Location History:
- Urawa, JP (1984)
- Tokyo, JP (1990 - 2010)
- Kitaadachi-gun, JP (2011 - 2020)
Company Filing History:
25 out of 630 
17 out of 772 
2 out of 24 
Years Active: 1984-2020
Areas of Expertise:
Title: Kiyofumi Takeuchi: Innovator in Liquid Crystal Technology
Introduction
Kiyofumi Takeuchi is an accomplished inventor based in Kita-adachi-gun, Japan, with a remarkable portfolio of 43 patents. His work is particularly significant in the field of liquid crystal compositions, which play a crucial role in modern display technology.
Latest Patents
Among his latest innovations, Takeuchi has developed a nematic liquid crystal composition designed for use in liquid crystal display devices. This composition is characterized by a positive dielectric anisotropy and a low viscosity, ensuring that display defects are minimized. Notably, it maintains the refractive index anisotropy and the nematic phase-isotropic liquid phase transition temperature without significant alterations. By incorporating specific compounds represented by general formulas (LC0) to (LC5), the liquid crystal composition promises reliable performance, particularly at high temperatures, while maintaining a high voltage-holding ratio. This enhances the practicality and response time of liquid crystal display devices, making them highly effective in various applications.
Career Highlights
Throughout his career, Kiyofumi Takeuchi has contributed significantly to the field of liquid crystal technology. His notable work has been associated with leading companies including Dainippon Ink and Chemicals and Dic Corporation. These experiences have enabled him to refine his inventions and develop advanced materials that are essential for next-generation display devices.
Collaborations
Takeuchi has worked alongside esteemed colleagues, such as Haruyoshi Takatsu and Masakazu Kaneoya. Their collaborative efforts have fueled innovations that have pushed the boundaries of what is achievable in liquid crystal technology, ensuring that their developments meet the ever-evolving demands of the industry.
Conclusion
Kiyofumi Takeuchi's contributions to the field of liquid crystals, underscored by his extensive patent portfolio, highlight his instrumental role in advancing display technology. His innovations not only promise improved performance for liquid crystal display devices but also pave the way for future advancements in the field. As he continues to innovate, Kiyofumi Takeuchi remains a key figure in the landscape of liquid crystal research and development.