Company Filing History:

12 out of 39,228

Fujitsu Corporation

patents

1 out of 1,674

Fujitsu Semiconductor Limited

patents

Years Active: 2001-2012

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8111575 - Semiconductor device (2012-02-07),

2. 7471585 - Semiconductor memory (2008-12-30),

3. 7114025 - Semiconductor memory having test function for refresh operation (2006-09-26),

4. 7113441 - Semiconductor memory (2006-09-26),

5. 6735141 - Semiconductor memory device having an SRAM and a DRAM on a single chip (2004-05-11),

6. 6724675 - Semiconductor memory device and electronic apparatus (2004-04-20),

7. 6535950 - Semiconductor memory device having a refresh operation (2003-03-18),

8. 6496433 - Semiconductor device and semiconductor device testing method (2002-12-17),

9. 6452453 - Constant-current generator, differential amplifier, and semiconductor integrated circuit (2002-09-17),

10. 6404688 - Semiconductor memory device having a self-refresh operation (2002-06-11),

11. 6396758 - Semiconductor memory device (2002-05-28),

12. 6353561 - Semiconductor integrated circuit and method for controlling the same (2002-03-05),

13. 6292426 - Semiconductor memory device having an SRAM and a DRAM on a single chip (2001-09-18),

Title: Akihiro Funyu: Innovator in Semiconductor Technology

Introduction

Akihiro Funyu is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 13 patents. His innovative work has paved the way for advancements in semiconductor devices and memory systems.

Latest Patents

One of Funyu's latest patents involves a semiconductor device that includes a temperature sensor for detecting temperature. This device features an inner circuit that operates when supplied with a power supply voltage from a power supply line. A switch is connected between the power supply line and the inner circuit, with a control circuit that manages the switch's operation based on the temperature detected. If the temperature exceeds a threshold value, the switch is turned on during operation and off during non-operation. Conversely, if the temperature is below the threshold, the switch remains on regardless of the inner circuit's state.

Another notable patent pertains to semiconductor memory. This invention outputs a refresh signal in response to a refresh request generated at predetermined cycles, allowing for a refresh operation that concludes when a conflict arises between an access request and the refresh request. This innovation enables earlier access operations, reducing access time significantly. Additionally, the end time of the refresh operation can be adjusted based on the timing of the access request, further enhancing efficiency. A test circuit is also included to notify the state of the refresh operation externally, allowing for quick evaluation of the operation margin.

Career Highlights

Throughout his career, Akihiro Funyu has worked with notable companies such as Fujitsu Corporation and Fujitsu Semiconductor Limited. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Funyu has collaborated with esteemed colleagues, including Shinya Fujioka and Hitoshi Ikeda. These partnerships have fostered a collaborative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Akihiro Funyu's contributions to semiconductor technology through his numerous patents highlight his role as a leading inventor in the field. His innovative designs and collaborative efforts continue to influence advancements in the industry.

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