25, 2002

In the effort to improve the performance of appliances, two Japanese companies have hit upon the idea of applying ultrasound to washing machines, though they came up with very different applications of the technology

principle has been used in washing machines for commercial laundries and for jewelers