Yasushi Oka

Title: The Innovations of Yasushi Oka

Introduction

Yasushi Oka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 12 patents. His work focuses on enhancing the efficiency and functionality of semiconductor devices, particularly in nonvolatile memory applications.

Latest Patents

One of Yasushi Oka's latest patents involves a semiconductor device where p-type wells are provided within an n-type embedded well of a semiconductor substrate. This design is specifically aimed at forming flash memory while ensuring that the wells are isolated from one another. The device includes a capacitance section, a data write/erase charge injection/discharge section, and a data read MIS-FET, all strategically placed within the p-type wells. Another notable patent addresses the reduction of chip area in semiconductor devices that include nonvolatile memory. This innovation features a first and second memory cell arranged adjacent to each other on the substrate's principal surface, with active regions that are electrically isolated from one another.

Career Highlights

Yasushi Oka has worked with notable companies in the semiconductor industry, including Renesas Technology Corporation and Renesas Electronics Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.

Collaborations

Throughout his career, Yasushi Oka has collaborated with esteemed colleagues such as Kazuyoshi Shiba and Yasuhiro Taniguchi. These partnerships have contributed to the advancement of his projects and the successful development of his patents.

Conclusion

Yasushi Oka's contributions to semiconductor technology have made a significant impact in the industry. His innovative patents and collaborations highlight his expertise and dedication to advancing technology in this field.