Location History:
- Mino, JP (1994)
- Moriguchi, JP (1996)
- Osaka, JP (2003)
- Oizumi-machi, JP (2003 - 2004)
- Gunma, JP (2004 - 2008)
Company Filing History:
9 out of 8,776 
1 out of 2 Years Active: 1994-2008
Title: **Innovations of Shigeyuki Murai: A Pioneer in Semiconductor Technology**
Introduction
Shigeyuki Murai, an accomplished inventor based in Gunma, Japan, has made significant contributions to the field of semiconductor technology. With a portfolio of 9 patents, his inventions address critical challenges in the semiconductor industry, particularly regarding the stability and efficiency of semiconductor devices.
Latest Patents
Murai's latest patents include innovative solutions aimed at enhancing semiconductor device performance. One notable invention focuses on a semiconductor device that addresses a common issue in conventional designs—the distortion of the depletion layer in the guard ring region. In this invention, Murai proposes a method of forming a thermal oxide film in both the operational and guard ring regions during the same process. By carefully controlling the film thickness of the thermal oxide film, desired withstand voltage characteristics are achieved.
Another significant patent pertains to a semiconductor device designed for excellent high-frequency performance. This invention introduces a trench for emitter diffusion within the base region, effectively reducing base resistance and base-emitter capacitance. By optimizing the design with a tapered trench and ensuring that the base electrode layer contacts the entire surface of the base region, Murai has enabled the development of transistors that excel in high-frequency applications.
Career Highlights
Throughout his career, Shigeyuki Murai has worked with prominent companies in the electronics sector, including Sanyo Electric Co., Ltd. and Gifu Sanyo Electronics Co., Ltd. His experience at these institutions has undoubtedly influenced his innovative thinking and led to significant advancements in semiconductor technology.
Collaborations
Murai has collaborated with several talented individuals in his field, notably with coworkers Hisaaki Tominaga and Tetsuro Asano. Their joint efforts in semiconductor innovation have contributed to the success of numerous patents and the advancement of high-performance electronic devices.
Conclusion
Shigeyuki Murai's contributions to semiconductor technology demonstrate his commitment to innovation and improvement within the industry. His latest patents reflect a deep understanding of the complexities of semiconductor devices and highlight his ability to provide effective solutions for ongoing challenges. As the field continues to evolve, Murai's work stands as a testament to the importance of innovation in technology advancement.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.