Company Filing History:
2 out of 218 
1 out of 1 Years Active: 1990-1992
Title: **Innovative Contributions of Tokuzo Sukegawa in Crystal Growth and Light Emitting Technology**
Introduction
Tokuzo Sukegawa, an accomplished inventor from Hamamatsu, Japan, has made significant strides in the fields of crystal growth and light-emitting elements. With a portfolio of two patents, his work has particularly focused on enhancing the quality and efficiency of semiconductor devices.
Latest Patents
Sukegawa's latest patents demonstrate his innovative capabilities. The first patent, titled **Inorganic Article for Crystal Growth and Liquid-Phase Epitaxy Apparatus**, introduces an inorganic article designed to serve as a container for solutions used in crystal growth. This invention fills the pores of a substrate with an inorganic material that can withstand melting points between 400°C to 900°C. The associated liquid-phase epitaxy apparatus comprises a crucible made from the inorganic article or materials like P-BN, quartz, and sapphire, organized to minimize sliding contact. This design effectively prevents the dispersion of diffusive elements in the solution during epitaxial growth, resulting in high-quality crystals with fewer structural defects.
The second patent, **Material for Light Emitting Element and Method for Crystal Growth Thereof**, outlines a superior material intended for use in light-emitting diodes (LEDs) and laser diodes. This invention features a two-layered structure composed of a GaAs substrate and a Sn-doped InGaP layer, developed without a gradient layer between the two. The method facilitates the direct development of InGaP crystals on the GaAs substrate, thus ensuring proper coordination of lattice constants, a crucial factor for optimal performance in electronic applications.
Career Highlights
Throughout his career, Tokuzo Sukegawa has been affiliated with prominent companies, including Mitsubishi Cable Industries, Ltd. This experience has undoubtedly contributed to his innovative outlook and technical expertise in semiconductor technology.
Collaborations
Sukegawa has worked alongside notable colleagues, such as Kazuyuki Tadatomo and Shinichi Watabe. Their collaborations have played a critical role in the advancement of research in the semiconductor domain, facilitating the development of groundbreaking technologies.
Conclusion
In summary, Tokuzo Sukegawa’s contributions to innovations in crystal growth and light-emitting technology are noteworthy. His patents not only enhance the understanding of semiconductor materials but also pave the way for advancements in devices that rely on efficient crystal structures. As technology continues to evolve, the impacts of his work will likely resonate within the industry for years to come.