Company Filing History:

16 out of 42,485

Hitachi, Ltd.

patents

2 out of 182

Hitachi Vlsi Engineering Corp.

patents

1 out of 6

Hitachi, Vlsi Eng. Corp.

patents

where one patent can have more than one assignee

Years Active: 1981-1992

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5132771 - Semiconductor memory device having flip-flop circuits (1992-07-21),

2. 5126974 - Sense amplifier for a memory device (1992-06-30),

3. 5091325 - Process for making MOS devices for low-temperature operation (1992-02-25),

4. 5088065 - Static type semiconductor memory (1992-02-11),

5. 5021944 - Semiconductor memory having redundancy circuit for relieving defects (1991-06-04),

6. 4891792 - Static type semiconductor memory with multi-stage sense amplifier (1990-01-02),

7. 4841486 - Semiconductor memory device and sense amplifier (1989-06-20),

8. 4797717 - Semiconductor memory device (1989-01-10),

9. 4768076 - Recrystallized CMOS with different crystal planes (1988-08-30),

10. 4747082 - Semiconductor memory with automatic refresh means (1988-05-24),

11. 4710648 - Semiconductor including signal processor and transient detector for low (1987-12-01),

12. 4392158 - Interlaced solid-state imaging device (1983-07-05),

13. 4349743 - Solid-state imaging device (1982-09-14),

14. 4335406 - Solid-state imaging device (1982-06-15),

15. 4274113 - Solid-state imaging device (1981-06-16),

Title: The Innovative Mind of Shoji Hanamura

Introduction

Shoji Hanamura is a notable inventor based in Kokubunji, Japan, with an impressive portfolio of 16 patents. His contributions to the field of semiconductor technology have been significant, particularly in enhancing memory device functionality and efficiency.

Latest Patents

Among his latest patents, Hanamura has developed a semiconductor memory device featuring flip-flop circuits that ensure high performance under various conditions. This semiconductor static random access memory offers enhanced immunity to alpha-ray interference and boasts a high packing density coupled with high-speed operation. Each memory cell integrates a flip-flop circuit with specific pn-junctions designed to improve storage efficiency while maintaining a compact size.

Another notable patent involves a MOS transistor sense amplifier that uses cross-coupled positive feedback to optimize the performance of load circuits in differential amplifiers. It includes an equalizing switch to enhance the functionality of the amplifier during the read cycle, ensuring minimal data delay and lower power consumption effectively.

Career Highlights

Throughout his illustrious career, Hanamura has held pivotal roles in renowned companies such as Hitachi, Ltd. and Hitachi VLSI Engineering Corporation. His work in these organizations has been instrumental in driving forward innovative solutions in memory and semiconductor technology.

Collaborations

Hanamura has collaborated with several distinguished professionals in the field. Notable coworkers include Toshiaki Masuhara and Katsuro Sasaki, with whom he has developed innovative technologies that have contributed to advancements in the semiconductor industry.

Conclusion

Shoji Hanamura’s innovative contributions to semiconductor memory devices reflect a deep commitment to enhancing technology's capabilities. His patents illustrate a progressive approach to design and functionality that continues to impact the industry. As technology advances, Hanamura's work remains a testament to the importance of innovation in driving progress.

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