Location History:
- Kokubungi, JP (1994)
- Hamura, JP (2003 - 2004)
- Kokubunji, JP (1991 - 2006)
- Hitachinaka, JP (2007 - 2009)
- Tokyo, JP (2008 - 2012)
Company Filing History:
16 out of 42,485 
8 out of 3,781 
2 out of 87 
Years Active: 1991-2012
Title: Innovator Profile: Keiichi Yoshizumi
Introduction
Keiichi Yoshizumi is a notable inventor based in Tokyo, Japan, recognized for his significant contributions to the field of semiconductor technology. With a remarkable portfolio that includes 25 patents to his name, Yoshizumi has made strides that enhance the efficiency and performance of semiconductor devices.
Latest Patents
Among his latest innovations is a patent for a semiconductor device and a method of manufacturing the same. This innovative semiconductor device is designed to eliminate the need for a larger chip area, even with the existence of a dummy active region. It improves the surface flatness of the semiconductor substrate, which is crucial for the reliability of electronic components. The manufacturing process involves creating a thick gate insulating film for a high-voltage Metal-Insulator-Semiconductor Field-Effect Transistor (MISFET) over an n-type buried layer serving as an active region. Notably, a resistance element is formed over this gate insulating film, reducing the coupling capacitance between the substrate and the resistance element, thus enhancing overall performance.
Career Highlights
Keiichi Yoshizumi has had a distinguished career at several influential technology companies, including Hitachi, Ltd. and Renesas Technology Corporation. His work has consistently focused on advancing semiconductor technologies, contributing to the development of more efficient and compact electronic components.
Collaborations
Throughout his career, Yoshizumi has collaborated with esteemed colleagues, including Hisayuki Kato and Kazufumi Suenaga. Together, they have shared insights and expertise, driving innovation in semiconductor research and applications.
Conclusion
Keiichi Yoshizumi exemplifies the spirit of innovation in the semiconductor industry. His extensive patent portfolio highlights his commitment to advancing technology and improving electronic device performance. As he continues to work and innovate, his contributions will undoubtedly leave a lasting impact on the field.
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.