Shigeyuki Hayakawa

This inventor holds 25 USPTO granted patents, primarily in Semiconductor Technology. Top assignees: Kabushiki Kaisha Toshiba, Kabush″ei Kaishr Toshiba. Active years: 1989-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeyuki Hayakawa. Retrieved from https://idiyas.com/inventor/shigeyuki-hayakawa

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

USPTO Granted Patents = 25

% Patents Active = 80.0

Average Co-Inventor Count = 1.9

ph-index = 11

Forward Citations = 487(Granted Patents)

Location History:

Yokohama, JP (1989 - 1994)
Chigasaki, JP (1995 - 1998)
Tokyo, JP (1999 - 2001)
Kawasaki, JP (1994 - 2002)
Kanagawa-ken, JP (2001 - 2002)
Yokosuka, JP (2005 - 2013)

Company Filing History:

24 out of 53,276

Kabushiki Kaisha Toshiba

patents

1 out of 1

Kabush″ei Kaishr Toshiba

patent

Years Active: 1989-2013

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Areas of Expertise:

Semiconductor Device

Integrated Circuit

Memory Circuit

Logic Circuit

Tristate Buffer

Fuse Data Reading

Anti-Fuse Memory

High Speed Circuit

Cache Memory System

Liquid Crystal Display

Static Random Access Memory

Impedance Matching Circuit

25 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8558390 - Semiconductor device (2013-10-15),

2. 7495310 - Fuse-data reading circuit (2009-02-24),

3. 7349281 - Anti-fuse memory circuit (2008-03-25),

4. 6977834 - Semiconductor integrated circuit device (2005-12-20),

5. 6459299 - Tristate buffer (2002-10-01),

6. 6437603 - Semiconductor integrated circuit having logical operation function (2002-08-20),

7. 6421264 - CAM Cell Circuit having decision circuit (2002-07-16),

8. 6418520 - Address converting circuit utilizing string comparison and carry information calculation (2002-07-09),

9. 6362645 - Logic circuits and carry-lookahead circuits (2002-03-26),

10. 6333644 - Logic circuits and carry-lookahead circuits (2001-12-25),

11. 6329838 - Logic circuits and carry-lookahead circuits (2001-12-11),

12. 6278298 - Current-sense type logic circuit and semiconductor integrated circuit using the same (2001-08-21),

13. 6188237 - Impedance matching circuit, high speed semiconductor integrated circuit employing the same and computer system employing the integrated circuit (2001-02-13),

14. 5920888 - Cache memory system having high and low speed and power consumption (1999-07-06),

15. 5712652 - Liquid crystal display device (1998-01-27),

Title: Shigeyuki Hayakawa: Innovator in Semiconductor Technology

Introduction

Shigeyuki Hayakawa is a notable inventor based in Yokosuka, Japan, recognized for his significant contributions to the field of semiconductor technology. With a remarkable portfolio of 25 patents, Hayakawa has played a vital role in developing innovative devices that enhance the performance and reliability of electronic circuits.

Latest Patents

Among his latest inventions, Hayakawa has patented a novel **semiconductor device**. This device features an intricate design, including lower and upper layer wirings that are aligned in the same direction. It incorporates intermediate wirings, comprising a first and second intermediate wiring, along with conductors that connect the lower layer wiring to the first intermediate wiring, and the upper layer wiring to the second. The design strategically utilizes a smaller number of third conductors that link the intermediate wirings, optimizing the overall structure.

Additionally, he has developed a **fuse-data reading circuit** within a semiconductor integrated circuit device. This innovative circuit utilizes a differential latch circuit that compares currents based on the resistance across target and reference fuse elements. This technology effectively determines the operational status of the first fuse element, indicating whether it has been cut.

Career Highlights

Shigeyuki Hayakawa has had a distinguished career in the technology sector, significantly contributing to leading companies such as Kabushiki Kaisha Toshiba and Toshiba Corporation. His work in these organizations has allowed him to explore cutting-edge semiconductor technologies and bring forth advanced innovations.

Collaborations

Throughout his career, Hayakawa has collaborated with talented professionals, including coworkers Kiyofumi Ochii and Tsuyoshi Midorikawa. These collaborations have undoubtedly influenced his research and development processes, fostering an environment of innovation and solution-oriented thinking.

Conclusion

Shigeyuki Hayakawa's dedication to advancing semiconductor technology through his 25 patents underscores his status as a prominent inventor in the field. His latest inventions, including the semiconductor device and fuse-data reading circuit, illustrate his expertise and commitment to enhancing electronic systems. As he continues to innovate, Hayakawa's work will likely inspire future developments in semiconductor 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]