Location History:
- Kanagawa, JP (2001)
- Kanagawa-ken, JP (1999 - 2002)
- Yokohoma, JP (2003)
- Yokohama, JP (1986 - 2005)
- Fushimi-ku, JP (2006)
Company Filing History:
19 out of 8,893 
1 out of 849 
1 out of 6,656 
Years Active: 1986-2006
Title: **The Innovative Contributions of Yutaka Hayashi**
Introduction
Yutaka Hayashi, an esteemed inventor based in Yokohama, Japan, has made significant strides in the field of ceramics and optical systems. With an impressive portfolio of 20 patents, his work has contributed to advancements in high-performance materials that are crucial in precision industries.
Latest Patents
Among his latest inventions, Hayashi holds patents for a ceramic sintered product and a method for its production. This innovative low thermal expansion ceramic features a cordierite crystal phase and incorporates a crystalline compound containing elements like alkaline earth elements, rare earth elements, gallium, and indium. This ceramic boasts a relative density of at least 95% and a coefficient of thermal expansion not exceeding 1×10⁻⁶ °C from 10 to 40 °C. Additionally, with a Young’s modulus of no less than 130 GPa, the material displays minimal deformation under temperature changes, high rigidity, and exceptional resistance to external forces such as vibration. As such, it is particularly advantageous for use as a support member in wafer handling and optical systems within lithography apparatuses.
Another notable patent relates to an exposure method and apparatus designed to transfer intricate patterns from masks onto substrates. This apparatus features a specialized covering member that effectively isolates predetermined spaces from external gases, significantly enhancing the performance and reliability of exposure processes.
Career Highlights
Hayashi's illustrious career has seen him excel at prestigious companies such as Nikon Corporation and Nippon Kogaku K.K., where he has played a pivotal role in enhancing optical and imaging technologies. His expertise in materials science and engineering has positioned him as a key figure in the development of advanced ceramic products that meet the demands of modern manufacturing processes.
Collaborations
Throughout his career, Hayashi has collaborated with notable professionals, including Keiichi Tanaka and Toshiya Ohtomo. These partnerships have led to groundbreaking innovations and have contributed to advancements in the fields of optics and materials science, further solidifying his status as a leading inventor.
Conclusion
Yutaka Hayashi's contributions to innovations in ceramics and optical systems are remarkable. His patents not only illustrate his expertise but also his commitment to advancing technology in critical industries. As his work continues to influence modern manufacturing, Hayashi remains a prominent figure in the realm of invention and innovation.