Location History:
- Gifu-ken, JP (1998 - 2002)
- Yohroh-gun, JP (2010)
- Yoro-gun, JP (1999 - 2012)
- Gifu, JP (2007 - 2013)
- Yoro-cho, JP (2014)
Company Filing History:
15 out of 8,781 
5 out of 306 
2 out of 3,593 
Years Active: 1998-2014
Title: Sadao Yoshikawa: A Pioneer in Memory Device Innovations
Introduction
Sadao Yoshikawa, an esteemed inventor from Gifu, Japan, has made significant contributions to the field of memory devices, holding a remarkable 18 patents. His innovative work primarily revolves around enhancing data read-out rates and improving the reliability of EEPROM circuits, demonstrating his expertise in the realm of semiconductor technology.
Latest Patents
Among his latest patents, one notable invention is a memory device designed to increase the data read-out rate while minimizing circuit size. This invention utilizes a serial interface that employs a memory cell array, along with row and column address decoders, to effectively synchronize address signals with a clock input. Furthermore, Yoshikawa's developments include sophisticated sense amplifiers tailored for each bit of data, enhancing data retrieval accuracy.
Another significant patent addresses a reset circuit for high voltage operations. This innovation safeguards the reset transistor from deterioration during power-down scenarios that occur during programming or erasing operations. By implementing a system that relies on both a power-on reset signal and a low-voltage detection signal, Yoshikawa has successfully ensured the stability of high voltage circuits, preserving the integrity of critical transistors during operations.
Career Highlights
Throughout his career, Sadao Yoshikawa has worked with prominent companies such as Sanyo Electric Co., Ltd. and Sanyo Semiconductor Co., Ltd. His tenure at these organizations has been marked by a commitment to advancing technology and innovation in the semiconductor industry.
Collaborations
Yoshikawa has collaborated with notable coworkers including Toshiki Rai and Yasuhiro Kobayashi. Their collective efforts have contributed to the successful development of groundbreaking technologies within the field, enhancing the capabilities and performance of memory devices.
Conclusion
Sadao Yoshikawa stands as a pivotal figure in the realm of memory device innovation. With his impressive portfolio of patents and significant contributions to the semiconductor industry, he continues to influence the landscape of technology. His work not only exemplifies technical proficiency but also a dedication to advancing the capabilities of electronic components for future generations.