Location History:
- Atsugi, JP (1989 - 1996)
- Ibaraki, JP (2007)
- Yokohama, JP (2013 - 2014)
- Kawasaki, JP (1994 - 2017)
Company Filing History:
21 out of 39,244 
9 out of 1,674 
2 out of 467 
Years Active: 1989-2017
Title: The Innovations and Contributions of Nobuyuki Ohtsuka
Introduction
Nobuyuki Ohtsuka, a prominent inventor based in Kawasaki, Japan, has made significant contributions to the field of semiconductor technology. With an impressive portfolio of 32 patents, Ohtsuka's work has paved the way for advancements in semiconductor devices and manufacturing methods. His latest innovations continue to shape the future of the electronics industry.
Latest Patents
Among Ohtsuka's notable patents is a groundbreaking semiconductor device and its corresponding method of manufacturing. The device features a semiconductor substrate and an oxygen-containing insulating film, alongside a unique structure that includes concave portions and copper-containing films. This innovation enhances the conductive properties of semiconductor devices and involves an electroplating method for copper interconnections, with subsequent heat treatments to optimize performance.
Another significant patent details a comprehensive method for manufacturing semiconductor devices. This method involves forming dual conductivity wells within a silicon substrate, layering high-dielectric-constant insulating films, and employing a dual annealing process to ensure effective element diffusion. The intricacy of these methods reflects Ohtsuka's expertise and foresight in semiconductor technology.
Career Highlights
Nobuyuki Ohtsuka has spent a considerable part of his career at leading companies such as Fujitsu Corporation and Fujitsu Semiconductor Limited. His experience in these organizations allowed him to focus on semiconductor innovation, leading to his prolific patent portfolio. Ohtsuka's work in these firms demonstrates his commitment to advancing technology in the industry.
Collaborations
Throughout his career, Ohtsuka has collaborated with various esteemed colleagues, including Noriyoshi Shimizu and Yoshiyuki Nakao. These partnerships have likely enriched his research and development efforts, fostering a collaborative environment that encourages creative solutions and innovative thinking within semiconductor technology.
Conclusion
Nobuyuki Ohtsuka’s contributions to the semiconductor industry have been transformative, with his 32 patents reflecting a profound understanding of technology and innovation. His work continues to impact the field, influencing the design and functionality of semiconductor devices globally. As the industry evolves, the significance of Ohtsuka's inventions will undoubtedly continue to resonate within the technological landscape.