Poughkeepsie, NY, United States of America

Joseph Juifu Chang

This inventor holds 1 USPTO granted patent. Top assignee: International Business Machines Corporation. Active years: 1978.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Joseph Juifu Chang. Retrieved from https://idiyas.com/inventor/joseph-juifu-chang

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 29(Granted Patents)


Company Filing History:


Years Active: 1978

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1 patent (USPTO):Explore Patents

Title: Joseph Juifu Chang: Innovator in Semiconductor Memory Technology

Introduction

Joseph Juifu Chang is a notable inventor based in Poughkeepsie, NY (US). He has made significant contributions to the field of semiconductor memory technology. His innovative work has led to the development of a unique memory array that enhances data storage capabilities.

Latest Patents

Chang holds a patent for the "Ultimate density non-volatile cross-point semiconductor memory array." This invention describes an extremely high-density memory array where every intersection between two insulated orthogonal sets of drive lines defines a non-volatile memory device. Each device utilizes the area directly under the intersection of sets of lines to selectively store charges under the control of suitable writing pulses. The reading process is accomplished through capacitive coupling, utilizing insulated metallic word lines orthogonal to doped bit lines defined within the surface of a semiconductor body.

Career Highlights

Joseph Juifu Chang is associated with the International Business Machines Corporation (IBM). His work at IBM has focused on advancing semiconductor technologies, particularly in memory storage solutions. His innovative approaches have contributed to the evolution of non-volatile memory systems.

Collaborations

Chang has collaborated with Patrick C. Arnett, working together on various projects within the semiconductor field. Their partnership has fostered advancements in memory technology and has led to the successful development of innovative solutions.

Conclusion

Joseph Juifu Chang's contributions to semiconductor memory technology exemplify the spirit of innovation. His patent for a high-density memory array showcases his expertise and commitment to advancing the field. Chang's work continues to influence the future of data storage solutions.

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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