Piezoelectric ceramic components, namely, discs, hollow cylinders, solid cylinders, hemispheres and rectangular bars for use in the manufacture of transducers, hydrophones, sonar equipment, and ultrasonic equipment; Piezoelectric ceramic materials and products, namely, piezoelectric ceramic wafers, discs, tubes, and composites for use in the manufacture of medical ultrasound imaging transducers, ink jet heads, hydrophones; Ultrasonic and acoustic transducers; depth sounders; hydrophones; Sonar; marine and underwater surveillance and navigation equipment, namely, long-baseline, short-baseline, supershort-baseline and ultrashort-baseline transducers and signal conditioning and processing electronic circuit boards and software, and harbor protection and diver detection transducers and signal conditioning and processing electronic circuit boards and software; marine transceivers and transponders; precision homing and docking equipment, namely, transducers and signal conditioning and processing electronic circuit boards and software that enable unmanned underwater vehicles to rendezvous with launch and recovery platforms; flexible array systems comprised primarily of transducers, signal conditioning and processing electronic circuit boards and software and mechanical packaging for dynamic, towed applications or static, fixed applications; acoustic communication links; range systems comprised primarily of transponders, transducers, signal conditioning and processing electronic circuit boards and software and mechanical packaging components

Manufacturing services for others in the field of piezoelectric ceramic materials and products; Manufacturing services for others in the field of ultrasonic and acoustic transducers, depth sounders and hydrophones; Custom manufacturing services for others in the field of underwater navigation and sonar equipment and products

Engineering and design of products for others in the field of piezoelectric ceramic materials and products; Engineering and design of products for others in the field of underwater navigation and sonar equipment and products; Engineering and design of products for others in the field of ultrasonic and acoustic transducers, depth sounders and hydrophones