Chicago, IL, United States of America

Francis F Tong

This inventor holds 1 USPTO granted patent. Top assignee: Zenith Electronics Corporation. Active years: 1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Francis F Tong. Retrieved from https://idiyas.com/inventor/francis-f-tong

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 1985

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1 patent (USPTO):Explore Patents

Title: The Innovations of Francis F. Tong

Introduction

Francis F. Tong is a notable inventor based in Chicago, IL (US). He has made significant contributions to the field of electronics, particularly in the development of UHF tuning systems. His work has led to advancements that enhance the performance and reliability of radio frequency applications.

Latest Patents

Francis F. Tong holds a patent for a UHF RF Amplifier and AGC system. This innovative UHF tuning system provides linear high gain operation across the entire UHF band. It utilizes a field effect transistor (FET) amplifier to couple a received RF signal to a mixer, which develops an IF signal. The IF signal is then processed by a signal regulating diode. An AGC control signal is derived from the IF stage to control the gain of the FET amplifier. This arrangement allows the FET to operate at a lower voltage, improving thermal efficiency and reliability while maintaining a high, flat gain characteristic over the UHF band.

Career Highlights

Francis F. Tong has had a distinguished career, working at Zenith Electronics Corporation. His expertise in electronics and innovation has positioned him as a key figure in the development of advanced RF technologies. His contributions have not only enhanced product performance but have also paved the way for future innovations in the field.

Collaborations

Francis has collaborated with various professionals in the industry, including his coworker Harmon P. Vaughter. These collaborations have fostered an environment of innovation and have led to the successful development of cutting-edge technologies.

Conclusion

Francis F. Tong's work in the field of UHF RF technology exemplifies the impact of innovation on modern electronics. His patent for the UHF RF Amplifier and AGC system showcases his commitment to enhancing performance and reliability in radio frequency applications. His contributions continue to influence the industry and inspire future inventors.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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