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For the Inventor, By the Inventor

Altamonte Springs, FL, United States of America

Yu-Chun Liu

This inventor holds 5 USPTO granted patents and 1 published patent application. Top assignee: Qualcomm Incorporated. Active years: 2019-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yu-Chun Liu. Retrieved from https://idiyas.com/inventor/yu-chun-liu-u2of0lyc

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

Calculating rank
USPTO Granted Patents = 5 

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:

goldMedal5 out of 45,060 
 
Qualcomm Incorporated
 patents

Years Active: 2019-2025

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5 patents (USPTO):Explore Patents
1. 12255374 - Frequency selective coupler (2025-03-18),
2. 11606075 - Tunable, broadband directional coupler circuits employing an additional, selectable coupling circuit(s) for controlling frequency response (2023-03-14),
3. 11404388 - Surface mount passive component shorted together and a die (2022-08-02),
4. 11202375 - Surface mount passive component shorted together (2021-12-14),
5. 10447226 - Three dimensional inductor-capacitor apparatus and method of fabricating (2019-10-15),

Title: Innovations of Yu-Chun Liu

Introduction

Yu-Chun Liu is a notable inventor based in Altamonte Springs, FL (US). He has made significant contributions to the field of telecommunications and signal processing, holding a total of 5 patents. His work primarily focuses on frequency selective couplers and directional coupler circuits.

Latest Patents

One of his latest patents is a frequency selective coupler designed as a harmonic rejection filter. This innovative coupler includes an electromagnetic element that electromagnetically couples to a signal path between the output of a power amplifier and an antenna. It features an impedance network that provides a harmonic filter response and an electrically unconnected coupled port connected to the electromagnetic element. Another significant patent involves tunable, broadband directional coupler circuits. These circuits employ additional, selectable coupling circuits to control frequency response. The design allows for the selective activation of additional coupling lines, which can change the frequency response of the directional coupler by extending the length of the primary coupling line through mutual inductance.

Career Highlights

Yu-Chun Liu is currently employed at Qualcomm Incorporated, a leading company in the telecommunications industry. His work at Qualcomm has allowed him to develop cutting-edge technologies that enhance communication systems.

Collaborations

He has collaborated with talented coworkers such as Arjun Ravindran and Xiaomin Yang, contributing to various innovative projects within the company.

Conclusion

Yu-Chun Liu's contributions to the field of telecommunications through his patents and work at Qualcomm demonstrate his expertise and commitment to innovation. His inventions continue to influence advancements in signal processing technology.

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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