Location History:
- Yamanashi, JA (1976)
- Kokubunji-Shi Tokyo, JP (2002)
- Kokubunji-shi, Tokyo, JP (2002 - 2009)
- Kokubunji, JP (1985 - 2012)
Company Filing History:
5 out of 4,979 
5 out of 8,782 
5 out of 52,766 
Years Active: 1976-2012
Title: The Innovations of Tamotsu Usami
Introduction
Tamotsu Usami is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 16 patents. His work focuses on enhancing the performance and efficiency of semiconductor devices.
Latest Patents
One of Usami's latest patents is for a high-speed semiconductor device and method for manufacturing the same. This invention discloses a semiconductor device designed to increase the switching speed of a transistor. The device comprises a semiconductor layer formed on part of an insulating layer, a first transistor with a first gate insulating film, a first gate electrode, and two first impurity layers forming a source and a drain. Additionally, a second transistor is formed on another lateral face of the semiconductor layer, featuring a second gate insulating film, a second gate electrode, and two second impurity layers forming a source and a drain. Another notable patent is for a method of manufacturing a wiring substrate with terminated buses. This method involves providing a terminal resistor at the end of a bus on a wiring substrate, along with an insulator that has a large dielectric loss angle to absorb high-frequency electromagnetic waves. This arrangement allows for the successful transmission of digital signals in the GHz region using a conventional terminal resistor.
Career Highlights
Throughout his career, Usami has worked with various companies, including Oki Electric Industry Co., Ltd. His innovative work has positioned him as a key figure in the semiconductor industry, contributing to advancements that have a lasting impact on technology.
Collaborations
Usami has collaborated with notable individuals in his field, including Kanji Otsuka. These collaborations have further enriched his work and expanded the scope of his inventions.
Conclusion
Tamotsu Usami's contributions to semiconductor technology through his patents and collaborations highlight his role as a leading inventor. His innovative approaches continue to influence the industry and pave the way for future advancements.