Company Filing History:

33 out of 21,351

Mitsubishi Denki Kabushiki Kaisha

patents

2 out of 3,781

Renesas Technology Corp.

patents

1 out of 1

Renesas Solutions Corporation

patent

4. 1 out of 832,680

Other

patents

where one patent can have more than one assignee

Years Active: 1990-2006

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36 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7002846 - Non-volatile semiconductor memory device with memory transistor (2006-02-21),

2. 6996006 - Semiconductor memory preventing unauthorized copying (2006-02-07),

3. 6567316 - Nonvolatile semiconductor memory device and method of erasing data of nonvolatile semiconductor memory device (2003-05-20),

4. 6515908 - Nonvolatile semiconductor memory device having reduced erase time and method of erasing data of the same (2003-02-04),

5. 6515900 - Non-volatile memory with background operation function (2003-02-04),

6. 6483748 - Nonvolatile memory with background operation function (2002-11-19),

7. 6473345 - SEMICONDUCTOR MEMORY DEVICE WHICH CAN BE SIMULTANEOUSLY TESTED EVEN WHEN THE NUMBER OF SEMICONDUCTOR MEMORY DEVICES IS LARGE AND SEMICONDUCTOR WAFER ON WHICH THE SEMICONDUCTOR MEMORY DEVICES ARE FORMED (2002-10-29),

8. 6466508 - Semiconductor memory device having high-speed read function (2002-10-15),

9. 6388921 - Nonvolatile semiconductor memory device with improved reliability and operation speed (2002-05-14),

10. 6385086 - Nonvolatile semiconductor memory device capable of high speed generation of rewrite voltage (2002-05-07),

11. 6330192 - Nonvolatile semiconductor memory device and method of erasing data of nonvolatile semiconductor memory device (2001-12-11),

12. 6243292 - Nonvolatile semiconductor memory device capable of reducing memory array area (2001-06-05),

13. 6008674 - Semiconductor integrated circuit device with adjustable high voltage (1999-12-28),

14. 5959890 - Non-volatile semiconductor memory device (1999-09-28),

15. 5940283 - High voltage generating device having variable boosting capability (1999-08-17),

Title: Yoshikazu Miyawaki: Innovator in Semiconductor Memory Technology

Introduction

Yoshikazu Miyawaki, based in Hyogo, Japan, is a prolific inventor known for his contributions to semiconductor memory technology. With a remarkable portfolio of 36 patents, he has been at the forefront of innovation in non-volatile memory devices, ensuring advancements in data storage and security.

Latest Patents

Among his latest patents, two significant innovations stand out. The first is a non-volatile semiconductor memory device with memory transistor. This device enhances data writing processes by detecting the threshold voltage of a memory transistor, which is critical for flash memory functionality. By adjusting the write pulse signal using a step voltage instead of a fixed voltage, it minimizes variations in drain current, resulting in more efficient data management.

The second patent, titled semiconductor memory preventing unauthorized copying, introduces a dual memory mat system. This innovation provides an isolated memory area where sensitive data can be securely stored and protected from unauthorized access. A comparing circuit serves to validate security information, returning a status that indicates whether the memory has been compromised, thus ensuring the integrity of the semiconductor memory.

Career Highlights

Yoshikazu has had an illustrious career with prestigious companies, including Mitsubishi Electric Corporation and Renesas Technology Corporation. His work with these organizations has significantly enhanced the capabilities and security features of semiconductor technologies, establishing him as a leader in this vital field of innovation.

Collaborations

Throughout his career, Yoshikazu has collaborated with notable colleagues, including Takeshi Nakayama and Yasushi Terada. Their collective expertise has driven forward-thinking solutions and propelled advancements in semiconductor memory systems.

Conclusion

Yoshikazu Miyawaki's contributions to the field of semiconductor memory technology are invaluable. With a strong focus on improving data integrity and security, his patents reflect a deep understanding of the technological needs of the modern world. As he continues to innovate, his work will likely influence the future of data storage solutions significantly.

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