Location History:
- Hitachi, JP (2005 - 2008)
- Anan, JP (2012)
Company Filing History:
Years Active: 2005-2012
Title: Yuuichi Sawai: Innovator in Wiring and Optical Information Technologies
Introduction
Yuuichi Sawai is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the fields of wiring members and optical information recording technologies. With a total of 3 patents to his name, Sawai continues to push the boundaries of innovation in his industry.
Latest Patents
Sawai's latest patents include a wiring member and a method of manufacturing the wiring member, as well as an optical information recording medium. The wiring member comprises a substrate and a copper wiring layer with an electrical resistivity of not larger than 4×10⁻⁹ Ωcm in contact with the substrate. It also features an aluminum diffusion layer with a descending aluminum concentration gradient and an aluminum oxide layer covering the diffusion layer. The ratio of the thickness of the copper wiring layer to the aluminum diffusion layer is maintained between 1.5 to 5.
In addition, his patent for the optical information recording medium includes a reflecting layer, an optical information recording layer, a super-resolution layer, and a protective layer. The super-resolution layer is designed to change its optical constant nonlinearly due to a red shift of its band gap. This layer is made from a solid solution, compound, or mixture of metal oxides containing multiple types of metal ions of the same valence.
Career Highlights
Yuuichi Sawai has built a successful career at Hitachi, Ltd., where he has been instrumental in developing advanced technologies. His work has not only contributed to the company's reputation but has also advanced the field of electronics significantly.
Collaborations
Sawai has collaborated with notable coworkers, including Hiroki Yamamoto and Hideto Momose. Their combined expertise has fostered innovation and led to the successful development of various technologies.
Conclusion
Yuuichi Sawai is a distinguished inventor whose work in wiring and optical information technologies has made a lasting impact. His innovative patents and collaborations continue to shape the future of technology in significant ways.