Location History:
- Kodaira, JP (2000 - 2004)
- Kokubunji, JP (1993 - 2007)
Company Filing History:
5 out of 42,496 
3 out of 3,781 
1 out of 21 Years Active: 1993-2007
Title: **Masahiro Ushiyama: A Pioneer in Semiconductor Innovations**
Introduction:
Masahiro Ushiyama, an esteemed inventor hailing from Kokubunji, Japan, has made significant contributions to the field of semiconductor technology. With a remarkable portfolio of 8 patents, Ushiyama's innovations have revolutionized the manufacturing processes of high-performance and reliable semiconductor devices.
Latest Patents:
Ushiyama’s latest inventions include two groundbreaking patents related to semiconductor integrated circuit devices. The first patent focuses on a semiconductor device employing a silicon nitride film for self-alignment, formed at elevated substrate temperatures by plasma CVD using monosilane and nitrogen gases. This innovative approach suppresses hydrogen release, enhancing the overall performance. The second patent addresses a MOS semiconductor device designed to reduce gate leakage currents while utilizing a thinner gate dielectric film. This invention features a unique process involving the annealing of a silicon nitride film in an oxidizing atmosphere, followed by the complete removal of silicon oxide, optimizing the nitrogen and oxygen concentrations in the gate dielectric film.
Career Highlights:
Ushiyama's professional journey includes impactful positions at notable companies such as Hitachi, Ltd. and Renesas Technology Corporation. His work at these leading organizations has solidified his reputation as a cutting-edge thinker and innovator in the semiconductor industry.
Collaborations:
Throughout his career, Ushiyama collaborated with other talented professionals in the field, including his coworkers Toshiyuki Mine and Jiro Yugami. These collaborations have further enriched his inventions and contributed to advancements in semiconductor technology.
Conclusion:
Masahiro Ushiyama stands out as a key figure in semiconductor innovations. His latest patents reflect his commitment to enhancing device performance and reliability, positioning him as a leading inventor in the fast-evolving technology landscape. With his extensive experience and collaborative spirit, Ushiyama continues to influence the future of semiconductor technology.