Tokyo, Japan

Ujiie Kazuaki

This inventor holds 1 USPTO granted patent. Top assignees: Hitachi Engineering Co., Ltd., Hitachi, Ltd.. Active years: 1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ujiie Kazuaki. Retrieved from https://idiyas.com/inventor/ujiie-kazuaki

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 = 20(Granted Patents)


Company Filing History:


Years Active: 1991

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1 patent (USPTO):Explore Patents

Title: Ujiie Kazuaki: Innovator in Semiconductor Technology

Introduction

Ujiie Kazuaki is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of programmable read-only memory.

Latest Patents

Ujiie holds a patent for a programmable read-only memory that is capable of controlling internal operations in a semiconductor integrated circuit device. This innovation allows for both normal writing operations and writing operations using an external voltage. The design enables margin measurement, high-voltage testing, and accelerated testing even after packaging. Additionally, the device features a mode selector with multiple latch circuits that operate at different timings, allowing for an increased number of operating modes without the need for additional pins.

Career Highlights

Throughout his career, Ujiie has worked with prominent companies such as Hitachi, Ltd. and Hitachi Engineering Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Ujiie has collaborated with various professionals in the field, including his coworker Shinji Nabetani. Their joint efforts have further advanced the development of semiconductor technologies.

Conclusion

Ujiie Kazuaki's contributions to semiconductor technology through his innovative patent demonstrate his significant role in the industry. His work continues to influence advancements in programmable memory 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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