Company Filing History:
1 out of 6 
1 out of 39 
1 out of 1,838 Years Active: 1978
Title: The Innovative Contributions of Tadashi Yatomi
Introduction
Tadashi Yatomi is a notable inventor based in Yokohama, Japan. He is recognized for his significant contributions to the field of flexible urethane foams. His innovative approach has led to advancements in manufacturing processes that enhance the quality and resilience of these materials.
Latest Patents
Tadashi Yatomi holds a patent for a "Process for manufacturing high-resilient flexible urethane foams." This process is characterized by the reaction and foaming of polyalkylene ether polyol and an organic polyisocyanate in the presence of a blowing agent, surfactant, and catalyst. The polyalkylene ether polyol used contains 2 to 10% by weight of a vinyl type polymer, with a hydroxyl number ranging from 25 to 60 mg KOH/g. Notably, 20 to 70 mol% of its hydroxyl groups are primary hydroxyl groups, while the remaining are secondary hydroxyl groups. The organic polyisocyanate is a mixture of tolylene diisocyanate with diphenylmethane diisocyanate or a crude diphenylmethane diisocyanate. The surfactant used is a mixture of a high-molecular-weight siloxane-oxyalkylene copolymer with a low-molecular-weight siloxane-oxyalkylene copolymer. This patent showcases his expertise in creating advanced materials.
Career Highlights
Throughout his career, Tadashi Yatomi has worked with prominent companies such as Mitsui-Nisso Corporation and Nippon Unicar Company Limited. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in the field of materials science.
Collaborations
Tadashi Yatomi has collaborated with notable individuals in his field, including Kiyoshi Matsubara and Yuichi Nomura. These collaborations have further enriched his work and contributed to the development of innovative solutions in flexible urethane foams.
Conclusion
Tadashi Yatomi's contributions to the field of flexible urethane foams through his innovative patent and career achievements highlight his role as a significant inventor. His work continues to influence advancements in material manufacturing processes.