John J. Zei

Knowles Electronics LLC designs and manufactures acoustic components. It offers a range of micro-acoustic, electro-mechanical and related technology platforms to support the business of their customers. The company was founded in 1946 and is headquartered in Itasca, IL.

Sivantos, Inc. manufactures hearing instruments. The firm offers hearing aids, hearing instruments technologies, digital hearing instruments, binaural hearing systems, digital aids, accessories, and wireless enhancement for hearing instruments. The company was founded in 1878 and is headquartered in Piscataway, NJ.

KoolSpan, Inc. develops hardware-based encryption and security applications. It protects data and voice communications over network-connected devices and the foundation for KoolSpan encryption is TrustChip, a hardware-based security platform delivered through a secure microSD processor. The company was founded by Jeffrey Mose, Rick Gutowski and Anthony C. Fascenda in 2003 and is headquartered in Bethesda, MD.

Rexton, Inc. is an American medical devices company that specializes in providing hearing aid technology services.

Knowles Electronics Holdings, Inc. offers a range of micro-acoustic, electro-mechanical and related technology platforms. The firm serves military, medical and security industries. The company was founded in 1946 and is headquartered in Itasca, IL.