Charles A Lee

This inventor holds 11 USPTO granted patents. Top assignees: Cornell University, Trw Limited. Active years: 1985-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Charles A Lee. Retrieved from https://idiyas.com/inventor/charles-a-lee-q5g7mkl9

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

Calculating rank

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 7

Forward Citations = 608(Granted Patents)

Company Filing History:

Years Active: 1985-1998

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5808517 - PTM signal generator combining outputs of multiple oscillators (1998-09-15),

2. 5652548 - PTM signal generator combining outputs of two same frequency oscillators (1997-07-29),

3. 5225797 - Dielectric waveguide-to-coplanar transmission line transitions (1993-07-06),

4. 5040020 - Self-aligned, high resolution resonant dielectric lithography (1991-08-13),

5. 4952446 - Ultra-thin semiconductor membranes (1990-08-28),

6. 4951099 - Opposed gate-source transistor (1990-08-21),

7. 4946735 - Ultra-thin semiconductor membranes (1990-08-07),

8. 4898804 - Self-aligned, high resolution resonant dielectric lithography (1990-02-06),

9. 4623849 - Broadband high power IMPATT amplifier circuit (1986-11-18),

10. 4587541 - Monolithic coplanar waveguide travelling wave transistor amplifier (1986-05-06),

11. 4551904 - Opposed gate-source transistor (1985-11-12),

Title: Innovations of Charles A. Lee

Introduction

Charles A. Lee is a notable inventor based in Ithaca, NY, with a remarkable portfolio of 11 patents. His work primarily focuses on high-frequency pulse-time modulation signal generators, which have significant applications in microwave and optical communication systems.

Latest Patents

One of his latest inventions is a PTM signal generator that combines the outputs of multiple oscillators. This high-frequency pulse-time modulation signal generator employs four or more high-frequency oscillators that are mutually locked in either a symmetric or antisymmetric mode through electronic phase shifters. The output signals from these oscillators are cascaded to form a PTM output, controlled by the phase shifters that shift the mutual locking back and forth. Another significant patent involves a PTM signal generator that combines outputs from two oscillators of the same frequency. This device utilizes an electronic phase shifter to switch the mutual locking of the oscillators, generating pulse-time modulated output pulses. The design is particularly suited for microwave communication systems operating between 50 and 200 GHz, as well as laser-based optical communication systems.

Career Highlights

Throughout his career, Charles A. Lee has contributed to various organizations, including the Cornell Research Foundation Inc. and TRW Limited. His innovative work has positioned him as a key figure in the field of signal generation technology.

Collaborations

Some of his notable coworkers include G. Conrad Dalman and Kurt Rauschenbach, who have collaborated with him on various projects.

Conclusion

Charles A. Lee's contributions to the field of signal generation through his innovative patents have made a significant impact on communication technologies. His work continues to influence advancements in both microwave and optical systems.

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]