Company Filing History:

26 out of 42,496

Hitachi, Ltd.

patents

6 out of 217

Hitachi Device Engineering Co., Ltd.

patents

3 out of 3,781

Renesas Technology Corp.

patents

where one patent can have more than one assignee

Years Active: 1979-2006

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29 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7123534 - Semiconductor memory device having short refresh time (2006-10-17),

2. 6864559 - Semiconductor memory device (2005-03-08),

3. 6740958 - Semiconductor memory device (2004-05-25),

4. 6208010 - Semiconductor memory device (2001-03-27),

5. 5497023 - Semiconductor memory device having separately biased wells for isolation (1996-03-05),

6. 5448527 - Decoder and driver for use in a semiconductor memory (1995-09-05),

7. 5398201 - Bit-line drive circuit for a semiconductor memory (1995-03-14),

8. 5386135 - Semiconductor CMOS memory device with separately biased wells (1995-01-31),

9. 5324982 - Semiconductor memory device having bipolar transistor and structure to (1994-06-28),

10. 5255225 - Semiconductor integrated circuit device and memory consisting of (1993-10-19),

11. 5163022 - Semiconductor cell memory with current sensing (1992-11-10),

12. 5148255 - Semiconductor memory device (1992-09-15),

13. 5086414 - Semiconductor device having latch means (1992-02-04),

14. 4986666 - Semiconductor memory device (1991-01-22),

15. 4958320 - Radiation resistant bipolar memory (1990-09-18),

Title: Innovations by Noriyuki Homma in Semiconductor Technology

Introduction

Noriyuki Homma, a prolific inventor based in Kodaira, Japan, has made significant contributions to the field of semiconductor technology. With a remarkable portfolio of 29 patents, his work has greatly influenced the design and functionality of semiconductor memory devices.

Latest Patents

Homma's latest patents demonstrate his innovative approach to enhancing semiconductor memory devices. One such patent is for a semiconductor memory device with a shortened refresh time, which includes a control unit capable of selecting a second word line during specific cycles for efficient memory cell operation. Additionally, he has developed a semiconductor device designed to prevent the invasion of minority carriers from the substrate into the device components, effectively improving data integrity and device reliability. This invention encompasses various structures, including memory arrays and peripheral circuits, with advanced features such as buried layers that shield against unwanted carrier penetration.

Career Highlights

Throughout his career, Homma has worked with leading organizations, including Hitachi, Ltd. and Hitachi Device Engineering Co., Ltd. His work with these companies has allowed him to pave the way for significant advancements in semiconductor technology, particularly in memory devices.

Collaborations

Homma's journey in the field is marked by collaborations with esteemed colleagues such as Hisayuki Higuchi and Goro Kitsukawa. Their collective expertise has led to the development of groundbreaking technologies that continue to impact the semiconductor industry.

Conclusion

Noriyuki Homma's innovative spirit and dedicated research have positioned him as a key figure in the realm of semiconductor technology. With his extensive patent portfolio and collaborations with notable professionals, he has significantly contributed to advancements in memory devices, setting the stage for future innovations in the industry.

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