This inventor holds 1 USPTO granted patent. Top assignee: Bell Telephone Laboratories. Active years: 1982.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1982
Title: Innovations of Francis G Joyal
Introduction
Francis G Joyal is a notable inventor based in Groveland, MA (US). He has made significant contributions to the field of waveguide technology, particularly in the design of filters. His work has been recognized for its innovative approach to resonator coupling within rectangular waveguides.
Latest Patents
Francis G Joyal holds a patent for a "Waveguide filter employing common phase plane coupling." This invention includes both bandstop and bandpass filters that utilize broad and narrow wall resonator coupling in a rectangular waveguide. The bandstop filter features resonators that resonate at a common frequency to provide a two-pole bandstop response, while the compact bandpass filter employs pairs of resonators to achieve tone rejection at different points in the waveguide.
Career Highlights
Joyal has worked at Bell Telephone Laboratories, where he has been involved in various innovative projects. His expertise in waveguide technology has contributed to advancements in telecommunications and signal processing.
Collaborations
He has collaborated with Chung-Li Ren, further enhancing the research and development of waveguide filters. Their partnership has led to significant improvements in the efficiency and effectiveness of these technologies.
Conclusion
Francis G Joyal's contributions to waveguide technology and his innovative patent demonstrate his impact on the field. His work continues to influence advancements in telecommunications and signal processing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile