Company Filing History:
2 out of 197 
2 out of 21,351 
Years Active: 1985-1988
Title: The Innovations of Ryusuke Kawanaka
Introduction
Ryusuke Kawanaka is a notable inventor based in Toyonaka, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on developing alternatives to traditional materials used in semiconductor bonding.
Latest Patents
One of Kawanaka's latest patents is for a wire designed for bonding semiconductor devices. This invention presents an inexpensive, very fine wire made of high-purity copper as an alternative to the fine gold wire currently used in the industry. The wire is produced from a copper ingot with minimal impurities, ensuring high performance. By applying appropriate heat treatment, the wire achieves an elongation of 5-22%, a breaking strength of 14-33 kg/mm², and a Vickers hardness of 38-50. This innovation allows for the production of very fine wires that can be used in semiconductor bonding without issues such as abnormally shaped loops or wire breakage.
Another patent involves lead alloy soft solder containing radioactive particles, showcasing Kawanaka's diverse expertise in materials used in electronic applications.
Career Highlights
Throughout his career, Kawanaka has worked with prominent companies, including Mitsubishi Kinzoku and Mitsubishi Electric. His experience in these organizations has contributed to his understanding of the semiconductor industry and the development of innovative solutions.
Collaborations
Kawanaka has collaborated with notable coworkers such as Naoyuki Hosoda and Naoki Uchiyama. Their combined expertise has likely fostered a creative environment that encourages innovation.
Conclusion
Ryusuke Kawanaka's contributions to semiconductor technology through his patents and collaborations highlight his role as a significant inventor in the field. His innovative approaches continue to influence the industry and pave the way for future advancements.