Location History:
- Ohme, JP (1990 - 2005)
- Ami, JP (2005)
- Saitama, JP (2006)
- Ome, JP (2006)
- Tokorozawa, JP (1994 - 2018)
Company Filing History:
21 out of 42,496 
11 out of 3,781 
7 out of 182 
Years Active: 1990-2018
Title: Fumio Ootsuka: Innovator in Semiconductor Technology
Introduction
Fumio Ootsuka, based in Tokorozawa, Japan, is a prolific inventor known for his significant contributions to the field of semiconductor technology. With a remarkable portfolio of 36 patents, Ootsuka has pioneered several innovations that enhance the efficiency and functionality of semiconductor devices.
Latest Patents
Among his latest inventions, Ootsuka's patent for a **3D stacked multilayer semiconductor memory using doped select transistor channel** is particularly noteworthy. This innovative technology includes the formation of a lightly boron-doped layer atop a heavily boron-doped layer to create a select transistor. The lightly doped layer acts as the channel, while the heavily doped layer serves as an isolation region, effectively separating the select transistor from memory transistors.
Another significant patent is for a **semiconductor integrated circuit device and method for manufacturing the same**. This device features a system-on-chip structure that combines DRAM and logic integrated circuits. Ootsuka's design incorporates a silicide layer on the surfaces of the source and drain of various MISFETs, except for those of the memory cell selective MISFETs, thereby improving the overall circuit performance.
Career Highlights
Fumio Ootsuka has worked at notable companies, including Hitachi, Ltd. and Renesas Technology Corporation. His career at these organizations has enabled him to develop cutting-edge technologies that have transformed semiconductor applications.
Collaborations
Throughout his career, Ootsuka has collaborated with distinguished colleagues such as Osamu Tsuchiya and Jun Sugiura. These partnerships have enriched his work, leading to groundbreaking advancements in semiconductor technology.
Conclusion
Fumio Ootsuka's innovative spirit and technical expertise have solidified his position as a leading figure in the field of semiconductor research and development. His contributions, encapsulated in his numerous patents, continue to inspire advancements that shape the future of technology globally.