Chungcheongbuk-do, South Korea

Kyeong Man Ra

This inventor holds 8 USPTO granted patents. Top assignees: Lg Semicon Co., Ltd., Hyundai Electronics Industries Co. Ltd.. Active years: 1998-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kyeong Man Ra. Retrieved from https://idiyas.com/inventor/kyeong-man-ra

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 = 1.2

ph-index = 6

Forward Citations = 53(Granted Patents)


Location History:

  • Cheonju, KR (1998)
  • Cheongju, KR (2000)
  • Chungcheongbuk-do, KR (1998 - 2002)

Company Filing History:


Years Active: 1998-2002

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8 patents (USPTO):Explore Patents

Title: Kyeong Man Ra: Innovator in Semiconductor Memory Technology

Introduction

Kyeong Man Ra is a prominent inventor based in Chungcheongbuk-do, South Korea. He has made significant contributions to the field of semiconductor memory technology, holding a total of 8 patents. His innovative work has paved the way for advancements in nonvolatile memory devices.

Latest Patents

One of Kyeong Man Ra's latest patents is focused on a nonvolatile semiconductor memory and method of fabrication. This invention describes a contactless, nonvolatile metal oxide semiconductor memory device featuring a rectangular array of memory cells interconnected by word-lines and bit-lines. Each memory cell consists of a structurally asymmetrical pair of floating gate MOS field effect transistors that share a common source region within a semiconductor substrate. The unique asymmetry allows for simultaneous programming, reading, and monitoring of the cell. Additionally, the floating gate structure enhances capacitive coupling with the control gate, facilitating efficient operation. Another notable patent is the reference memory cell initialization circuit and method, which outlines a circuit designed to initialize a reference memory cell effectively. This circuit includes multiple voltage sources and switches that control the programming and erasing processes of the reference memory cell.

Career Highlights

Kyeong Man Ra has worked with notable companies in the semiconductor industry, including LG Semicon Co., Ltd. and Hyundai Electronics Industries Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Throughout his career, Kyeong Man Ra has collaborated with talented individuals such as Woong Lim Choi and Kyung Myung Hur, who have also contributed to advancements in the field.

Conclusion

Kyeong Man Ra's innovative contributions to semiconductor memory technology have established him as a key figure in the industry. His patents reflect a deep understanding of memory device fabrication and functionality, showcasing his commitment to advancing 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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