Location History:
- Ichihara, JP (1990 - 1992)
- Chiba, JP (1992)
- Kimitsu, JP (1994)
- Sodegaura, JP (1993 - 1999)
Company Filing History:
12 out of 1,008 
1 out of 1,788 Years Active: 1990-1999
Title: Tooru Yamanaka: Innovator in Thin-Film Electroluminescent Devices
Introduction
Tooru Yamanaka is a prominent inventor based in Sodegaura, Japan. He has made significant contributions to the field of electroluminescent devices, holding a total of 13 patents. His work has paved the way for advancements in liquid crystal materials and thin-film technologies.
Latest Patents
Yamanaka's latest patents include a thin-film electroluminescent device that features a thin film of a polyoxadiazole derivative. This innovative device comprises a formula where each of X₀ and Y₀ independently represents a divalent organic group, which may include a silicon atom, with n being an integer of 2 or greater. Another notable patent involves carboxylate compounds and liquid crystal materials. This invention provides a carboxylic acid compound that leads to a liquid crystal material and a liquid crystal element, offering advantages such as low operating temperature, high-speed switching, minimal electric power consumption, and high-stable contrast.
Career Highlights
Throughout his career, Yamanaka has worked with notable companies, including Mitsui Petrochemical Industries, Ltd. and Mitsui Chemicals, Inc. His expertise in the field has allowed him to contribute to various innovative projects and technologies.
Collaborations
Yamanaka has collaborated with esteemed colleagues such as Shinichi Nishiyama and Hideo Hama. These partnerships have further enhanced his research and development efforts in the field of electroluminescent devices.
Conclusion
Tooru Yamanaka's contributions to the field of thin-film electroluminescent devices and liquid crystal materials highlight his innovative spirit and dedication to advancing technology. His patents and collaborations reflect a commitment to excellence in research and development.