Location History:
- Tokorozawa, JA (1977)
- Higashi-Kurume, JP (1980)
- Tokorozawa, JP (1980)
- Toride, JP (1986)
Company Filing History:
3 out of 1,037 
1 out of 172 
1 out of 12 Years Active: 1977-1986
Title: The Innovations of Mitsuo Kawashima
Introduction
Mitsuo Kawashima is a notable inventor based in Tokorozawa, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 5 patents. His work has advanced the understanding and application of semiconductor devices, showcasing his expertise and innovative spirit.
Latest Patents
Kawashima's latest patents include a semiconductor device that features a superlattice semiconductor portion. This device comprises a plurality of pairs of superlattice semiconductor thin films designed to create step differences in band edge energy. The thin films are laminated in such a way that the parameters determining their structure change monotonically in the direction of lamination. Electrodes are strategically placed to apply an electric field across both ends of the superlattice semiconductor portion, resulting in a device with excellent negative resistance characteristics and significant design freedom. Another notable patent is a planar semiconductor device that includes a crystalline layer of Ga.sub.x Al.sub.1-x Sb compound semiconductor, which is grown on a GaSb substrate. This device features a narrow energy band gap semiconductor as an active layer, with electrodes formed in a planar configuration.
Career Highlights
Throughout his career, Kawashima has worked with esteemed organizations such as the Agency of Industrial Science and Technology and the Ministry of International Trade and Industry. His experience in these institutions has allowed him to contribute to various advancements in semiconductor technology.
Collaborations
Kawashima has collaborated with notable colleagues, including Shoei Kataoka and Kimihiro Ohta. Their joint efforts have furthered the development of innovative semiconductor solutions.
Conclusion
Mitsuo Kawashima's contributions to semiconductor technology through his patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence advancements in semiconductor devices, showcasing the importance of innovation in technology.