Location History:
- Ibaragi, JP (1983)
- Tokaimura, JP (1983 - 1984)
- Tokai, JP (1986)
- Ibaraki, JP (1983 - 2016)
Company Filing History:
9 out of 321 
2 out of 481 
1 out of 42,508 
Years Active: 1983-2016
Title: Susumu Shimamoto: Innovator in High Purity Copper Technology
Introduction
Susumu Shimamoto is a prominent inventor based in Ibaraki, Japan, known for his significant contributions to the field of high purity copper technology. With a total of 11 patents to his name, he has made remarkable advancements that enhance the quality and reliability of semiconductor devices.
Latest Patents
Among his latest patents, Shimamoto has developed methods for producing high purity copper through electrolysis. His innovations include high purity copper with a purity of 6N or higher, where the content of harmful components such as phosphorus (P), sulfur (S), oxygen (O), and carbon (C) is reduced to 1 ppm or less. This meticulous control over nonmetal inclusions, which are limited to 10,000 inclusions per gram, significantly reduces the risk of bonding wire rupture and improves the mechanical properties of semiconductor devices. Additionally, he has created high-purity copper sputtering targets that ensure favorable reproducibility in semiconductor wiring, further solidifying his impact on the industry.
Career Highlights
Throughout his career, Shimamoto has worked with esteemed organizations such as the Japan Atomic Energy Research Institute and JX Nippon Mining & Metals Corporation. His work in these institutions has allowed him to refine his expertise in materials science and contribute to groundbreaking innovations in high purity copper applications.
Collaborations
Shimamoto has collaborated with notable colleagues, including Toshinari Ando and Masataka Nishi, to advance research and development in the field of high purity materials. Their combined efforts have led to significant improvements in the manufacturing processes and applications of high purity copper.
Conclusion
Susumu Shimamoto's contributions to high purity copper technology have established him as a leading inventor in the field. His innovative patents and collaborations continue to influence the semiconductor industry, ensuring the development of more reliable and efficient electronic devices.