Company Filing History:
Years Active: 1983-1988
Title: **Innovations of Tatsuo Sakashita: A Pioneer in Tire Composition**
Introduction
Tatsuo Sakashita, an innovative inventor based in Suita, Japan, has made significant contributions to the field of rubber compositions for tires. With a total of four patents, he has demonstrated a strong commitment to advancing tire technology and improving performance. His passion for innovation is evident in his recent developments in tire compositions that prioritize functionality and efficiency.
Latest Patents
One of his latest patents involves compositions for tires consisting of at least 30% star-shaped random styrene-butadiene copolymer obtained through solution polymerization. This composition has a styrene content ranging between 10% and 20%, and a vinyl content of 40% to 50%. Notably, the composition value X of the copolymers falls within the range of 26 to 39, calculated using the specific equation provided in his patent. An important aspect of this composition is its glass transition temperature, which remains below -50 degrees Celsius, while maintaining a loss modulus lower than 1x10^-7 dyn/cm². The ratio of rolling resistance to wet grip achieved in this composition is smaller than 0.82, which is a significant advancement in tire performance.
Another notable patent by Sakashita focuses on the carcass rubber composition for tires. This innovative composition comprises a polymer blend of diene synthetic elastomer and natural rubber, with the diene synthetic elastomer consisting of a star-shaped solution polymerized styrene-butadiene rubber (SBR) in a ratio of 20-50 percent. To enhance the performance, the 1,2 structure in the butadiene unit is maintained at less than 50 percent and the styrene content ideally ranges from 10% to 20%.
Career Highlights
Tatsuo Sakashita has dedicated his career to the Toyo Rubber Industry Co., Ltd., where he has been instrumental in research and development within the tire technology sector. His expertise and innovative mindset have driven the company to explore new frontiers in tire material composition, ensuring that his inventions lead to safer and more efficient products for consumers.
Collaborations
In his journey as an inventor, Sakashita has collaborated with notable colleagues such as Masanori Kan and Takuya Okazaki. These partnerships have fostered a stimulating environment for creativity and progress, enhancing the overall success of the projects they have undertaken together. Their combined knowledge and skills have undoubtedly strengthened the innovations emerging from the Toyo Rubber Industry Co., Ltd.
Conclusion
Tatsuo Sakashita stands out as a prominent inventor in the tire industry, with his patents reflecting a deep understanding of polymer technology and its applications. His innovative contributions to tire compositions, particularly in the areas of performance and material efficiency, have established him as a key figure in advancing tire technology. As he continues to collaborate and push the boundaries of innovation, the impact of his work will likely resonate throughout the industry for years to come.