Denver, CO, United States of America

Frank C Liu

This inventor holds 1 USPTO granted patent. Top assignee: At&t Bell Laboratories. Active years: 1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Frank C Liu. Retrieved from https://idiyas.com/inventor/frank-c-liu-qg7hd61a

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 = 3.0

ph-index = 1

Forward Citations = 61(Granted Patents)


Company Filing History:


Years Active: 1991

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1 patent (USPTO):Explore Patents

Title: Frank C Liu: Innovator in Voice Messaging Technology

Introduction

Frank C Liu is a notable inventor based in Denver, CO (US). He has made significant contributions to the field of voice messaging technology. His innovative approach has led to the development of a unique voice message system that utilizes synthetic speech.

Latest Patents

Frank C Liu holds a patent for a voice message system using synthetic speech. This system stores subscriber-specific voice phrases, such as names, using digitally encoded phonemes. Common system voice phrases are stored using digitally encoded voice samples. The system forms voice announcements by combining selected common system voice phrases with subscriber-specific voice phrases generated from phonemes. When a voice mail message is sent from one message system to another, the sender's identification is transmitted using digitally encoded phonemes in the message header. The destination message system then uses these phonemes to generate the sender's identification as a synthetic voice signal. He has 1 patent to his name.

Career Highlights

Frank C Liu is associated with AT&T Bell Laboratories, where he has been instrumental in advancing voice messaging technologies. His work has paved the way for more personalized and efficient communication methods.

Collaborations

Frank has collaborated with notable colleagues, including Lawrence J Haas and Garry D Kepley, contributing to various projects that enhance voice messaging systems.

Conclusion

Frank C Liu's innovative work in voice messaging technology exemplifies the impact of synthetic speech in modern communication. His contributions continue to influence the way we interact through voice messaging 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]
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