John Emmett Freeman

Title: John Emmett Freeman: Innovator in Audio Transducer Technology

Introduction

John Emmett Freeman is a notable inventor based in Kempton, IN (US). He has made significant contributions to the field of audio transducer technology, holding a total of 4 patents. His innovative work focuses on the development of capacitive audio transducers, which are essential components in modern audio devices.

Latest Patents

Freeman's latest patents include a "Process of forming a capacitative audio transducer" and a "Process of making an all-silicon microphone." Both patents describe a process that involves an all-silicon monolithic construction, utilizing capacitive plates defined by doped single-crystal silicon layers. The capacitive plates are created by etching the single-crystal silicon layers, and the capacitive gap is accurately established through wafer bonding. This innovative approach allows for high-volume manufacturing practices, making the transducers more accessible for production.

Career Highlights

Freeman is currently associated with Delphi Technologies, Inc., where he continues to push the boundaries of audio technology. His work has not only advanced the field but has also paved the way for future innovations in audio transducer design and manufacturing.

Collaborations

Throughout his career, Freeman has collaborated with talented individuals such as John Carl Christenson and Steven Edward Staller. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

John Emmett Freeman's contributions to audio transducer technology exemplify the spirit of innovation. His patents and ongoing work at Delphi Technologies, Inc. highlight his commitment to advancing the field and improving audio technology for future generations.