Location History:
- Himeji, JP (1993)
- Shizuoka, JP (1995 - 1998)
- Hyogo, JP (1992 - 2002)
- Naka-gun, JP (2002)
Company Filing History:
3 out of 1,165 
1 out of 507 
1 out of 348 Years Active: 1992-2002
Title: Inventor Yasushi Maeda: Innovations in Silicon Substrates and Alloy Sheets
Introduction
Yasushi Maeda is a notable inventor based in Hyogo, Japan, known for his contributions to materials science and engineering. With a portfolio of nine patents, he has made significant advancements, particularly in the fields of silicon substrates and aluminum-magnesium alloy sheets.
Latest Patents
One of Yasushi Maeda's latest patents involves the preparation of silicon substrates. This innovation details the process of creating a silicon substrate that has a distinct step of at least 5 micrometers on one surface. By utilizing high-pressure heat oxidation, an oxide film is formed that is thinner than this step. The process culminates in removing the oxide film from the higher surface region, exposing the silicon surface while maintaining the film on the lower region. This innovation boasts excellent electrical properties, minimized warpage, a uniform oxygen concentration, and a clearly defined oxide-silicon boundary, making it highly suitable for optical waveguide devices.
Another remarkable patent from Maeda is for an aluminum-magnesium based alloy sheet characterized by its impressive press formability. The sheet demonstrates a unique crystallographic texture, with a ratio of S orientation grains to CUBE orientation grains of 1 or more. Additionally, the sheet contains a minimal volume fraction of GOSS orientation grains and features a grain size between 20 and 100 micrometers, which further enhances its formability.
Career Highlights
Throughout his career, Yasushi Maeda has contributed his expertise to various institutions, including Daicel Chemical Industries, Ltd. His work in these companies has played a crucial role in advancing material technology solutions in Japan and beyond.
Collaborations
Yasushi has collaborated with esteemed colleagues such as Hitoshi Tsugaya and Frederic Barlat. These partnerships have led to enhanced research outcomes and the successful development of innovative materials in their respective fields.
Conclusion
Yasushi Maeda exemplifies the spirit of innovation and dedication in the realm of materials science. His patented inventions in silicon substrates and aluminum-magnesium alloys demonstrate significant contributions that have endless applications in technology and engineering. As the industry continues to evolve, Maeda's work remains integral in paving the way for future advancements.