Guided Ultrasonics Ltd.
Guided Ultrasonics Ltd. designs, manufactures and supports equipment that uses long range ultrasonics (guided waves) to inspect long lengths of metal pipework.
http://www.guided-ultrasonics.com

Bullen Ultrasonics, Eaton, Ohio (USA)
Bullen Ultrasonics is the technology leader in ultrasonic machining. We have developed and perfected machining methods to match the demands of applications requiring ultrasonic processing. With our considerable experience in precision machining, coupled with our state-of-the-art facilities, we can handle your specific requirements.
http://www.bullen-ultrasonics.com/

Chris Cheers' Power Ultrasonics web site
Independent guide to high power ultrasonics - with a database of industrial suppliers and descriptions of equipment and processes including ultrasonic plastic welding, ultrasonic metal welding, ultrasonic cleaning and sonochemistry.
http://www.powerultrasonics.com

Computational Ultrasonics
Bioacoustics Research lab
http://www.brl.uiuc.edu/Projects/comp.htm

Department of Ultrasonics and Acoustics
Uni Duisburg (Germany)
http://www.uni-duisburg.de/FB9/UST/welcome.htm

Sonobond Ultrasonics
Sonobond Ultrasonics is the smart choice for ultrasonic metal welders, textile bonders, battery assembly machinery and photovoltaic welding. With more than 48 years of experience, Sonobond is the leading name in textile bonding, filter assembly, wire welding and more.
http://www.sonobondultrasonics.com/

University of Bath
Underwater acoustics and medical ultrasonics
http://www.bath.ac.uk/~pyscmd/acoustics/

Hielscher
he ultrasonic processor UIS250L is used for the acceleration of sieving processes alternatively or complementary to the classical low frequency vibrators.
http://www.hielscher.com/ultrasonics/sieve_06.htm

Zenith Ultrasonics, Inc.
Industrial and Precision Ultrasonic Cleaners
http://www.zenith-ultrasonics.com/

IPPT-PAN
Department of Ultrasonics of Polish Academy of Science (Warsaw)
http://www.ippt.gov.pl/