Average Co-Inventor Count = 4.5

ph-index = 10

Forward Citations = 224(Granted Patents)

Location History:

Hachiouji, JP (1991)
Hachioji, JP (1987 - 1995)
Sagamihara, JP (1993 - 2010)

Company Filing History:

Renesas Technology Corp.

patents

9 out of 217

Hitachi Device Engineering Co., Ltd.

patents

4. 5 out of 336

Hitachi Ulsi Systems Co., Ltd.

patents

5. 9 out of 832,680

Other

patents

where one patent can have more than one assignee

Years Active: 1987-2010

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36 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 7685455 - Semiconductor integrated circuit which generates internal clock signal for fetching input data synchronously with the internal clock signal without decrease of timing margin (2010-03-23),

2. 7426152 - Semiconductor memory device and semiconductor device (2008-09-16),

3. 7296173 - Semiconductor integrated circuit (2007-11-13),

4. 7269086 - Semiconductor memory device and semiconductor device (2007-09-11),

5. 7233045 - Semiconductor device and system (2007-06-19),

6. 7164592 - Semiconductor device (2007-01-16),

7. 7123534 - Semiconductor memory device having short refresh time (2006-10-17),

8. 6998878 - Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuit (2006-02-14),

9. 6954401 - Semiconductor memory device integrating source-coupled-logic (SCL) circuit into an address buffer and a decoder (2005-10-11),

10. 6876573 - Semiconductor memory device (2005-04-05),

11. 6842394 - Semiconductor device using SCL circuit (2005-01-11),

12. 6807115 - Method of testing a semiconductor integrated device (2004-10-19),

13. 6806516 - Semiconductor device and system (2004-10-19),

14. 6791895 - Semiconductor memory device (2004-09-14),

15. 6677782 - Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuit (2004-01-13),

Title: Hiroaki Nambu - Innovator in Semiconductor Technology

Introduction

Hiroaki Nambu is a prominent inventor based in Sagamihara, Japan, known for his contributions to semiconductor technology. With a total of 36 patents to his name, he has significantly advanced the field by developing innovative semiconductor circuits that enhance performance and efficiency.

Latest Patents

Hiroaki Nambu's latest patents include groundbreaking inventions in semiconductor integrated circuits. One notable patent describes a semiconductor integrated circuit that generates an internal clock signal for fetching input data synchronously. This technology ensures that the timing margin is preserved even when the duty ratio of a clock signal deviates from 50%. The circuit features a clock input terminal for the clock signal, a data input terminal for the data signal, internal clock generating circuits, and a latch circuit that synchronizes the data signal to the internal clock.

Another significant patent involves a semiconductor memory device designed to improve yield by trimming the internal properties of a semiconductor device. This invention incorporates an internal voltage step-down circuit and an internal voltage step-up circuit that are adjustable, along with a fuse circuit unit and a JTAG function unit to optimize performance through logical operations.

Career Highlights

Throughout his career, Hiroaki Nambu has worked with esteemed companies such as Hitachi, Ltd. and Renesas Technology Corporation. His tenure at these organizations has allowed him to hone his expertise and lead innovative projects in semiconductor technology.

Collaborations

Nambu's work has often involved collaboration with fellow innovators. Notable coworkers include Kazuo Kanetani and Takeshi Kusunoki, with whom he has worked closely on various projects that have contributed to his impressive portfolio of patents.

Conclusion

Hiroaki Nambu's contributions to semiconductor technology have solidified his reputation as a leading inventor in the field. His latest innovations demonstrate a commitment to enhancing the performance and reliability of semiconductor devices, marking him as a significant figure in the ongoing advancements within this technology sector.

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