Company Filing History:

12 out of 42,488

Hitachi, Ltd.

patents

2 out of 3,781

Renesas Technology Corp.

patents

1 out of 88

Hitachi Electronics Engineering Co., Ltd.

where one patent can have more than one assignee

Years Active: 1987-2011

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7911769 - Electronic circuit structure, power supply apparatus, power supply system, and electronic apparatus (2011-03-22),

2. 7548411 - Electronic circuit structure, power supply apparatus, power supply system, and electronic apparatus (2009-06-16),

3. 7372683 - Over voltage detection circuit, and power source circuit, power supply system and electronic apparatus using the over voltage detection circuit (2008-05-13),

4. 7355829 - Overvoltage protection circuit, and power source, power supply system and electronic apparatus using the overvoltage protection circuit (2008-04-08),

5. 7291909 - BGA type semiconductor device and electronic equipment using the same (2007-11-06),

6. 7208883 - Current detection circuit, and power supply apparatus, power supply system and electronic apparatus using the current detection circuit (2007-04-24),

7. 7164194 - BGA type semiconductor device and electronic equipment using the same (2007-01-16),

8. 6734545 - BGA type semiconductor device and electronic equipment using the same (2004-05-11),

9. 6628010 - Parallel power system and an electronic apparatus using the power system (2003-09-30),

10. 6163071 - BGA type semiconductor device and electronic equipment using the same (2000-12-19),

11. 5844762 - Electronic circuit device having a function of inhibiting resonance in (1998-12-01),

12. 5293005 - Electronic device having high-density wiring (1994-03-08),

13. 5281151 - Semiconductor chip carrier, module having same chip carrier mounted (1994-01-25),

14. 4710654 - Delay circuit including an improved CR integrator circuit (1987-12-01),

Title: Innovations of Hideho Yamamura

Introduction

Hideho Yamamura is a prominent inventor known for his significant contributions to electronic circuit structures and power supply systems. He is based in Oiso, Japan, and holds a total of 14 patents. His work focuses on enhancing the efficiency and reliability of power supply apparatuses.

Latest Patents

Yamamura's latest patents include innovations in electronic circuit structures, power supply apparatuses, power supply systems, and electronic apparatuses. These inventions aim to prevent the deterioration of efficiency in power supply systems due to semiconductor voltage drops. They also address issues related to wasted power and erroneous operations caused by feeder wire voltage drops. His designs feature a mounting structure for electronic circuits that utilizes multiple busbars as current paths on printed circuit boards. The busbars are arranged in almost parallel portions, spaced at predetermined distances, ensuring optimal performance. Additionally, his switching power supply apparatus is designed to operate with an output voltage of less than 2 V and an output current exceeding 100 A, achieving power efficiency greater than 70%.

Career Highlights

Throughout his career, Hideho Yamamura has worked with notable companies such as Hitachi, Ltd. and Renesas Technology Corporation. His experience in these organizations has contributed to his expertise in the field of electronic engineering and innovation.

Collaborations

Yamamura has collaborated with several professionals in his field, including Naoki Maru and Koji Nisisu. These collaborations have likely enriched his work and led to further advancements in his inventions.

Conclusion

Hideho Yamamura's contributions to electronic circuit structures and power supply systems demonstrate his commitment to innovation and efficiency. His patents reflect a deep understanding of the challenges in power supply technology and offer solutions that enhance performance and reliability.

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